CN106830668B - Circulating water method deslagging process in mineral fiber production process - Google Patents
Circulating water method deslagging process in mineral fiber production process Download PDFInfo
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- CN106830668B CN106830668B CN201710010215.5A CN201710010215A CN106830668B CN 106830668 B CN106830668 B CN 106830668B CN 201710010215 A CN201710010215 A CN 201710010215A CN 106830668 B CN106830668 B CN 106830668B
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- deslagging
- mineral fiber
- circulating water
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- slag
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- 239000002557 mineral fiber Substances 0.000 title claims abstract description 272
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 184
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000008569 process Effects 0.000 title claims abstract description 35
- 238000007380 fibre production Methods 0.000 title claims abstract description 10
- 239000002893 slag Substances 0.000 claims abstract description 167
- 238000001035 drying Methods 0.000 claims abstract description 40
- 238000007654 immersion Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims description 132
- 239000012043 crude product Substances 0.000 claims description 85
- 239000000047 product Substances 0.000 claims description 76
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 46
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 33
- 238000003756 stirring Methods 0.000 claims description 23
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 15
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 230000003472 neutralizing effect Effects 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 150000001263 acyl chlorides Chemical class 0.000 claims description 4
- -1 dodecylamine modified hydroxyapatite Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000005188 flotation Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- ODIGIKRIUKFKHP-UHFFFAOYSA-N (n-propan-2-yloxycarbonylanilino) acetate Chemical compound CC(C)OC(=O)N(OC(C)=O)C1=CC=CC=C1 ODIGIKRIUKFKHP-UHFFFAOYSA-N 0.000 description 1
- 229920002748 Basalt fiber Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 229910052599 brucite Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/10—Non-chemical treatment
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Cosmetics (AREA)
Abstract
A deslagging process by a circulating water method in the production process of mineral fibers comprises the following steps: (1) immersing: immersing mineral fibers into an immersion tank filled with circulating water to obtain a crude mineral fiber product; (2) deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system; (3) collecting: when the slag ball rate of the mineral fiber treated in the step (2) reaches 0.5-2%, extracting the mineral fiber subjected to slag removal in the step (2) by a water pump; (4) and (3) dehydrating: drying the collected mineral fibers. The deslagging process of the circulating water method in the mineral fiber production process of the invention can completely and completely remove impurities in the mineral fibers, can meet the requirement of the market on pure mineral fibers, has obvious deslagging effect compared with the traditional deslagging method, can treat the mineral fibers in a large scale, and is suitable for producing and processing the mineral fibers in a large scale.
Description
Technical Field
The invention relates to the field of fiber material deslagging processes, in particular to a circulating water deslagging process in a mineral fiber production process.
Background
In recent years, with the development of economy, the exploitation of fuels and the generation of a large amount of solid wastes have been carried out. The treatment of solid waste generally refers to a process of converting solid waste into a material suitable for transportation, storage, utilization or disposal by physical, chemical, biological, physical, chemical and biochemical methods, and the purpose of the solid waste treatment is harmlessness, reduction and recycling. Mineral fibers are fibers obtained from mineral rocks of fibrous structure, the main constituent substances being various oxides, such as silica, alumina, magnesia, etc. The mineral fiber is an effective treatment product for solid waste, and can be used for materials such as heat preservation, fire resistance, friction and the like after being processed. During the treatment of mineral fibers, slag balls are generated and residual coarse and short fibers are generated, impurities in the mineral fibers are difficult to treat completely, the slag removal rate is low, and the impurities affect the downstream performance of the mineral fibers, such as refractory materials and the like.
Disclosure of Invention
In order to solve the problems, the invention provides a deslagging process by a circulating water method in the production process of mineral fibers and a preparation method thereof.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a deslagging process by a circulating water method in the production process of mineral fibers comprises the following steps:
(1) immersing: immersing mineral fibers into an immersion tank filled with circulating water to obtain a crude mineral fiber product;
(2) deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system;
(3) collecting: when the slag ball rate of the mineral fiber treated in the step (2) reaches 0.5-2%, extracting the mineral fiber subjected to slag removal in the step (2) by a water pump;
(4) and (3) dehydrating: drying the collected mineral fibers.
As a preferred technical scheme, the deslagging system comprises any one or a combination of two of circulating water deslagging and a deslagging device.
As a preferred technical scheme, the deslagging system comprises a deslagging tank.
As a preferred technical scheme, an air floatation device is arranged at the connecting part of the deslagging groove and the adjacent deslagging groove.
As a preferable technical scheme, a stirring device is arranged in the immersion tank.
As a preferable technical scheme, the stirring speed of the stirring device is 10-40 r/min.
As a preferred technical scheme, the stirring speed of the stirring device is 20-30 r/min.
As a preferred technical scheme, the drying temperature condition is that the initial temperature is 30-40 ℃, the heating rate is 1-4 ℃/min, and the gradient heating is carried out to 50-60 ℃.
The invention provides a mineral fiber prepared by a circulating water method deslagging process in the mineral fiber production process.
