CN103787677A - Magnesia-alumina-carbon ladle firebrick - Google Patents
Magnesia-alumina-carbon ladle firebrick Download PDFInfo
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- CN103787677A CN103787677A CN201210435915.6A CN201210435915A CN103787677A CN 103787677 A CN103787677 A CN 103787677A CN 201210435915 A CN201210435915 A CN 201210435915A CN 103787677 A CN103787677 A CN 103787677A
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Abstract
The invention discloses a magnesia-alumina-carbon ladle firebrick which is characterized by being composed of the following components in parts by weight: 28-32 parts of alpha-corundum, 38-42 parts of fused magnesite, 6-8 parts of fused magnesia-alumina spinel, 3-4 parts of alumina micropowder, 1-2 parts of silicon carbide powder, 1.5-2.5 parts of metal aluminum powder, 3-5 parts of phenolic resin and 3-5 parts of flake graphite, wherein the particle sizes of the alpha-corundum, the fused magnesite and the fused magnesia-alumina spinel are all 1-10mm, each component contains 25% of component with the particle size of 1-3mm, 45% of component with the particle size of 3-6mm and 30% of component with the particle size of 6-10mm, the particle sizes of the alumina micropowder, the silicon carbide powder and the metal aluminum powder are all -200 meshes, and the particle size of the flake graphite is -28 meshes. The firebrick is prepared by mixing the raw materials, mechanically pressing and forming.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, relate in particular to a kind of magnalium carbon steel ladle fireproofing tile.
Background technology
At the bottom of the bag of steelworks smelting furnace refining ladle, be all the various composite bricks that adopt with the working lining of bag wall (non-slag line region), to composite brick, the most primary requirement is that the life-span is long, otherwise liner often more changes jobs, not only affect the continuity of work, and because maintenance stopping production can cause very large financial loss.Existing domestic similar low deficiency of product ubiquity life-span ladle for, on average, in the level of 60-80 stove, this is because the reason of following several respects causes: 1, existing ladle uses the selected material of brick major ingredient comparatively cheap, causes product specification low; 2, carbon content high (10% left and right), the thermal conductivity of the content influence product of carbon, carbon content is higher, and product heat conduction is faster, is unfavorable for the insulation of molten steel in ladle; 3, the reason of process aspect, particularly faces product performance in the controlling party of batch mixing process and baking and exerts an influence.
Along with the development of modern steel industry, requirement to steel quality is more and more higher, external refining is widely adopted as one of most important technology, and ladle is as a major equipment of external refining, and the refining condition that its inner lining refractory stands is also more and more harsher.How to accomplish the stable use of refractory materials, and be the problem that nowadays iron and steel enterprise generally faces to minimizing of molten steel pollution.The damage factor of ladle liner refractory brick mainly contains slag corrosion, thermal shocking and mechanical erosion, and specifically damage mode is infiltration and corrosionally structurally peels off and be parallel to the thermal spalling that the crack propagation of hot side causes.The magnalium material refractory brick using before this, to removing, steel inclusion does not have effect and resistance to fouling is poor, easily molten steel is polluted.
Summary of the invention
The object of the invention is to propose a kind of magnalium carbon steel ladle fireproofing tile, the anti-slag corrosion performance of this refractory brick is good, and reduces carburetting, extends ladle work-ing life.
For reaching this object, the present invention by the following technical solutions:
A kind of magnalium carbon steel ladle fireproofing tile, this refractory brick is made up of following component in weight part: α-corundum 28-32 part, electrosmelted magnesite clinker 38-42 part, electric smelting aluminum-spinel 6-8 part, alumina powder 3-4 part, carborundum powder 1-2 part, metallic aluminium powder 1.5-2.5 part, resol 3-5 part, crystalline flake graphite 3-5 part, wherein α-corundum, electrosmelted magnesite clinker, the granularity of electric smelting aluminum-spinel is 1-10mm, in every kind of component, 1-3mm's accounts for 25%, 3-6mm accounts for 45%, 6-10mm accounts for 30%, alumina powder, carborundum powder, the granularity of metallic aluminium powder is-200 orders, the granularity of crystalline flake graphite is-28 orders, described refractory brick makes for above-mentioned raw materials being mixed to also mechanical pressing.
Preferably, this refractory brick is made up of following component in weight part: α-corundum 29-31 part, electrosmelted magnesite clinker 39-41 part, electric smelting aluminum-spinel 6.5-7.5, alumina powder 3.3-3.7 part, carborundum powder 1.3-1.7 part, metallic aluminium powder 1.8-2.2 part, resol 3.5-4.5 part, crystalline flake graphite 3.5-4.5 part, wherein α-corundum, electrosmelted magnesite clinker, the granularity of electric smelting aluminum-spinel is 1-10mm, in every kind of component, 1-3mm's accounts for 25%, 3-6mm accounts for 45%, 6-10mm accounts for 30%, alumina powder, carborundum powder, the granularity of metallic aluminium powder is-200 orders, the granularity of crystalline flake graphite is-28 orders, described refractory brick makes for above-mentioned raw materials being mixed to also mechanical pressing.
Most preferably, this refractory brick is made up of following component in weight part: 30 parts, α-corundum, 40 parts of electrosmelted magnesite clinkers, 7 parts of electric smelting aluminum-spinels, 3.5 parts of alumina powders, 1.5 parts of carborundum powders, 2 parts of metallic aluminium powders, 4 parts, resol, 4 parts of crystalline flake graphites, wherein α-corundum, electrosmelted magnesite clinker, the granularity of electric smelting aluminum-spinel is 1-10mm, in every kind of component, 1-3mm's accounts for 25%, 3-6mm accounts for 45%, 6-10mm accounts for 30%, alumina powder, carborundum powder, the granularity of metallic aluminium powder is-200 orders, the granularity of crystalline flake graphite is-28 orders, described refractory brick makes for above-mentioned raw materials being mixed to also mechanical pressing.
The present invention has following beneficial effect:
1) the present invention adopts the combination of α-corundum, electrosmelted magnesite clinker, electric smelting aluminum-spinel to improve intensity; Adopt the combination of alumina powder, carborundum powder, metallic aluminium powder to make the anti-slag corrosion performance of refractory brick good; Suitably reduce graphite consumption, the proportioning by other components and collaboratively improve antistrip performance, and reduce carburetting, extends ladle work-ing life.
2) the present invention has determined the grain size proportion of above-mentioned each component on the basis of great many of experiments, and the density of refractory brick is improved, and intensity improves.
3) compared to existing technology, this magnalium carbon steel ladle fireproofing tile improves ladle and reaches 60-70% work-ing life.Make thus production can keep high continuity, thereby bring considerable economic benefit.
Embodiment
Embodiment mono-
A kind of magnalium carbon steel ladle fireproofing tile, this refractory brick is made up of following component in weight part: 28 parts, α-corundum, 42 parts of electrosmelted magnesite clinkers, 6 parts of electric smelting aluminum-spinels, 4 parts of alumina powders, 1 part of carborundum powder, 2.5 parts of metallic aluminium powders, 3 parts, resol, 5 parts of crystalline flake graphites, wherein α-corundum, electrosmelted magnesite clinker, the granularity of electric smelting aluminum-spinel is 1-10mm, in every kind of component, 1-3mm's accounts for 25%, 3-6mm accounts for 45%, 6-10mm accounts for 30%, alumina powder, carborundum powder, the granularity of metallic aluminium powder is-200 orders, the granularity of crystalline flake graphite is-28 orders, described refractory brick makes for above-mentioned raw materials being mixed to also mechanical pressing.
Embodiment bis-
A kind of magnalium carbon steel ladle fireproofing tile, this refractory brick is made up of following component in weight part: 32 parts, α-corundum, 38 parts of electrosmelted magnesite clinkers, 8 parts of electric smelting aluminum-spinels, 3 parts of alumina powders, 2 parts of carborundum powders, 1.5 parts of metallic aluminium powders, 5 parts, resol, 3 parts of crystalline flake graphites, wherein α-corundum, electrosmelted magnesite clinker, the granularity of electric smelting aluminum-spinel is 1-10mm, in every kind of component, 1-3mm's accounts for 25%, 3-6mm accounts for 45%, 6-10mm accounts for 30%, alumina powder, carborundum powder, the granularity of metallic aluminium powder is-200 orders, the granularity of crystalline flake graphite is-28 orders, described refractory brick makes for above-mentioned raw materials being mixed to also mechanical pressing.
Embodiment tri-
A kind of magnalium carbon steel ladle fireproofing tile, this refractory brick is made up of following component in weight part: 29 parts, α-corundum, 41 parts of electrosmelted magnesite clinkers, electric smelting aluminum-spinel 6.5, 3.7 parts of alumina powders, 1.3 parts of carborundum powders, 2.2 parts of metallic aluminium powders, 3.5 parts, resol, 4.5 parts of crystalline flake graphites, wherein α-corundum, electrosmelted magnesite clinker, the granularity of electric smelting aluminum-spinel is 1-10mm, in every kind of component, 1-3mm's accounts for 25%, 3-6mm accounts for 45%, 6-10mm accounts for 30%, alumina powder, carborundum powder, the granularity of metallic aluminium powder is-200 orders, the granularity of crystalline flake graphite is-28 orders, described refractory brick makes for above-mentioned raw materials being mixed to also mechanical pressing.
Embodiment tetra-
A kind of magnalium carbon steel ladle fireproofing tile, this refractory brick is made up of following component in weight part: 31 parts, α-corundum, 39 parts of electrosmelted magnesite clinkers, electric smelting aluminum-spinel 7.5, 3.3 parts of alumina powders, 1.7 parts of carborundum powders, 1.8 parts of metallic aluminium powders, 4.5 parts, resol, 3.5 parts of crystalline flake graphites, wherein α-corundum, electrosmelted magnesite clinker, the granularity of electric smelting aluminum-spinel is 1-10mm, in every kind of component, 1-3mm's accounts for 25%, 3-6mm accounts for 45%, 6-10mm accounts for 30%, alumina powder, carborundum powder, the granularity of metallic aluminium powder is-200 orders, the granularity of crystalline flake graphite is-28 orders, described refractory brick makes for above-mentioned raw materials being mixed to also mechanical pressing.Embodiment five
A kind of magnalium carbon steel ladle fireproofing tile, this refractory brick is made up of following component in weight part: 30 parts, α-corundum, 40 parts of electrosmelted magnesite clinkers, 7 parts of electric smelting aluminum-spinels, 3.5 parts of alumina powders, 1.5 parts of carborundum powders, 2 parts of metallic aluminium powders, 4 parts, resol, 4 parts of crystalline flake graphites, wherein α-corundum, electrosmelted magnesite clinker, the granularity of electric smelting aluminum-spinel is 1-10mm, in every kind of component, 1-3mm's accounts for 25%, 3-6mm accounts for 45%, 6-10mm accounts for 30%, alumina powder, carborundum powder, the granularity of metallic aluminium powder is-200 orders, the granularity of crystalline flake graphite is-28 orders, described refractory brick makes for above-mentioned raw materials being mixed to also mechanical pressing.
Claims (3)
1. a magnalium carbon steel ladle fireproofing tile, it is characterized in that, this refractory brick is made up of following component in weight part: α-corundum 28-32 part, electrosmelted magnesite clinker 38-42 part, electric smelting aluminum-spinel 6-8 part, alumina powder 3-4 part, carborundum powder 1-2 part, metallic aluminium powder 1.5-2.5 part, resol 3-5 part, crystalline flake graphite 3-5 part, wherein α-corundum, electrosmelted magnesite clinker, the granularity of electric smelting aluminum-spinel is 1-10mm, in every kind of component, 1-3mm's accounts for 25%, 3-6mm accounts for 45%, 6-10mm accounts for 30%, alumina powder, carborundum powder, the granularity of metallic aluminium powder is-200 orders, the granularity of crystalline flake graphite is-28 orders, described refractory brick makes for above-mentioned raw materials being mixed to also mechanical pressing.
2. a kind of magnalium carbon steel ladle fireproofing tile as claimed in claim 1, it is characterized in that, this refractory brick is made up of following component in weight part: α-corundum 29-31 part, electrosmelted magnesite clinker 39-41 part, electric smelting aluminum-spinel 6.5-7.5, alumina powder 3.3-3.7 part, carborundum powder 1.3-1.7 part, metallic aluminium powder 1.8-2.2 part, resol 3.5-4.5 part, crystalline flake graphite 3.5-4.5 part, wherein α-corundum, electrosmelted magnesite clinker, the granularity of electric smelting aluminum-spinel is 1-10mm, in every kind of component, 1-3mm's accounts for 25%, 3-6mm accounts for 45%, 6-10mm accounts for 30%, alumina powder, carborundum powder, the granularity of metallic aluminium powder is-200 orders, the granularity of crystalline flake graphite is-28 orders, described refractory brick makes for above-mentioned raw materials being mixed to also mechanical pressing.
3. a kind of magnalium carbon steel ladle fireproofing tile as claimed in claim 2, it is characterized in that, this refractory brick is made up of following component in weight part: 30 parts, α-corundum, 40 parts of electrosmelted magnesite clinkers, 7 parts of electric smelting aluminum-spinels, 3.5 parts of alumina powders, 1.5 parts of carborundum powders, 2 parts of metallic aluminium powders, 4 parts, resol, 4 parts of crystalline flake graphites, wherein α-corundum, electrosmelted magnesite clinker, the granularity of electric smelting aluminum-spinel is 1-10mm, in every kind of component, 1-3mm's accounts for 25%, 3-6mm accounts for 45%, 6-10mm accounts for 30%, alumina powder, carborundum powder, the granularity of metallic aluminium powder is-200 orders, the granularity of crystalline flake graphite is-28 orders, described refractory brick makes for above-mentioned raw materials being mixed to also mechanical pressing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210435915.6A CN103787677A (en) | 2012-11-03 | 2012-11-03 | Magnesia-alumina-carbon ladle firebrick |
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| CN201210435915.6A CN103787677A (en) | 2012-11-03 | 2012-11-03 | Magnesia-alumina-carbon ladle firebrick |
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| CN103787677A true CN103787677A (en) | 2014-05-14 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103992126A (en) * | 2014-05-30 | 2014-08-20 | 浙江自立股份有限公司 | Method for preparing tabular corundum brick for working lining of carbon-free steel ladle |
| CN104193366A (en) * | 2014-08-27 | 2014-12-10 | 长兴父子岭特种耐火有限公司 | Castable for molten pool |
| CN107162614A (en) * | 2017-06-13 | 2017-09-15 | 长兴华悦耐火材料厂 | A kind of magnalium carbon refractory brick and preparation method thereof |
| CN108191439A (en) * | 2018-02-28 | 2018-06-22 | 攀钢冶金材料有限责任公司 | A kind of blast furnace slag high temperature cabonization electric furnace refractory brick and preparation method thereof |
| CN110386808A (en) * | 2019-08-20 | 2019-10-29 | 郑州汇丰炉料有限公司 | A kind of resistance to erosion AluminaSpinel Bricks and preparation method thereof |
| CN111995419A (en) * | 2020-09-02 | 2020-11-27 | 巩义市益鑫耐火材料厂 | Environment-friendly reinforced composite dephosphorization coated brick for molten iron pretreatment and preparation method thereof |
-
2012
- 2012-11-03 CN CN201210435915.6A patent/CN103787677A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103992126A (en) * | 2014-05-30 | 2014-08-20 | 浙江自立股份有限公司 | Method for preparing tabular corundum brick for working lining of carbon-free steel ladle |
| CN103992126B (en) * | 2014-05-30 | 2015-07-15 | 浙江自立股份有限公司 | Method for preparing tabular corundum brick for working lining of carbon-free steel ladle |
| CN104193366A (en) * | 2014-08-27 | 2014-12-10 | 长兴父子岭特种耐火有限公司 | Castable for molten pool |
| CN104193366B (en) * | 2014-08-27 | 2015-12-02 | 长兴父子岭特种耐火有限公司 | A kind of molten bath mould material |
| CN107162614A (en) * | 2017-06-13 | 2017-09-15 | 长兴华悦耐火材料厂 | A kind of magnalium carbon refractory brick and preparation method thereof |
| CN108191439A (en) * | 2018-02-28 | 2018-06-22 | 攀钢冶金材料有限责任公司 | A kind of blast furnace slag high temperature cabonization electric furnace refractory brick and preparation method thereof |
| CN108191439B (en) * | 2018-02-28 | 2021-04-27 | 攀钢冶金材料有限责任公司 | Refractory brick for blast furnace slag high-temperature carbonization electric furnace and preparation method thereof |
| CN110386808A (en) * | 2019-08-20 | 2019-10-29 | 郑州汇丰炉料有限公司 | A kind of resistance to erosion AluminaSpinel Bricks and preparation method thereof |
| CN111995419A (en) * | 2020-09-02 | 2020-11-27 | 巩义市益鑫耐火材料厂 | Environment-friendly reinforced composite dephosphorization coated brick for molten iron pretreatment and preparation method thereof |
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Application publication date: 20140514 |