CN102746012B - Castable for major iron runner of blast furnace larger than 2500m<3> - Google Patents
Castable for major iron runner of blast furnace larger than 2500m<3> Download PDFInfo
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- CN102746012B CN102746012B CN 201210281186 CN201210281186A CN102746012B CN 102746012 B CN102746012 B CN 102746012B CN 201210281186 CN201210281186 CN 201210281186 CN 201210281186 A CN201210281186 A CN 201210281186A CN 102746012 B CN102746012 B CN 102746012B
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- blast furnace
- mould material
- parts
- powder
- main trough
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Abstract
The invention relates to a castable for a major iron runner of a blast furnace larger than 2500m<3> and belongs to the field of refractory castables. The castable comprises, by weight, 50-55 parts of tubular corundum, 1-8 parts of bubble zirconia, 3-10 parts of zirconium silicate, 10-25 parts of aluminum zinc spinel powder, 10-15 parts of carbon composite materials, 3-10 parts of aluminum oxide micro powder, 1-2 parts of silicon metal powder, 0.1-0.2 part of sodium tripolyphosphate, 0.05-0.2 part of aluminum metal powder, and 4-10 parts of silica sol suspension. The blast furnace major iron runner made of the castable has the advantages of being good in thermal shock stability, stripping resistant and long in service life.
Description
Technical field
The present invention relates to a kind of greater than 2500m
3The main trough of blast furnace mould material belongs to the refractory castable field.
Background technology
Existing main iron hook mould material is common Al
2O
3-SiC-C matter mould material, but general common Al
2O
3-SiC-C matter main iron hook mould material is used on blast furnace, and disposable iron influx is at 120,000 tons.Along with strengthening smelting, the demand that improves output becomes increasingly conspicuous, and main iron hook requires the requirement of disposable iron influx also more and more stricter, but iron runner is because thermal shock resistance is poor at present, and not antiscour, and then the product that causes peels off, and is short major cause of life-span.
CN102101782A discloses a kind of main iron hook mould material, and described mould material is by alumina, brown corundum, SiC, modified Nano carbon dust, SiO
2Micro mist, aluminous cement, α-A1
2O
3Micro mist, explosion-proof fiber, metallic silicon power, tripoly phosphate sodium STPP, Al (OH)
3And Mg (OH)
2Complex sol suspension is formed.Yet this is the mould material of principal constituent with brown corundum, and thermal shock resistance is poor, causes thermal spalling and structure spalling easily, makes iron runner repairing work frequency increase substantially, and brings big hidden danger for blast furnace stability and safety continuous production, still need improve.
Summary of the invention
The purpose of this invention is to provide that a kind of thermal shock resistance is good, heat resistanceheat resistant is preferably peeled off and a kind of main trough of blast furnace mould material of structure spalling, long service life.
Above-mentioned technical purpose of the present invention is achieved by the following technical programs: a kind of greater than 2500m
3The main trough of blast furnace mould material, it comprises the component of following parts by weight: plate diamond spar 50-55, zirconium white hollow ball 1-8, zirconium silicate 3-10, gahnite powder 10-25, carbon composite 10-15, alumina powder 3-10, metallic silicon power 1-2; Add tripoly phosphate sodium STPP 0.1-0.2, metallic aluminium powder 0.05-0.2, silicon dioxide gel suspension 4-10.
Described a kind of greater than 2500m
3The main trough of blast furnace mould material is characterized in that: the quality index of described plate diamond spar is: Al
2O
3〉=90%.
According to claim 1 a kind of greater than 2500m
3The main trough of blast furnace mould material is characterized in that: the quality index of described gahnite powder is: ZnAl
2O
4〉=90%.
According to claim 1 a kind of greater than 2500m
3The main trough of blast furnace mould material is characterized in that: the quality index of described carbon composite content is: SiC is 72-82%, and C is 18-28%.
According to claim 1 a kind of greater than 2500m
3The main trough of blast furnace mould material is characterized in that: the particle diameter of described metallic silicon power is 20～40nm.
According to claim 1 a kind of greater than 2500m
3The main trough of blast furnace mould material is characterized in that: the granularity of described zirconium silicate＜100 nm.
The advantage of mould material of the present invention is: (1) has added the gahnite powder, this material has good thermal shock stability, and acid resistance is good, and alkali resistance is strong, the problem that iron runner peels off can be solved preferably, the erosion of sulphur, phosphorus and the scum of molten iron the inside can be resisted simultaneously again iron runner.(2) iron runner silicon dioxide gel suspension is made the nano junction mixture, directly join in the compound, by generating nano mullite with the preferential reaction in of aluminum oxide powder, the inner pin styloid that forms of mould material, make this product thermal shock resistance height, have the microdilatancy structure simultaneously, infiltrate the phenomenon generation that destroys the structure influence product life thereby avoid causing shrinking molten iron in the mould material use.(3) thermal shock resistance of mould material, the heat retaining property of iron runner have further been improved by nano level silicic acid zirconium, the zirconium white hollow ball that adds better thermal shock resistance and resistance to fouling; In addition, the volume density of this product reduces, and can reduce material usage.Compare in conjunction with iron runner castable with cement, colloidal sol is few in conjunction with iron runner castable impurity, and is purer, the nano level mullite item that the easier generation performance of matrix is good, so in the high temperature use, anti-physics, chemical erosion ability are stronger, the life-span is longer.