The third aspect of the invention provides the application of the mineral fiber in paper industry, thermal insulation materials and refractory materials.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
A deslagging process by a circulating water method in the production process of mineral fibers comprises the following steps:
(1) immersing: immersing mineral fibers into an immersion tank filled with circulating water to obtain a crude mineral fiber product;
(2) deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system;
(3) collecting: when the slag ball rate of the mineral fiber treated in the step (2) reaches 0.5-2%, extracting the mineral fiber subjected to slag removal in the step (2) by a water pump;
(4) and (3) dehydrating: drying the collected mineral fibers.
Mineral fiber:
mineral fibers belong to mineral fibers, and have the advantages of high brittleness, high dimensional stability and difficulty in combination with organic fibers. Common mineral fibers include asbestos fibers, sepiolite, attapulgite, brucite, wollastonite, gypsum fiber basalt fibers, and the like.
In the process of processing mineral fibers, due to various reasons such as incomplete production raw materials and fiber forming, the produced mineral fibers are mixed with impurities such as short fibers and microcrystalline balls, and the impurities have great influence on the quality of fiber products.
Slag ball
The shot according to the invention is defined as the sum of all solid impurities in the mineral fibres.
Slag ball rate:
in the technical scheme, the slag ball rate is that 10g of mineral fiber (without drying treatment) is randomly taken out from a slag removing groove at the tail end in the slag removing process, deionized water is added, the mixture is stirred in a beaker, the slag ball at the bottom of the beaker is directly weighed without drying treatment after the mixture is stirred for 10min, and the slag ball rate is calculated. The shot rate is (shot mass ÷ 10g) × 100%.
A deslagging process by a circulating water method in the production process of mineral fibers comprises the following steps:
(1) immersing: and (3) immersing the mineral fiber into an immersion tank filled with circulating water to obtain a crude mineral fiber product.
As a preferable technical scheme, a stirring device is arranged in the immersion tank. The stirring device aims to break up the mineral fibers and is beneficial to removing impurities in the mineral fibers.
As a preferable technical scheme, the stirring speed of the stirring device is 10-40 r/min.
As a preferred technical scheme, the stirring speed of the stirring device is 20-30 r/min.
(2) Deslagging: and (3) deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system.
As a preferred technical scheme, the deslagging system comprises any one or a combination of two of circulating water deslagging and a deslagging device. As a preferred technical scheme, the deslagging system comprises a deslagging tank.
As a further preferred technical scheme, the deslagging system comprises deslagging for the first time, pushing the mineral fiber crude product in the step (1) into a first deslagging tank through the action of circulating water; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; and deslagging for the third time, namely pushing the mineral fiber coarse product subjected to secondary deslagging into a third deslagging groove under the action of circulating water.
As a further preferred technical scheme, the deslagging system comprises deslagging for the first time, pushing the mineral fiber crude product in the step (1) into a first deslagging tank through the action of circulating water; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; and removing slag for the fourth time, namely pushing the mineral fiber coarse product removed with slag for the third time into a fourth slag removing groove under the action of circulating water.
As a further preferred technical scheme, the deslagging system comprises deslagging for the first time, pushing the mineral fiber crude product in the step (1) into a first deslagging tank through the action of circulating water; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; and fourth deslagging, namely pushing the mineral fiber coarse product subjected to third deslagging to a fourth deslagging groove under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging groove.
As a further preferred technical scheme, the deslagging system comprises deslagging for the first time, pushing the mineral fiber crude product in the step (1) into a first deslagging tank through the action of circulating water; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; and fourth deslagging, namely pushing the mineral fiber coarse product subjected to third deslagging to a fourth deslagging groove under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging groove.
As a further preferred technical scheme, the deslagging system comprises a deslagging system, wherein deslagging is carried out for the first time, the mineral fiber crude product in the step (1) is pushed into a deslagging groove under the action of circulating water, and a deslagging device is arranged in the deslagging groove; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; and fourth deslagging, namely pushing the mineral fiber coarse product subjected to third deslagging to a fourth deslagging groove under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging groove.
As a further preferred technical scheme, the deslagging system comprises a deslagging system, wherein deslagging is carried out for the first time, the mineral fiber crude product in the step (1) is pushed into a deslagging groove under the action of circulating water, and a deslagging device is arranged in the deslagging groove; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; and removing slag for the fifth time, and pushing the mineral fiber coarse product removed with slag for the fourth time into a fifth slag removing groove under the action of circulating water.
As a further preferred technical scheme, the deslagging system comprises a deslagging system, wherein deslagging is carried out for the first time, the mineral fiber crude product in the step (1) is pushed into a deslagging groove under the action of circulating water, and a deslagging device is arranged in the deslagging groove; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; removing slag for the fifth time, and pushing the coarse mineral fiber product removed by the fourth time into a fifth slag removing groove under the action of circulating water; and deslagging for the sixth time, pushing the mineral fiber coarse product subjected to deslagging for the fifth time to a sixth deslagging groove under the action of circulating water, and arranging a deslagging device in the fourth deslagging groove.
As a further preferred technical scheme, the deslagging system comprises a deslagging system, wherein deslagging is carried out for the first time, the mineral fiber crude product in the step (1) is pushed into a deslagging groove under the action of circulating water, and a deslagging device is arranged in the deslagging groove; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; removing slag for the fifth time, and pushing the coarse mineral fiber product removed by the fourth time into a fifth slag removing groove under the action of circulating water; removing slag for the sixth time, pushing the mineral fiber crude product removed from the fifth time into a sixth slag removing groove through the action of circulating water, wherein a slag remover is arranged in the fourth slag removing groove; and removing slag for the seventh time, namely pushing the mineral fiber crude product removed with slag for the sixth time into a seventh slag removing groove under the action of circulating water.
As a further preferred technical scheme, the deslagging system comprises a deslagging system, wherein deslagging is carried out for the first time, the mineral fiber crude product in the step (1) is pushed into a deslagging groove under the action of circulating water, and a deslagging device is arranged in the deslagging groove; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; removing slag for the fifth time, and pushing the coarse mineral fiber product removed by the fourth time into a fifth slag removing groove under the action of circulating water; removing slag for the sixth time, pushing the mineral fiber crude product removed from the fifth time into a sixth slag removing groove through the action of circulating water, wherein a slag remover is arranged in the fourth slag removing groove; removing slag for the seventh time, and pushing the mineral fiber crude product removed with slag for the sixth time into a seventh slag removing groove through the action of circulating water; and (3) deslagging for the eighth time, pushing the mineral fiber coarse product subjected to deslagging for the seventh time to a sixth deslagging groove under the action of circulating water, wherein a deslagging device is arranged in the eighth deslagging groove.
As a further preferred technical scheme, the deslagging system comprises a deslagging system, wherein deslagging is carried out for the first time, the mineral fiber crude product in the step (1) is pushed into a deslagging groove under the action of circulating water, and a deslagging device is arranged in the deslagging groove; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; removing slag for the fifth time, and pushing the coarse mineral fiber product removed by the fourth time into a fifth slag removing groove under the action of circulating water; removing slag for the sixth time, pushing the mineral fiber crude product removed from the fifth time into a sixth slag removing groove through the action of circulating water, wherein a slag remover is arranged in the fourth slag removing groove; removing slag for the seventh time, and pushing the mineral fiber crude product removed with slag for the sixth time into a seventh slag removing groove through the action of circulating water; the eighth deslagging, namely pushing the mineral fiber crude product subjected to the seventh deslagging to a sixth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the eighth deslagging tank; and (4) deslagging for the ninth time, and pushing the coarse mineral fiber product subjected to deslagging for the eighth time into a ninth deslagging groove under the action of circulating water.
As a further preferred technical scheme, the deslagging system comprises a deslagging system, wherein deslagging is carried out for the first time, the mineral fiber crude product in the step (1) is pushed into a deslagging groove under the action of circulating water, and a deslagging device is arranged in the deslagging groove; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; removing slag for the fifth time, and pushing the coarse mineral fiber product removed by the fourth time into a fifth slag removing groove under the action of circulating water; removing slag for the sixth time, pushing the mineral fiber crude product removed from the fifth time into a sixth slag removing groove through the action of circulating water, wherein a slag remover is arranged in the fourth slag removing groove; removing slag for the seventh time, and pushing the mineral fiber crude product removed with slag for the sixth time into a seventh slag removing groove through the action of circulating water; the eighth deslagging, namely pushing the mineral fiber crude product subjected to the seventh deslagging to a sixth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the eighth deslagging tank; the ninth deslagging, namely pushing the coarse mineral fiber product subjected to the eighth deslagging to a sixth deslagging groove under the action of circulating water; and removing the slag for the tenth time, pushing the mineral fiber coarse product removed with the ninth time into a tenth slag removing groove under the action of circulating water, and arranging a slag remover in the tenth slag removing groove.
As a further preferred technical scheme, the deslagging system comprises a deslagging system, wherein deslagging is carried out for the first time, the mineral fiber crude product in the step (1) is pushed into a deslagging groove under the action of circulating water, and a deslagging device is arranged in the deslagging groove; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; removing slag for the fifth time, and pushing the coarse mineral fiber product removed by the fourth time into a fifth slag removing groove under the action of circulating water; deslagging for the sixth time, pushing the mineral fiber coarse product subjected to deslagging for the fifth time into a sixth deslagging groove through the action of circulating water; removing slag for the seventh time, and pushing the mineral fiber crude product removed with slag for the sixth time into a seventh slag removing groove through the action of circulating water; the eighth deslagging, namely pushing the mineral fiber crude product subjected to the seventh deslagging to a sixth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the eighth deslagging tank; the ninth deslagging, namely pushing the coarse mineral fiber product subjected to the eighth deslagging to a sixth deslagging groove under the action of circulating water; and removing slag for the tenth time, and pushing the mineral fiber coarse product removed with slag for the ninth time into a tenth slag removing groove under the action of circulating water.
As a preferred technical scheme, an air floatation device is arranged at the connecting part of the deslagging groove and the adjacent deslagging groove. The air floatation device is characterized in that a dissolved air system generates a large amount of micro bubbles in water, so that air is attached to suspended particles in a highly dispersed micro bubble form, mineral fibers are blown away, and sedimentation of slag balls is facilitated. In the deslagging process, the air flotation device is always opened until deslagging is finished, and the air flotation device is closed when mineral fiber slurry deslagging along with circulating water is finished.
In a preferred embodiment, a deslagging agent is added into the deslagging tank circulating water. The added slag removing agent is nano hydroxyapatite or modified nano hydroxyapatite. The mass ratio of the mineral fiber immersed into the slag removing tank to the slag removing agent added into the slag removing tank is 1: (0.005-0.015). Further preferably, the mass ratio of the mineral fiber slurry to the deslagging agent added into the deslagging tank is 1: (0.008-0.012).
Nano hydroxyapatite
The hydroxyapatite is pure end member (endmember) containing hydroxyl radical in apatite, the crystal system of the hydroxyapatite is hexagonal crystal system, and the hydroxyapatite belongs to L6PC symmetrical sum P63The structure of the space group is a hexagonal cylinder, the specific gravity is 3.08, and the Mohs hardness is 5. Pure hydroxyapatite powder is white, but natural hydroxyapatite is intercalated with brown, yellow or green color.
The hydroxyapatite of the invention is purchased from Nanjing Ephrix nanomaterial Co. Hydroxyapatite-like white crystalline powder, insoluble in water and organic solvents.
Pretreatment of nano hydroxyapatite: adding dilute hydrochloric acid into the nano hydroxyapatite, stirring for 30min at room temperature, adding dilute sodium bicarbonate, and neutralizing the hydrochloric acid in the solution until the solution is neutral.
Modified nano hydroxyapatite
Mixing the pretreated nano hydroxyapatite with SOC12Mixing, adding DMF as catalyst, crushing the suspension in a crusher, reflux reacting the mixed solution in oil bath, filtering, stoving to obtain hydroxyapatite acylate chloride and dodecylamine solution in DMF solventMixing, placing in an oil bath pot for reaction, and finally filtering and drying to obtain the hydroxylapatite modified by the dodecylamine.
The self-made nano-hydroxyapatite is used as a deslagging agent, because the nano-hydroxyapatite has fine particles, a hydration layer can be formed around the hydroxyapatite under the action of circulating water, and the hydration layer also exists around the surface of the slag ball. After the dodecylamine nano hydroxyapatite is adopted for modification, the short and coarse fibers in the system are easier to separate from the mineral fibers due to the long alkyl chain.
(3) Collecting: and (3) extracting the mineral fibers subjected to deslagging in the step (2) by a water pump when the slag ball rate of the mineral fibers processed in the step (2) reaches 0.5-2%.
(4) And (3) dehydrating: drying the collected mineral fibers.
As a preferred technical scheme, the drying temperature condition is that the initial temperature is 30-40 ℃, the heating rate is 1-4 ℃/min, and the gradient heating is carried out to 50-60 ℃.
The invention provides a mineral fiber prepared by a circulating water method deslagging process in the mineral fiber production process.
The third aspect of the invention provides the application of the mineral fiber in paper industry, thermal insulation materials and refractory materials.
The present invention will be described in further detail with reference to specific examples.
The starting materials mentioned in the present invention are commercially available without specific indication.
Example 1
A deslagging process by a circulating water method in the production process of mineral fibers comprises the following steps:
(1) immersing: 100g of mineral fiber is immersed in an immersion tank filled with circulating water to obtain a crude product of the mineral fiber.
(2) Deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system; the deslagging system is used for deslagging for the first time, and the coarse mineral fiber product in the step (1) is pushed into a first deslagging tank through the action of circulating water; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; and deslagging for the third time, namely pushing the mineral fiber coarse product subjected to secondary deslagging into a third deslagging groove under the action of circulating water. The slag remover is a conical slag remover.
(3) Collecting: and (3) extracting the mineral fiber subjected to deslagging in the step (2) by a water pump when the slag ball rate of the mineral fiber treated in the step (2) reaches 2%.
(4) And (3) dehydrating: drying the collected mineral fibers. The drying temperature condition is that the initial temperature is 30 ℃, the temperature is increased to 50 ℃ in a gradient way by taking 1 ℃/min as the heating rate, the temperature is stabilized at 50 ℃, and the fiber is heated and dried.
Example 2
(1) Immersing: 100g of mineral fiber is immersed in an immersion tank filled with circulating water to obtain a crude product of the mineral fiber.
(2) Deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system; the deslagging system is used for deslagging for the first time, and the mineral fiber crude product in the step (1) is pushed into a first deslagging groove under the action of circulating water; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; and removing slag for the fourth time, namely pushing the mineral fiber coarse product removed with slag for the third time into a fourth slag removing groove under the action of circulating water. The slag remover is a conical slag remover.
(3) Collecting: and (3) extracting the mineral fiber subjected to deslagging in the step (2) by a water pump when the slag ball rate of the mineral fiber treated in the step (2) reaches 1.5%.
