CN1038325C - Andalusite dry stamp material - Google Patents
Andalusite dry stamp material Download PDFInfo
- Publication number
- CN1038325C CN1038325C CN92112926A CN92112926A CN1038325C CN 1038325 C CN1038325 C CN 1038325C CN 92112926 A CN92112926 A CN 92112926A CN 92112926 A CN92112926 A CN 92112926A CN 1038325 C CN1038325 C CN 1038325C
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- CN
- China
- Prior art keywords
- andalusite
- andaluzite
- powder
- bauxite clinker
- granularity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention a relates to a dry andalusite ramming material which discloses a furnace lining material with the functions of abrasion resistance and thermal shock resistance. The ramming material is suitable for main frequency core induction furnaces and various industrial kilns with the requirements of rapid temperature change and high volume stability at high temperature. The ramming material is prepared from a framework material, a powder material and an additive, wherein the framework material is prepared from andalusite concentrate and alumina clinker (or fused mullite); the powder material is prepared from andalusite fine powder and particles and alumina micropowder (or alpha-Al2O3); the additive is prepared from silicon dioxide micropowder and boric acid. The ramming material has the excellent properties of high refractoriness under load, small creep deformation at high temperature, good abrasion resistance at high temperature, thermal shock resistance, etc. The ramming material can obviously improve the service life of furnaces under simple construction.
Description
The present invention relates to a kind of refractory materials, it is adapted to the furnace lining of the induction furnace of high temperature metals such as molten copper, copper alloy, nickel, aluminium, and thermal shocking, various inner lining of kiln high to the high volume stability requirement.
Present power frequency cored induction heating inner lining of furnace generally adopts siliceous dry type ramming material, this kind ramming mass is strong to the erosion resistibility of acid slag, its weak point is that refractoriness is lower, be generally 1650 ℃, hot strength is low, and thermal shock resistance is poor, is subject to the erosion of basic slag, the runout phenomenon easily takes place cause blowing out, ordinary life is also about Only Six Months.
The object of the present invention is to provide a kind of high temperature resistant, anti-thermal shock, long refractory materials of life-span, to improve the work-ing life of commercial frequency cored induction furnace furnace lining, or prolong those thermal shockings, to life-span of the high various inner lining of kiln of high volume stability requirement, reduced the heat number, enhanced productivity.
In order to achieve the above object, it is framework material that the present invention adopts with andaluzite concentrate, bauxite clinker (or high-purity electrofused mullite) particle or their mixture, and powder is selected bauxite clinker micro mist (or α-Al for use
2O
3) and andaluzite fine powder, micro mist or their mixture; Selecting boric acid, fine silica powder is compound.Framework material, powder and compound are mixed in certain proportion, and its batching composition (by weight percentage) and granularity thereof are as follows:
Andaluzite 30-55% granularity 1-5mm
Bauxite clinker or electrofused mullite 4-10% granularity 3-5mm
Andaluzite 13-28% granularity 1-0.088mm
Andaluzite fine powder 10-15% granularity＜0.088mm
Andaluzite, bauxite clinker admixed finepowder 15-25%
Compound 2-6%
More than several component sums should be absolutely.
AL in the selected andaluzite of the present invention
2O
3Content is preferably more than or equal to 56%, Fe
2O
3Less than 1.5%, refractoriness is greater than 1790 ℃.
AL in the selected bauxite clinker of the present invention
2O
3Content is preferably more than or equal to 80%, and refractoriness is greater than 1790 ℃.Or select electrofused mullite, its AL for use
2O
3Content is 70-77%, Fe
2O
3≤ 0.1%, mullite consists of 〉=and 95%, refractoriness is 1850 ℃.
The selected andaluzite bauxite clinker admixed finepowder particle diameter of the present invention requires less than 500 orders, is a hundred per cent in this admixed finepowder, and wherein andalusite micropowder accounts for 50-65%, bauxite clinker (or α-Al
2O
3) micro mist accounts for 35-50%.
Compound boric acid that the present invention is selected and fine silica powder mixture, in compound absolutely, its mesoboric acid is 20-50%, fine silica powder is 50-80%.
The ratio of the compound that the present invention is selected and granularity have solved the difficult problem of andaluzite material coking property extreme difference effectively, and this ramming mass is after 1000 ℃ * 3h burns, and compressive strength is 26MPa, and folding strength is 1.36MPa.
It is good that the furnace lining of making according to the furnace lining material of the present invention preparation has a volume stability, creep resistance, strong, the anti-erosion of slag resistance, and heat-resisting shake stability is high, the big premium properties that waits of hot strength.Can satisfy the furnace lining needs of inductor blocks such as the molten copper of commercial frequency cored induction furnace, copper alloy, nickel, aluminium, solve the seepage phenomenon effectively, improve the work-ing life of furnace lining, be 3-6 times of siliceous material under the normal circumstances.And material source is wide, and cost is low, easily preparation.
Below the present invention is further illustrated for two example two for row, but scope of the present invention not only is confined to this.
