CN106986648A - A kind of high intensity burner brick and its preparation technology - Google Patents
A kind of high intensity burner brick and its preparation technology Download PDFInfo
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- CN106986648A CN106986648A CN201710158323.7A CN201710158323A CN106986648A CN 106986648 A CN106986648 A CN 106986648A CN 201710158323 A CN201710158323 A CN 201710158323A CN 106986648 A CN106986648 A CN 106986648A
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- 239000011449 brick Substances 0.000 title claims abstract description 59
- 238000005516 engineering process Methods 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 235000013312 flour Nutrition 0.000 claims abstract description 23
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 20
- 238000005469 granulation Methods 0.000 claims abstract description 18
- 230000003179 granulation Effects 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 18
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910021418 black silicon Inorganic materials 0.000 claims abstract description 17
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims description 31
- 238000002156 mixing Methods 0.000 claims description 21
- 238000010304 firing Methods 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000011863 silicon-based powder Substances 0.000 claims description 3
- 238000003763 carbonization Methods 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000010431 corundum Substances 0.000 description 4
- 229910052593 corundum Inorganic materials 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 239000010432 diamond Substances 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 241001649081 Dina Species 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003738 black carbon Substances 0.000 description 1
- 239000011451 fired brick Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- C—CHEMISTRY; METALLURGY
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
- C04B2235/483—Si-containing organic compounds, e.g. silicone resins, (poly)silanes, (poly)siloxanes or (poly)silazanes
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6021—Extrusion moulding
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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- Chemical & Material Sciences (AREA)
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- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a kind of high intensity burner brick and its preparation technology, burner brick component includes 20 40 parts of black silicon carbide, 8 15 parts of silicones, 10 20 parts of green silicon carbide, 10 20 parts of 95 aluminum oxide granulation material, 10 20 parts of premixing flour by weight, preparation technology of the present invention is simple, obtained burner brick intensity is high, hardness is big, and service life is long.
Description
Technical field
The present invention relates to burner brick preparing technical field, specially a kind of high intensity burner brick and its preparation technology.
Background technology
Artificial small-sized bulk for building, point fired brick (referring mainly to clay brick) and no-firing brick (Dinas brickes, flyash
Brick etc.), it is commonly called as brick.Clay brick for primary raw material, handles through pug, be molded with clay powders such as (including) shale, gangues,
Dry and roasting is formed.Burner process for producing bricks of the prior art is complicated, and obtained burner brick hardness is low, low intensity, uses
Short life.
The content of the invention
It is an object of the invention to provide a kind of high intensity burner brick and its preparation technology, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the present invention provides following technical scheme：A kind of high intensity burner brick, burner brick component is by weight
Measure number include 20-40 parts of black silicon carbide, 8-15 parts of silicones, 10-20 parts of green silicon carbide, 10-20 parts of 95 aluminum oxide granulation material,
10-20 parts of premixing flour.
It is preferred that, the premixing flour is made up of 40% kaolin, 50% calcined oxide aluminium powder, 10% silicon powder.
It is preferred that, composition proportion preferably is：30 parts of black silicon carbide, 12 parts of silicones, 15 parts of green silicon carbide, 95 aluminum oxide
15 parts of granulation material, 15 parts of premixing flour.
It is preferred that, its preparation technology comprises the following steps：
A, black silicon carbide, green silicon carbide, 95 aluminum oxide granulation materials are added in pulverizer after mixing and crushed, pulverizer rotating speed is
2000-4000 revs/min, grinding time is 10min-20min, obtains mixture A；
B, addition silicones, premixing flour mixing in mixture A, add in stirred tank stir afterwards, stirred tank rotating speed is 1000-
2000 revs/min, mixing time is 5min-10min, obtains mixture B；
C, by mixture B add burner bricks die in, afterwards add press-forming machine in suppress；
D, the burner brick after compacting is put into baking furnace fired afterwards, firing temperature is 1300 DEG C -1500 DEG C, and the firing time is
20h-24h；
E, by step D fire after burner brick polished, grind off burr；
F, finally carry out packaging and storage.
Compared with prior art, the beneficial effects of the invention are as follows：
Preparation technology of the present invention is simple, and obtained burner brick intensity is high, hardness is big, and service life is long；The black silicon carbide of addition is hard
Degree is between corundum and diamond, and mechanical strength is higher than corundum, and property is crisp and sharp；The green silicon carbide of addition, which has, preferably leads
Hot and characteristic of semiconductor；The premixing flour added in addition can further improve the hardness and intensity of burner brick.
Embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment
Only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
The present invention provides a kind of technical scheme：A kind of high intensity burner brick, burner brick component includes black carbon by weight
20-40 parts of SiClx, 8-15 parts of silicones, 10-20 parts of green silicon carbide, 10-20 parts of 95 aluminum oxide granulation material, 10-20 parts of premixing flour；
Wherein, premixing flour is made up of 40% kaolin, 50% calcined oxide aluminium powder, 10% silicon powder.
Embodiment one：
A kind of high intensity burner brick, burner brick component includes 20 parts of black silicon carbide, 8 parts of silicones, green silicon carbide by weight
10 parts, 10 parts of 95 aluminum oxide granulation material, 10 parts of premixing flour.
The preparation technology of the present embodiment comprises the following steps：
A, black silicon carbide, green silicon carbide, 95 aluminum oxide granulation materials are added in pulverizer after mixing and crushed, pulverizer rotating speed is
2000 revs/min, grinding time is 10min, obtains mixture A；
B, addition silicones, premixing flour mixing in mixture A, add in stirred tank stir afterwards, stirred tank rotating speed is 1000
Rev/min, mixing time is 5min, obtains mixture B；
C, by mixture B add burner bricks die in, afterwards add press-forming machine in suppress；
D, afterwards by the burner brick after compacting be put into baking furnace fire, firing temperature be 1300 DEG C, the firing time is 20h；
E, by step D fire after burner brick polished, grind off burr；
F, finally carry out packaging and storage.
Embodiment two：
A kind of high intensity burner brick, burner brick component includes 40 parts of black silicon carbide, 15 parts of silicones, green silicon carbide by weight
20 parts, 20 parts of 95 aluminum oxide granulation material, 20 parts of premixing flour.
The preparation technology of the present embodiment comprises the following steps：
A, black silicon carbide, green silicon carbide, 95 aluminum oxide granulation materials are added in pulverizer after mixing and crushed, pulverizer rotating speed is
4000 revs/min, grinding time is 20min, obtains mixture A；
B, addition silicones, premixing flour mixing in mixture A, add in stirred tank stir afterwards, stirred tank rotating speed is 2000
Rev/min, mixing time is 10min, obtains mixture B；
C, by mixture B add burner bricks die in, afterwards add press-forming machine in suppress；
D, afterwards by the burner brick after compacting be put into baking furnace fire, firing temperature be 1500 DEG C, the firing time is 24h；
E, by step D fire after burner brick polished, grind off burr；
F, finally carry out packaging and storage.
Embodiment three：
A kind of high intensity burner brick, burner brick component includes 25 parts of black silicon carbide, 9 parts of silicones, green silicon carbide by weight
12 parts, 12 parts of 95 aluminum oxide granulation material, 12 parts of premixing flour.
The preparation technology of the present embodiment comprises the following steps：
A, black silicon carbide, green silicon carbide, 95 aluminum oxide granulation materials are added in pulverizer after mixing and crushed, pulverizer rotating speed is
2500 revs/min, grinding time is 12min, obtains mixture A；
B, addition silicones, premixing flour mixing in mixture A, add in stirred tank stir afterwards, stirred tank rotating speed is 1200
Rev/min, mixing time is 6min, obtains mixture B；
C, by mixture B add burner bricks die in, afterwards add press-forming machine in suppress；
D, afterwards by the burner brick after compacting be put into baking furnace fire, firing temperature be 1350 DEG C, the firing time is 21h；
E, by step D fire after burner brick polished, grind off burr；
F, finally carry out packaging and storage.
Example IV：
A kind of high intensity burner brick, burner brick component includes 35 parts of black silicon carbide, 13 parts of silicones, green silicon carbide by weight
18 parts, 18 parts of 95 aluminum oxide granulation material, 18 parts of premixing flour.
The preparation technology of the present embodiment comprises the following steps：
A, black silicon carbide, green silicon carbide, 95 aluminum oxide granulation materials are added in pulverizer after mixing and crushed, pulverizer rotating speed is
3500 revs/min, grinding time is 18min, obtains mixture A；
B, addition silicones, premixing flour mixing in mixture A, add in stirred tank stir afterwards, stirred tank rotating speed is 1800
Rev/min, mixing time is 8min, obtains mixture B；
C, by mixture B add burner bricks die in, afterwards add press-forming machine in suppress；
D, afterwards by the burner brick after compacting be put into baking furnace fire, firing temperature be 1450 DEG C, the firing time is 23h；
E, by step D fire after burner brick polished, grind off burr；
F, finally carry out packaging and storage.、
Embodiment five：
A kind of high intensity burner brick, burner brick component includes 30 parts of black silicon carbide, 12 parts of silicones, green silicon carbide by weight
15 parts, 15 parts of 95 aluminum oxide granulation material, 15 parts of premixing flour.
The preparation technology of the present embodiment comprises the following steps：
A, black silicon carbide, green silicon carbide, 95 aluminum oxide granulation materials are added in pulverizer after mixing and crushed, pulverizer rotating speed is
3000 revs/min, grinding time is 15min, obtains mixture A；
B, addition silicones, premixing flour mixing in mixture A, add in stirred tank stir afterwards, stirred tank rotating speed is 1500
Rev/min, mixing time is 7min, obtains mixture B；
C, by mixture B add burner bricks die in, afterwards add press-forming machine in suppress；
D, afterwards by the burner brick after compacting be put into baking furnace fire, firing temperature be 1400 DEG C, the firing time is 22h；
E, by step D fire after burner brick polished, grind off burr；
F, finally carry out packaging and storage.
Preparation technology of the present invention is simple, and obtained burner brick intensity is high, hardness is big, and service life is long；The black carbonization of addition
Silicon hardness is between corundum and diamond, and mechanical strength is higher than corundum, and property is crisp and sharp；The green silicon carbide of addition has preferable
Thermal conductivity and characteristic of semiconductor；The premixing flour added in addition can further improve the hardness and intensity of burner brick.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of high intensity burner brick, it is characterised in that：Burner brick component includes 20-40 parts of black silicon carbide, silicon by weight
8-15 parts of resin, 10-20 parts of green silicon carbide, 10-20 parts of 95 aluminum oxide granulation material, 10-20 parts of premixing flour.
2. a kind of high intensity burner brick according to claim 1, it is characterised in that：The premixing flour by 40% kaolin,
50% calcined oxide aluminium powder, 10% silicon powder composition.
3. a kind of high intensity burner brick according to claim 1, it is characterised in that：It is preferred that composition proportion be：Black carbonization
30 parts of silicon, 12 parts of silicones, 15 parts of green silicon carbide, 15 parts of 95 aluminum oxide granulation material, 15 parts of premixing flour.
4. a kind of high intensity burner brick according to claim 1, it is characterised in that：Its preparation technology comprises the following steps：
A, black silicon carbide, green silicon carbide, 95 aluminum oxide granulation materials are added in pulverizer after mixing and crushed, pulverizer rotating speed is
2000-4000 revs/min, grinding time is 10min-20min, obtains mixture A；
B, addition silicones, premixing flour mixing in mixture A, add in stirred tank stir afterwards, stirred tank rotating speed is 1000-
2000 revs/min, mixing time is 5min-10min, obtains mixture B；
C, by mixture B add burner bricks die in, afterwards add press-forming machine in suppress；
D, the burner brick after compacting is put into baking furnace fired afterwards, firing temperature is 1300 DEG C -1500 DEG C, and the firing time is
20h-24h；
E, by step D fire after burner brick polished, grind off burr；
F, finally carry out packaging and storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710158323.7A CN106986648A (en) | 2017-03-17 | 2017-03-17 | A kind of high intensity burner brick and its preparation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710158323.7A CN106986648A (en) | 2017-03-17 | 2017-03-17 | A kind of high intensity burner brick and its preparation technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106986648A true CN106986648A (en) | 2017-07-28 |
Family
ID=59412141
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710158323.7A Pending CN106986648A (en) | 2017-03-17 | 2017-03-17 | A kind of high intensity burner brick and its preparation technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108249935A (en) * | 2018-02-11 | 2018-07-06 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | It is a kind of for stokehole brick of mineral hot furnace and preparation method thereof |
| CN109020584A (en) * | 2018-10-16 | 2018-12-18 | 宋振亚 | A kind of production method of gassing frame burner brick |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03177377A (en) * | 1989-12-04 | 1991-08-01 | Shinagawa Refract Co Ltd | Sio2-impregnated brick for ceramic burner in hot blast stove |
| CN101921122A (en) * | 2010-08-17 | 2010-12-22 | 河南省耕生高温材料有限公司 | Corundum furnace liner composite and preparation method thereof through isostatic pressing |
| CN104402462A (en) * | 2014-10-13 | 2015-03-11 | 瑞泰科技股份有限公司 | Stopper rod for flow control in production of mineral wool with blast furnace slag and process thereof |
| CN105130474A (en) * | 2015-09-24 | 2015-12-09 | 东南大学 | Fire resistant material and preparation method thereof |
-
2017
- 2017-03-17 CN CN201710158323.7A patent/CN106986648A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03177377A (en) * | 1989-12-04 | 1991-08-01 | Shinagawa Refract Co Ltd | Sio2-impregnated brick for ceramic burner in hot blast stove |
| CN101921122A (en) * | 2010-08-17 | 2010-12-22 | 河南省耕生高温材料有限公司 | Corundum furnace liner composite and preparation method thereof through isostatic pressing |
| CN104402462A (en) * | 2014-10-13 | 2015-03-11 | 瑞泰科技股份有限公司 | Stopper rod for flow control in production of mineral wool with blast furnace slag and process thereof |
| CN105130474A (en) * | 2015-09-24 | 2015-12-09 | 东南大学 | Fire resistant material and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108249935A (en) * | 2018-02-11 | 2018-07-06 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | It is a kind of for stokehole brick of mineral hot furnace and preparation method thereof |
| CN108249935B (en) * | 2018-02-11 | 2020-11-06 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | Furnace eye brick for submerged arc furnace and preparation method thereof |
| CN109020584A (en) * | 2018-10-16 | 2018-12-18 | 宋振亚 | A kind of production method of gassing frame burner brick |
| CN109020584B (en) * | 2018-10-16 | 2021-06-25 | 宋振亚 | Method for manufacturing fire hole brick for singeing machine |
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