(4) And (3) dehydrating: drying the collected mineral fibers. The drying temperature condition is that the initial temperature is 35 ℃, the temperature is increased to 55 ℃ in a gradient way by taking 2 ℃/min as the heating rate, the temperature is stabilized at 55 ℃, and the fiber is heated and dried.
Example 3
(1) Immersing: 100g of mineral fiber is immersed in an immersion tank filled with circulating water to obtain a crude product of the mineral fiber.
(2) Deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system; the deslagging system is used for deslagging for the first time, and the mineral fiber crude product in the step (1) is pushed into a first deslagging groove under the action of circulating water; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; and fourth deslagging, namely pushing the mineral fiber coarse product subjected to third deslagging to a fourth deslagging groove under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging groove. The slag remover is a conical slag remover.
(3) Collecting: and (3) when the slag ball rate of the mineral fiber processed in the step (2) reaches 1.2%, extracting the mineral fiber subjected to slag removal in the step (2) by a water pump.
(4) And (3) dehydrating: drying the collected mineral fibers. The drying temperature condition is that the initial temperature is 40 ℃, the temperature is increased to 60 ℃ in a gradient way by taking 3 ℃/min as the heating rate, the temperature is stabilized at 60 ℃, and the fiber is heated and dried.
Example 4
(1) Immersing: 100g of mineral fiber is immersed in an immersion tank filled with circulating water to obtain a crude product of the mineral fiber.
(2) Deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system; the deslagging system is used for deslagging for the first time, the mineral fiber crude product in the step (1) is pushed into a first deslagging tank through the action of circulating water, and a deslagging device is arranged in the deslagging tank; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; and fourth deslagging, namely pushing the mineral fiber coarse product subjected to third deslagging to a fourth deslagging groove under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging groove. The slag remover is a conical slag remover.
(3) Collecting: and (3) extracting the mineral fiber subjected to deslagging in the step (2) by a water pump when the slag ball rate of the mineral fiber treated in the step (2) reaches 1%.
(4) And (3) dehydrating: drying the collected mineral fibers. The drying temperature condition is that the initial temperature is 40 ℃, the temperature is increased to 60 ℃ in a gradient way by taking 4 ℃/min as the heating rate, the temperature is stabilized at 60 ℃, and the fiber is heated and dried.
Example 5
(1) Immersing: 100g of mineral fiber is immersed in an immersion tank filled with circulating water to obtain a crude product of the mineral fiber.
(2) Deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system; the deslagging system is used for deslagging for the first time, the mineral fiber crude product in the step (1) is pushed into a first deslagging tank through the action of circulating water, and a deslagging device is arranged in the deslagging tank; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; removing slag for the fifth time, and pushing the coarse mineral fiber product removed by the fourth time into a fifth slag removing groove under the action of circulating water; removing slag for the sixth time, pushing the mineral fiber crude product removed from the fifth time into a sixth slag removing groove through the action of circulating water, wherein a slag remover is arranged in the fourth slag removing groove; and removing slag for the seventh time, namely pushing the mineral fiber crude product removed with slag for the sixth time into a seventh slag removing groove under the action of circulating water. The slag remover is a conical slag remover.
(3) Collecting: and (3) extracting the mineral fiber subjected to deslagging in the step (2) by a water pump when the slag ball rate of the mineral fiber treated in the step (2) reaches 1%.
(4) And (3) dehydrating: drying the collected mineral fibers. The drying temperature condition is that the initial temperature is 40 ℃, the temperature is increased to 60 ℃ in a gradient way by taking 5 ℃/min as the heating rate, the temperature is stabilized at 60 ℃, and the fiber is heated and dried.
Example 6
(1) Immersing: 100g of mineral fiber is immersed in an immersion tank filled with circulating water to obtain a crude product of the mineral fiber.
(2) Deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system; the deslagging system is used for deslagging for the first time, the mineral fiber crude product in the step (1) is pushed into a first deslagging tank through the action of circulating water, and a deslagging device is arranged in the deslagging tank; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; removing slag for the fifth time, and pushing the coarse mineral fiber product removed by the fourth time into a fifth slag removing groove under the action of circulating water; removing slag for the sixth time, pushing the mineral fiber crude product removed from the fifth time into a sixth slag removing groove through the action of circulating water, wherein a slag remover is arranged in the fourth slag removing groove; and removing slag for the seventh time, namely pushing the mineral fiber crude product removed with slag for the sixth time into a seventh slag removing groove under the action of circulating water. The slag remover is a conical slag remover. And 1g of deslagging agent is added into the third deslagging tank, the fifth deslagging tank and the seventh deslagging tank respectively, and the deslagging agent is nano-hydroxyapatite.
Pretreatment of nano hydroxyapatite: adding 500mL of dilute hydrochloric acid into 10g of nano hydroxyapatite, stirring for 30min at room temperature, adding dilute sodium bicarbonate, and neutralizing the hydrochloric acid in the solution until the solution is neutral to obtain the slag remover.
(3) Collecting: and (3) extracting the mineral fiber subjected to deslagging in the step (2) by a water pump when the slag ball rate of the mineral fiber treated in the step (2) reaches 1%.
(4) And (3) dehydrating: drying the collected mineral fibers. The drying temperature condition is that the initial temperature is 40 ℃, the temperature is increased to 60 ℃ in a gradient way by taking 5 ℃/min as the heating rate, the temperature is stabilized at 60 ℃, and the fiber is heated and dried.
Example 7
(1) Immersing: 100g of mineral fiber is immersed in an immersion tank filled with circulating water to obtain a crude product of the mineral fiber.
(2) Deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system; the deslagging system is used for deslagging for the first time, the mineral fiber crude product in the step (1) is pushed into a first deslagging tank through the action of circulating water, and a deslagging device is arranged in the deslagging tank; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; removing slag for the fifth time, and pushing the coarse mineral fiber product removed by the fourth time into a fifth slag removing groove under the action of circulating water; removing slag for the sixth time, pushing the mineral fiber crude product removed from the fifth time into a sixth slag removing groove through the action of circulating water, wherein a slag remover is arranged in the fourth slag removing groove; and removing slag for the seventh time, namely pushing the mineral fiber crude product removed with slag for the sixth time into a seventh slag removing groove under the action of circulating water. The slag remover is a conical slag remover. 0.5g of deslagging agent is respectively added into the third deslagging tank, the fifth deslagging tank and the seventh deslagging tank, and the deslagging agent is dodecylamine modified nano-hydroxyapatite.
Pretreatment of nano hydroxyapatite: adding 500mL of dilute hydrochloric acid into 10g of nano hydroxyapatite, stirring for 30min at room temperature, adding dilute sodium bicarbonate, and neutralizing the hydrochloric acid in the solution until the solution is neutral to obtain the slag remover.
Dodecylamine modified nano-hydroxyapatite: 5g of the pretreatmentThe nanometer hydroxyapatite and 100mL SOC12Mixing, adding 500mL of DMF as a catalyst, crushing the suspension in a crusher, placing the mixed solution in an oil bath at 80 ℃ for reflux reaction, filtering, drying, mixing the obtained acyl chloride hydroxyapatite with 8.5g of dodecylamine solution in a DMF solvent, placing in an oil bath at 65 ℃ for reaction, and finally filtering and drying to obtain the dodecylamine modified hydroxyapatite.
(3) Collecting: and (3) extracting the mineral fiber subjected to deslagging in the step (2) by a water pump when the slag ball rate of the mineral fiber treated in the step (2) reaches 1%.
(4) And (3) dehydrating: drying the collected mineral fibers. The drying temperature condition is that the initial temperature is 40 ℃, the temperature is increased to 60 ℃ in a gradient way by taking 5 ℃/min as the heating rate, the temperature is stabilized at 60 ℃, and the fiber is heated and dried.
Example 8
(1) Immersing: 100g of mineral fiber is immersed in an immersion tank filled with circulating water to obtain a crude product of the mineral fiber.
(2) Deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system; the deslagging system is used for deslagging for the first time, the mineral fiber crude product in the step (1) is pushed into a first deslagging tank through the action of circulating water, and a deslagging device is arranged in the deslagging tank; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; removing slag for the fifth time, and pushing the coarse mineral fiber product removed by the fourth time into a fifth slag removing groove under the action of circulating water; removing slag for the sixth time, pushing the mineral fiber crude product removed from the fifth time into a sixth slag removing groove through the action of circulating water, wherein a slag remover is arranged in the fourth slag removing groove; and removing slag for the seventh time, namely pushing the mineral fiber crude product removed with slag for the sixth time into a seventh slag removing groove under the action of circulating water. The slag remover is a conical slag remover. And 1.5g of deslagging agent is respectively added into the third deslagging tank, the fifth deslagging tank and the seventh deslagging tank, wherein the deslagging agent is dodecylamine modified nano-hydroxyapatite.
Pretreatment of nano hydroxyapatite: adding 500mL of dilute hydrochloric acid into 10g of nano hydroxyapatite, stirring for 30min at room temperature, adding dilute sodium bicarbonate, and neutralizing the hydrochloric acid in the solution until the solution is neutral to obtain the slag remover.
Dodecylamine modified nano-hydroxyapatite: 5g of pretreated nano-hydroxyapatite and 100mL of SOC12Mixing, adding 500mL of DMF as a catalyst, crushing the suspension in a crusher, placing the mixed solution in an oil bath at 80 ℃ for reflux reaction, filtering, drying, mixing the obtained acyl chloride hydroxyapatite with 8.5g of dodecylamine solution in a DMF solvent, placing in an oil bath at 65 ℃ for reaction, and finally filtering and drying to obtain the dodecylamine modified hydroxyapatite.
(3) Collecting: and (3) extracting the mineral fiber subjected to deslagging in the step (2) by a water pump when the slag ball rate of the mineral fiber treated in the step (2) reaches 1%.
(4) And (3) dehydrating: drying the collected mineral fibers. The drying temperature condition is that the initial temperature is 40 ℃, the temperature is increased to 60 ℃ in a gradient way by taking 5 ℃/min as the heating rate, the temperature is stabilized at 60 ℃, and the fiber is heated and dried.
Example 9
(1) Immersing: 100g of mineral fiber is immersed in an immersion tank filled with circulating water to obtain a crude product of the mineral fiber.
(2) Deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system; the deslagging system is used for deslagging for the first time, the mineral fiber crude product in the step (1) is pushed into a first deslagging tank through the action of circulating water, and a deslagging device is arranged in the deslagging tank; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank; removing slag for the fifth time, and pushing the coarse mineral fiber product removed by the fourth time into a fifth slag removing groove under the action of circulating water; deslagging for the sixth time, pushing the mineral fiber coarse product subjected to deslagging for the fifth time into a sixth deslagging groove through the action of circulating water; removing slag for the seventh time, and pushing the mineral fiber crude product removed with slag for the sixth time into a seventh slag removing groove through the action of circulating water; the eighth deslagging, namely pushing the mineral fiber crude product subjected to the seventh deslagging to a sixth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the eighth deslagging tank; the ninth deslagging, namely pushing the coarse mineral fiber product subjected to the eighth deslagging to a sixth deslagging groove under the action of circulating water; and removing slag for the tenth time, and pushing the mineral fiber coarse product removed with slag for the ninth time into a tenth slag removing groove under the action of circulating water. 1g of deslagging agent is respectively added into the third deslagging tank, the fifth deslagging tank, the sixth deslagging tank, the seventh deslagging tank, the ninth deslagging agent and the tenth deslagging tank, and the deslagging agent is dodecylamine modified nano-hydroxyapatite.
Pretreatment of nano hydroxyapatite: adding 500mL of dilute hydrochloric acid into 10g of nano hydroxyapatite, stirring for 30min at room temperature, adding dilute sodium bicarbonate, and neutralizing the hydrochloric acid in the solution until the solution is neutral to obtain the slag remover.
Dodecylamine modified nano-hydroxyapatite: 5g of pretreated nano-hydroxyapatite and 100mL of SOC12Mixing, adding 500mL of DMF as a catalyst, crushing the suspension in a crusher, placing the mixed solution in an oil bath at 80 ℃ for reflux reaction, filtering, drying, mixing the obtained acyl chloride hydroxyapatite with 8.5g of dodecylamine solution in a DMF solvent, placing in an oil bath at 65 ℃ for reaction, and finally filtering and drying to obtain the dodecylamine modified hydroxyapatite.
(3) Collecting: and (3) extracting the mineral fiber subjected to deslagging in the step (2) by a water pump when the slag ball rate of the mineral fiber treated in the step (2) reaches 1%.
(4) And (3) dehydrating: drying the collected mineral fibers. The drying temperature condition is that the initial temperature is 40 ℃, the temperature is increased to 60 ℃ in a gradient way by taking 5 ℃/min as the heating rate, the temperature is stabilized at 60 ℃, and the fiber is heated and dried.
Comparative example 1
The slag removal process in the mineral fiber production process comprises the following steps:
(1) immersing: 100g of mineral fibers are immersed in an immersion bath to obtain a crude product of mineral fibers.
(2) Deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system; the deslagging system is a deslagging device.
(3) Collecting: and (3) extracting the mineral fibers subjected to deslagging in the step (2) by a water pump.
(4) And (3) dehydrating: drying the collected mineral fibers.
Comparative example 2
The traditional deslagging process is used for deslagging the mineral fibers by using a deslagging device.
Performance testing
Measurement of average shot rate: the examples and comparative examples were each subjected to a drying treatment with the impurity removal system described above. Respectively and randomly taking 10g of dried mineral fibers, placing the mineral fibers in a beaker, adding deionized water, stirring for 10min, drying slag balls at the bottom of the beaker, weighing, and calculating the slag ball rate.
The shot rate is (shot mass ÷ 10g) × 100%.
The above operation was repeated 3 times and the average value was taken.
The lower the average shot ratio value is, the more ideal the effect of removing impurities in mineral fibers after the deslagging process is.
TABLE 1 average shot Rate test results
The following conclusions can be obtained from the results of the average shot rate tests of the examples and comparative examples in table 1:
the deslagging process of the circulating water method in the mineral fiber production process of the invention can completely remove impurities in the mineral fibers, can meet the requirement of the market on pure mineral fibers, and compared with the traditional deslagging method, the deslagging effect is obviously improved.