Embodiment one;
7 tons of smelting furnace LR110 inductor blocks (superpower, large section channel) are gone up and are used the furnace lining ramming mass of its inductor block (by weight percentage) composed as follows in the continuous up-casting oxygen-free copper bar production line of Henan Oxygen-free Copper Material General Factory, Xinxiang introduction Finland:
1-5mm andaluzite 35.56%
Grog 4.44% on the 3-5mm alum
1-0.088mm andaluzite 22.22%
≤ 0.088mm andaluzite 13.33%
Andaluzite, bauxite clinker admixed finepowder 20.45%
Compound 4%
The performance index that material reaches:
Behind the 800 ℃ * 3h sintering, compressive strength 14.5MPa, folding strength 0.81MPa, line velocity of variation+0.6%.
Behind the 1350 ℃ * 3h sintering: compressive strength 23.1MPa, folding strength 2.3MPa, line velocity of variation+1.3%.
Behind the 1600 ℃ * 3h sintering: compressive strength 49.4MPa, folding strength 8.55MPa, line velocity of variation+0.7%.
This induction furnace furnace lining moves 17 months continuously, more than 10,000 ton of molten copper, operational excellence still at present.
Embodiment two:
Make liner on homemade 3000 tons of/year continuous up-casting oxygen free copper production line copper smelting furnaces of Xinxiang City, Henan electrician factory, its ramming mass composition is by weight percentage:
1-5mm andaluzite 39.65%
3-5mm electrofused mullite 8.81%
1-0.88mm andaluzite 14.1%
≤ 0.088mm andaluzite 12.34%
Andaluzite, Calcined polishing aluminum oxide admixed finepowder 22%
Compound 3.1%
Claims (5)
1, andalusite dry stamp material is characterized in that: with andaluzite concentrate, bauxite clinker or high-purity electrofused mullite particle or their mixture is framework material, and powder is selected bauxite clinker micro mist or α-AL for use
2O
3With andaluzite fine powder, micro mist or their mixture, selecting boric acid, fine silica powder is compound, framework material, powder and compound are mixed in certain proportion, its batching form by weight percentage and granularity as follows:
Andaluzite 30-55% granularity 1-5mm
Bauxite clinker or electrofused mullite 4-10% granularity 3-5mm
Andaluzite 13-20% granularity 1-0.086mm
Andaluzite fine powder 10-15% granularity＜0.088mm
Andaluzite, bauxite clinker admixed finepowder 15-25%
Compound 2-6%
More than several component sums should be absolutely.
2, andalusite dry stamp material according to claim 1 is characterized in that: Al in the andaluzite that composition is selected for use
2O
3Content is more than or equal to 56%, Fe
2O
3Less than 1.5%, refractoriness is greater than 1790 ℃.
3, andalusite dry stamp material according to claim 1 is characterized in that: AL in the selected bauxite clinker of composition
2O
3Content is more than or equal to 80%, and refractoriness is greater than 1790 ℃, or selects electrofused mullite for use, its Al
2O
3Content is 70-77%, Fe
2O
3≤ 0.1%, mullite consists of 〉=and 95%, refractoriness is 1850 ℃.
4, andalusite dry stamp material according to claim 1, it is characterized in that: the selected andaluzite bauxite clinker admixed finepowder particle diameter of composition requires less than 500 orders, in this admixed finepowder is a hundred per cent, and wherein andalusite micropowder accounts for 50-65%, bauxite clinker or α-Al
2O
3Micro mist accounts for 35-60%.
5, andalusite dry stamp material according to claim 1 is characterized in that: compound boric acid that composition is selected and fine silica powder mixture, and in compound absolutely, its mesoboric acid is 20-50%, fine silica powder is 50-80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92112926A CN1038325C (en) | 1992-11-07 | 1992-11-07 | Andalusite dry stamp material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92112926A CN1038325C (en) | 1992-11-07 | 1992-11-07 | Andalusite dry stamp material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1086801A CN1086801A (en) | 1994-05-18 |
| CN1038325C true CN1038325C (en) | 1998-05-13 |
Family
ID=4946159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92112926A Expired - Fee Related CN1038325C (en) | 1992-11-07 | 1992-11-07 | Andalusite dry stamp material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038325C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462888B (en) * | 2009-01-09 | 2012-07-25 | 霍玉祥 | Formula of high performance strong wear resistance ramming mass |
| CN105036763A (en) * | 2015-06-23 | 2015-11-11 | 刘超群 | Method for preparing ramming mass for constructing slag dam of blast furnace trough |
| CN106495719A (en) * | 2016-11-07 | 2017-03-15 | 马鞍山钢铁股份有限公司 | A kind of preparation method of coke dry quenching furnace chute bracket pillar brick |
| CN106478119A (en) * | 2016-11-07 | 2017-03-08 | 马鞍山钢铁股份有限公司 | A kind of coke dry quenching furnace chute bracket pillar andalusite brick |
| CN109160810A (en) * | 2018-09-03 | 2019-01-08 | 重庆龙煜精密铜管有限公司 | A kind of HIgh strength drying inductor ramming mass smelted for copper material |
| CN116161976B (en) * | 2023-04-24 | 2023-07-07 | 淄博富邦元进耐火材料科技有限公司 | Refractory material and preparation process thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033985A (en) * | 1987-12-31 | 1989-07-19 | 冶金部洛阳耐火材料研究所 | The carbon containing unshape refractory |
-
1992
- 1992-11-07 CN CN92112926A patent/CN1038325C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033985A (en) * | 1987-12-31 | 1989-07-19 | 冶金部洛阳耐火材料研究所 | The carbon containing unshape refractory |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1086801A (en) | 1994-05-18 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |