CN1301934C - Briquette for iron-smelting blast furnace lining and its preparation method - Google Patents
Briquette for iron-smelting blast furnace lining and its preparation method Download PDFInfo
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- CN1301934C CN1301934C CNB2004100610263A CN200410061026A CN1301934C CN 1301934 C CN1301934 C CN 1301934C CN B2004100610263 A CNB2004100610263 A CN B2004100610263A CN 200410061026 A CN200410061026 A CN 200410061026A CN 1301934 C CN1301934 C CN 1301934C
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- blast furnace
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- brick fuel
- furnace lining
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Abstract
The present invention relates to a carbon brick refractory material for blast furnace linings and a making method thereof. The present invention has the technical scheme that 50 to 80 wt% of electrically calcined anthracite, 10 to 20 wt% of artificial graphite, 3 to 15 wt% of metal silicon powder, 2 to 8 wt% of silicon carbide powder and 1 to 10 wt% of titanium dioxide powder are uniformly mixed, 5 to 15 wt% of resin is added, and through stirring, shaping and drying, the material is calcined in the atmosphere of carbon embedding. The present invention has the advantages that the cost of the raw material of titanium dioxide is comparatively low, which effectively reduces the production cost, and the titanium carbonitride has high melting point, high hardness, good chemical stability and superior iron melt melting loss resistance performance, which considerably increases the iron melt melting loss resistance performance of the carbon brick for blast furnace linings; the prepared carbon brick has the characteristics of low cost, excellent iron melt permeation and melting loss resistance performance and high heat conduction coefficient.
Description
One, technical field
The invention belongs to technical field of refractory materials, relate in particular to a kind of ironmaking blast furnace lining carbon brick refractory materials and preparation method thereof.
Two, background technology
For prolonging blast furnace campaign, improve properties of refractories, especially prolong cupola well and be absolutely necessary with life-span of refractory materials.At present, blast furnace hearth mainly adopts the brick fuel with premium properties, yet in use behind molten iron contact brick fuel, the infiltration of molten iron takes place easily, the dissolving of carbon element and molten iron be to the mechanical erosion of brick fuel, the difference of the high alumina brick and the brick fuel coefficient of expansion caused during brick fuel was subjected at the bottom of the thermal expansion in hot junction, restriction that cold junction is subjected to furnace shell and the composite burner easily on the other hand thermal stress damage and alkali-metal destruction.This just requires cupola well to have the good molten damage of anti-molten iron and perviousness, high thermal conductivity, high hot strength and high slag resistance with brick fuel.The embrittlement and the molten iron corrosion that how to prevent brick fuel become the problem that the metallargist is concerned about most.
For example, U.S. associating carbonization company limited (being called for short UCAR company) adopts heat pressing process production mold pressing fritter brick fuel (Yang Binjie, U.S.'s fritter brick fuel and blast furnace longevity, plum mountain science and technology, 1991 (1): 49-53), its brickmaking technology is that with the different of common brickmaking technology raw material adds moulds and carries out limit heating edge pressurization later on, the hole that the feasible like this gas evolution that produces because of wedding agent causes is sealed or is blocked under the high pressure effect, simultaneously, brick fuel is formed upward except that adopting calcined anthracite and synthetic graphite, also introduce silicon carbide and silicon-dioxide, the carbon brick volume density height of making, its thermal conductivity, alkali-resistivity, permeability resistance and thermal stress resistance destructive performance are all very superior, its distinguishing feature is that the requirement brick fuel itself has fine thermal conductivity, to guarantee thermal conductive resin between whole masonry and the cooling stave, make the surface of brick be stained with one deck " lining certainly ", to improve the anti-molten iron of bricking, anti-slag and alkali erosional competency.Japan, Elysee-watcher cross interpolation Pure Silicon Metal etc., and (Guo Qingxun translates, blast furnace high-quality micropore carbon brick, external refractory materials, 1996 (7): 23-27), make brick fuel pore microporeization, thereby improve the anti-molten iron perviousness of brick fuel, in pore, form SiC, Si-O-N whisker or particle, reach the brick fuel microporeization, make most of hole diameter less than 1um, in matrix, add 5～10% aluminum oxide powders simultaneously, and replace coal-tar pitch as wedding agent with resin, improve the molten iron erosion-resisting and the permeability resistance of brick fuel, increase the thermal conductivity that content of graphite improves brick fuel.Blast furnaces such as China's Baosteel, Wuhan Iron and Steel Plant, Shoudu Iron and Steel Co, this steel are a large amount of to adopt external high-quality brick fuel, and conditions of blast furnace also obviously improves, but these imported products prices are rather stiff.Though domestic have many producers also at this type of brick fuel of exploitation, as " a kind of high corrosion resistant porous baked carbon brick that is used for blast furnace lining " (CN00116085.0) and " the micropore self-baked charcoal brick that is used for ironmaking blast furnace lining " (CN.00116084.2) patented technology, in traditional brick fuel prescription, introduce metal titanium, improved the solidity to corrosion of brick fuel to a certain extent, but raw materials used metal titanium costs an arm and a leg, cause production cost to increase, be unfavorable for the reduction of blast furnace ironmaking cost, and homemade brick fuel ubiquity quality instability, many large blast furnaces have been spent a large amount of foreign exchanges with brick fuel still dependence on import.
Three, summary of the invention
Task of the present invention provide a kind of cost low, have ironmaking blast furnace lining carbon brick refractory materials of excellent anti-molten iron infiltration and melting loss performance, high thermal conductivity coefficient and preparation method thereof.
For finishing above-mentioned task, the technical solution adopted in the present invention is: with electric calcined anthracite, synthetic graphite, metallic silicon power, carborundum powder, titanium dioxide powder uniform mixing, add resin, through stirring, moulding, drying, bury under the carbon atmosphere and burn till.
The weight percentage of above-mentioned each component is, electric calcined anthracite is 50～80%, and synthetic graphite is 10～20%, and metallic silicon power is 3～15%, and carborundum powder is 2～8%, and titanium dioxide powder is 1～10%, and the admixture resin is 5～15%.
Because the raw materials used titanium dioxide price of the present invention is relatively cheap, effectively reduces production cost.Titanium carbonitride has high-melting-point, high rigidity, good chemical stability and good anti-molten iron melting loss performance, and just have the titanium carbonitride original position to generate through the sample inside that pyroprocessing is crossed, and reticulate structure distribution, improved the anti-molten iron molten damage performance of blast furnace lining greatly with brick fuel.
Therefore, adopt the prepared carbon brick of technique scheme to have the characteristics of low, the excellent anti-molten iron infiltration of cost and melting loss performance, high thermal conductivity coefficient.The anti-molten iron melting loss performance of the titanium-containing compound brick fuel of the present invention's preparation and the brick fuel of domestic certain manufacturer production relatively sees Table 1.
Two kinds of anti-molten iron melting losses of material of table 1 performance relatively
| The titanium-containing compound brick fuel | The brick fuel of domestic certain manufacturer production | |
| Anti-molten iron melting loss index (%) | 8.9％ | 13.5％ |
| Anti-molten iron penetrating quality | Slightly | Slightly |
Four, embodiment
Embodiment 1:
The ironmaking blast furnace lining carbon brick of present embodiment can be prepared according to following weight percent: electric calcined anthracite 60～70%; Synthetic graphite 9～12%; Metallic silicon power 4～14%; Carborundum powder 3～8%; Titanium dioxide powder 4～9%; Admixture resin 8%.Through stirring, moulding, drying, bury under the carbon atmosphere and burn till.
The anti-molten iron melting loss performance of the titanium-containing compound brick fuel that present embodiment is prepared and the brick fuel of domestic certain manufacturer production relatively sees Table 2.
Two kinds of anti-molten iron melting losses of material of table 2 performance relatively
| The titanium-containing compound brick fuel | The brick fuel of domestic certain manufacturer production | |
| Anti-molten iron melting loss index (%) | 9.0％ | 13.5％ |
| Anti-molten iron penetrating quality | Slightly | Slightly |
Embodiment 2:
The ironmaking blast furnace lining carbon brick of present embodiment can be prepared according to following weight percent: electric calcined anthracite 65～75%; Synthetic graphite 9～14%; Metallic silicon power 7～12%; Carborundum powder 3～8%; Titanium dioxide powder 1～4%; Admixture resin 12%.Through stirring, moulding, drying, bury under the carbon atmosphere and burn till.
The anti-molten iron melting loss performance of the titanium-containing compound brick fuel that present embodiment is prepared and the brick fuel of domestic certain manufacturer production relatively sees Table 3.
Two kinds of anti-molten iron melting losses of material of table 3 performance relatively
| The titanium-containing compound brick fuel | The brick fuel of domestic certain manufacturer production | |
| Anti-molten iron melting loss index (%) | 10％ | 13.5％ |
| Anti-molten iron penetrating quality | Slightly | Slightly |
Embodiment 3:
The ironmaking blast furnace lining carbon brick of present embodiment can be prepared according to following weight percent: electric calcined anthracite 65～75%; Synthetic graphite 9～14%; Metallic silicon power 7～12%; Carborundum powder 3～8%; Titanium dioxide powder 5～8%; Admixture resin 10%.Through stirring, moulding, drying, bury under the carbon atmosphere and burn till.
The anti-molten iron melting loss performance of the titanium-containing compound brick fuel that present embodiment is prepared and the brick fuel of domestic certain manufacturer production relatively sees Table 4.
Two kinds of anti-molten iron melting losses of material of table 4 performance relatively
| The titanium-containing compound brick fuel | The brick fuel of domestic certain manufacturer production | |
| Anti-molten iron melting loss index (%) | 9.5％ | 13.5％ |
| Anti-molten iron penetrating quality | Slightly | Slightly |
Claims (2)
1, a kind of preparation method of ironmaking blast furnace lining carbon brick is characterized in that electric calcined anthracite, synthetic graphite, metallic silicon power, carborundum powder, titanium dioxide powder uniform mixing are added resin, through stirring, moulding, drying, buries under the carbon atmosphere and burns till;
Described each composition weight percentage composition is: electric calcined anthracite is 50～80%, synthetic graphite is 10～20%, metallic silicon power is 3～15%, carborundum powder is 2～8%, titanium dioxide powder is 1～10%, and the admixture resin is 5～15%.
2, the prepared brick fuel that is used for ironmaking blast furnace lining of preparation method that is used for the ironmaking blast furnace lining brick fuel according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100610263A CN1301934C (en) | 2004-11-01 | 2004-11-01 | Briquette for iron-smelting blast furnace lining and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100610263A CN1301934C (en) | 2004-11-01 | 2004-11-01 | Briquette for iron-smelting blast furnace lining and its preparation method |
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| Publication Number | Publication Date |
|---|---|
| CN1769239A CN1769239A (en) | 2006-05-10 |
| CN1301934C true CN1301934C (en) | 2007-02-28 |
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| CNB2004100610263A Expired - Fee Related CN1301934C (en) | 2004-11-01 | 2004-11-01 | Briquette for iron-smelting blast furnace lining and its preparation method |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396648C (en) * | 2006-06-12 | 2008-06-25 | 郑州纪翔耐材股份有限公司 | Novel semi-graphitization silicon nitride carbide brick and its production method |
| CN100351210C (en) * | 2006-06-13 | 2007-11-28 | 曹大庆 | High carbon high strength fireproof board |
| CN100396643C (en) * | 2006-08-04 | 2008-06-25 | 郑州纪翔耐材股份有限公司 | Novel moulded light carbon brick and its producing method |
| CN101187611B (en) * | 2007-11-08 | 2010-05-19 | 武汉科技大学 | Heating device for determining non-metal material high temperature compressive strength |
| CN102432316B (en) * | 2011-09-20 | 2013-07-24 | 武汉科技大学 | Carbon brick used for blast-furnace bottom hearth and its preparation method |
| CN103613393B (en) * | 2013-11-11 | 2017-06-16 | 中冶南方邯郸武彭炉衬新材料有限公司 | A kind of blast furnace lining brick fuel and preparation method thereof |
| CN103951440B (en) * | 2014-03-03 | 2018-01-05 | 河南远洋新材料技术有限公司 | High heat conduction hot press moulding brick fuel |
| CN103979981B (en) * | 2014-05-13 | 2016-08-17 | 宁夏文顺新型炭材制品有限公司 | A kind of big specification semi-graphite carborundum carbon brick and production technology thereof |
| CN111647699A (en) * | 2020-07-04 | 2020-09-11 | 中冶南方邯郸武彭炉衬新材料有限公司 | Carbon block for hearth of blast furnace bottom and manufacturing method thereof |
| CN112028653A (en) * | 2020-09-11 | 2020-12-04 | 武汉钢铁有限公司 | High-thermal-conductivity and corrosion-resistant self-protecting carbon brick for blast furnace and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU814984A1 (en) * | 1979-04-09 | 1981-03-23 | Украинский Научно-Исследовательскийинститут Огнеупоров | Packing refractory mass |
| CN1290755A (en) * | 2000-10-18 | 2001-04-11 | 叶乐 | High corrosion resistant porous baked carbon brick for lining of blast furnace |
| CN1317461A (en) * | 2001-05-24 | 2001-10-17 | 卢成芸 | Mashed carbon paste and method for building furnace with it |
| KR20040022258A (en) * | 2002-09-03 | 2004-03-12 | 주식회사 포스코 | Ceramic fiber inclusion blast furnace taphole mix |
-
2004
- 2004-11-01 CN CNB2004100610263A patent/CN1301934C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU814984A1 (en) * | 1979-04-09 | 1981-03-23 | Украинский Научно-Исследовательскийинститут Огнеупоров | Packing refractory mass |
| CN1290755A (en) * | 2000-10-18 | 2001-04-11 | 叶乐 | High corrosion resistant porous baked carbon brick for lining of blast furnace |
| CN1317461A (en) * | 2001-05-24 | 2001-10-17 | 卢成芸 | Mashed carbon paste and method for building furnace with it |
| KR20040022258A (en) * | 2002-09-03 | 2004-03-12 | 주식회사 포스코 | Ceramic fiber inclusion blast furnace taphole mix |
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| CN1769239A (en) | 2006-05-10 |
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