Claims (3)
1. A deslagging process by a circulating water method in the production process of mineral fibers is characterized by comprising the following steps:
(1) immersing: immersing mineral fibers into an immersion tank filled with circulating water to obtain a crude mineral fiber product;
(2) deslagging: deslagging the crude mineral fiber product obtained in the step (1) through a deslagging system;
(3) collecting: when the slag ball rate of the mineral fiber treated in the step (2) reaches 0.5-2%, extracting the mineral fiber subjected to slag removal in the step (2) by a water pump;
(4) and (3) dehydrating: drying the collected mineral fibers; the drying temperature condition is that the initial temperature is 30-40 ℃, the heating rate is 1-4 ℃/min, and the gradient heating is carried out to 50-60 ℃;
the slag ball rate is that 10g of mineral fiber which is not dried is randomly taken out from a slag removing groove at the tail end in the slag removing process, deionized water is added, the mixture is stirred in a beaker for 10min, the slag ball at the bottom of the beaker is directly weighed without being dried, and the slag ball rate is calculated; slag ball rate is (slag ball mass ÷ 10g) x 100%;
the deslagging system comprises a first deslagging system, wherein the coarse mineral fiber product in the step (1) is pushed into a first deslagging tank through the action of circulating water, and a deslagging device is arranged in the first deslagging tank; the coarse mineral fiber products subjected to primary deslagging are pushed into a second deslagging groove under the action of circulating water, and a deslagging device is arranged in the second deslagging groove; deslagging for the third time, pushing the mineral fiber crude product subjected to secondary deslagging into a third deslagging tank through the action of circulating water; fourth deslagging, pushing the mineral fiber crude product subjected to third deslagging to a fourth deslagging tank under the action of circulating water, wherein a deslagging device is arranged in the fourth deslagging tank;
the connection parts of the first, second, third and fourth deslagging grooves and the adjacent deslagging groove are provided with air flotation devices, and the immersion groove is internally provided with a stirring device;
adding a deslagging agent into the first deslagging tank, the second deslagging tank, the third deslagging tank and the fourth deslagging tank, wherein the deslagging agent is pretreated nano hydroxyapatite or dodecylamine modified nano hydroxyapatite;
pretreatment of nano hydroxyapatite: adding dilute hydrochloric acid into the nano-hydroxyapatite, stirring for 30min at room temperature, adding dilute sodium bicarbonate, and neutralizing the hydrochloric acid in the solution until the solution is neutral;
modified nano-hydroxyapatite: mixing the pretreated nano hydroxyapatite with SOC12Mixing, adding DMF as a catalyst, crushing the suspension in a crusher, placing the mixed solution in an oil bath for reflux reaction, filtering, drying, mixing the obtained acyl chloride hydroxyapatite with a dodecylamine solution in a DMF solvent, placing the mixture in an oil bath for reaction, and finally filtering and drying to obtain dodecylamine modified hydroxyapatite;
the mass ratio of the mineral fibers immersed in the deslagging agents added into the first deslagging tank, the second deslagging tank, the third deslagging tank and the fourth deslagging tank is 1: (0.01-0.015).
2. The process for deslagging in mineral fiber production process according to claim 1, wherein the stirring speed of the stirring device is 10-40 r/min.
3. The process for deslagging in mineral fiber production process according to claim 1, wherein the stirring speed of the stirring device is 20-30 r/min.
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| JP2006016717A (en) * | 2004-06-30 | 2006-01-19 | Nippon Steel Corp | Recycling of used ceramic fiber |
| CN201502008U (en) * | 2009-08-11 | 2010-06-09 | 厦门榕兴纸业制造有限公司 | Mineral fiber sediment removing device |
| DE102009008810A1 (en) * | 2009-02-12 | 2010-08-19 | Klaus Sommer | Method for the treatment of mineral fiber, mineral fiber wool and mineral fiber flat structure with improved textile characteristics, comprises removing solid impurities such as slag particles from the mineral fiber and fiber wool |
| CN102330377A (en) * | 2011-07-13 | 2012-01-25 | 苏州维艾普新材料有限公司 | High-efficiency circulating deslagging device and deslagging method thereof |
| CN202559177U (en) * | 2012-03-21 | 2012-11-28 | 丁建础 | Inorganic fiber pulping, dewatering and deslagging device |
| CN204448254U (en) * | 2015-01-22 | 2015-07-08 | 河南省西峡开元冶金材料有限公司 | A kind of mineral fibres deslagging device |
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2017
- 2017-01-06 CN CN201710010215.5A patent/CN106830668B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006016717A (en) * | 2004-06-30 | 2006-01-19 | Nippon Steel Corp | Recycling of used ceramic fiber |
| DE102009008810A1 (en) * | 2009-02-12 | 2010-08-19 | Klaus Sommer | Method for the treatment of mineral fiber, mineral fiber wool and mineral fiber flat structure with improved textile characteristics, comprises removing solid impurities such as slag particles from the mineral fiber and fiber wool |
| CN201502008U (en) * | 2009-08-11 | 2010-06-09 | 厦门榕兴纸业制造有限公司 | Mineral fiber sediment removing device |
| CN102330377A (en) * | 2011-07-13 | 2012-01-25 | 苏州维艾普新材料有限公司 | High-efficiency circulating deslagging device and deslagging method thereof |
| CN202559177U (en) * | 2012-03-21 | 2012-11-28 | 丁建础 | Inorganic fiber pulping, dewatering and deslagging device |
| CN204448254U (en) * | 2015-01-22 | 2015-07-08 | 河南省西峡开元冶金材料有限公司 | A kind of mineral fibres deslagging device |
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