A kind of preparation method of main trough of blast furnace comprises step 1, batching: weighing plate diamond spar 50-55 by weight, zirconium white hollow ball 1-8, zirconium silicate 3-10, gahnite powder 10-25, carbon composite 10-15, alumina powder 3-10, metallic silicon power 1-2.Step 2, construction: installation mold in the main iron hook that molten iron is flowed through, the batching that in mould, adds step 1, add the 0.1-0.2% tripoly phosphate sodium STPP that accounts for step 1 ingredients by weight per-cent again, the 0.05-0.2% metallic aluminium powder, the 4-10% silica sol liquid, after stirring 10-15min, the demoulding gets main trough of blast furnace behind the natural curing 1-2h.
Preparation method of the present invention exempts from baking, and preparation iron storage type casting house tamps through vibration when the prescription mould material combines construction with silica sol liquid, can come into operation immediately after the construction, use at blast furnace iron outlet groove, continuous tapping does not have repairing, iron influx reaches 170000 tons, long service life.
Embodiment
The prescription 1 of main trough of blast furnace mould material comprises the component of following parts by weight: plate diamond spar 50, zirconium white hollow ball 8, zirconium silicate 3, gahnite powder 25, carbon composite 10, alumina powder 3, metallic silicon power 1; Add tripoly phosphate sodium STPP 0.1, metallic aluminium powder 0.05, silicon dioxide gel suspension 4.
The prescription 2 of main trough of blast furnace mould material comprises the component of following parts by weight: plate diamond spar 50, zirconium white hollow ball 8, zirconium silicate 3, gahnite powder 25, carbon composite 10, alumina powder 3, metallic silicon power 1; Add tripoly phosphate sodium STPP 0.1, metallic aluminium powder 0.05, silicon dioxide gel suspension 6.
The prescription 3 of main trough of blast furnace mould material comprises the component of following parts by weight: plate diamond spar 50, zirconium white hollow ball 8, zirconium silicate 3, gahnite powder 25, carbon composite 10, alumina powder 3, metallic silicon power 1; Add tripoly phosphate sodium STPP 0.1, metallic aluminium powder 0.05, silicon dioxide gel suspension 10.
Embodiment one
Use prescription 1 preparation main trough of blast furnace: by prescription 1 batching and after stirrer stirs to mould material, add mould material in the mould of installing in the main iron hook that molten iron is flowed through, the demoulding gets main trough of blast furnace behind the natural curing 1h.
Embodiment two
Use prescription 2 preparation main trough of blast furnace: by prescription 2 batchings and after stirrer stirs to mould material, add mould material in the mould of installing in the main iron hook that molten iron is flowed through, the demoulding gets main trough of blast furnace behind the natural curing 1h.
Embodiment three
Use prescription 3 preparation main trough of blast furnace: by prescription 3 batchings and after stirrer stirs to mould material, add mould material in the mould of installing in the main iron hook that molten iron is flowed through, the demoulding gets main trough of blast furnace behind the natural curing 2h.Specific targets see the following form:
This specific embodiment only is an explanation of the invention; it is not a limitation of the present invention; those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this specification sheets, but as long as all are subjected to the protection of patent law in claim scope of the present invention.
Claims (6)
1. one kind greater than 2500m
3The main trough of blast furnace mould material, described mould material is by plate diamond spar, zirconium white hollow ball, zirconium silicate, gahnite powder, carbon composite, alumina powder, metallic silicon power, add tripoly phosphate sodium STPP, metallic aluminium powder, silicon dioxide gel suspension composition, it is characterized in that: the component that comprises following parts by weight: plate diamond spar 50-55, zirconium white hollow ball 1-8, zirconium silicate 3-10, gahnite powder 10-25, carbon composite 10-15, alumina powder 3-10, metallic silicon power 1-2; Add tripoly phosphate sodium STPP 0.1-0.2, metallic aluminium powder 0.05-0.2, silicon dioxide gel suspension 4-10.
2. according to claim 1 a kind of greater than 2500m
3The main trough of blast furnace mould material is characterized in that: the quality index of described plate diamond spar is: Al
2O
3〉=90%.
3. according to claim 1 a kind of greater than 2500m
3The main trough of blast furnace mould material is characterized in that: the quality index of described gahnite powder is: ZnAl
2O
4〉=90%.
4. according to claim 1 a kind of greater than 2500m
3The main trough of blast furnace mould material is characterized in that: the quality index of described carbon composite content is: SiC is 72-82%, and C is 18-28%.
5. according to claim 1 a kind of greater than 2500m
3The main trough of blast furnace mould material is characterized in that: the particle diameter of described metallic silicon power is 20～40nm.
6. according to claim 1 a kind of greater than 2500m
3The main trough of blast furnace mould material is characterized in that: the granularity of described zirconium silicate＜100 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210281186 CN102746012B (en) | 2012-08-09 | 2012-08-09 | Castable for major iron runner of blast furnace larger than 2500m<3> |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210281186 CN102746012B (en) | 2012-08-09 | 2012-08-09 | Castable for major iron runner of blast furnace larger than 2500m<3> |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102746012A CN102746012A (en) | 2012-10-24 |
| CN102746012B true CN102746012B (en) | 2013-07-31 |
Family
ID=47026577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210281186 Expired - Fee Related CN102746012B (en) | 2012-08-09 | 2012-08-09 | Castable for major iron runner of blast furnace larger than 2500m<3> |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102746012B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755377B (en) * | 2014-02-14 | 2015-08-05 | 重庆广播电视大学 | A kind of 850m 3blast furnace props up iron runner castable |
| CN103803996B (en) * | 2014-02-14 | 2015-06-10 | 万潇熠 | Large blast furnace main iron runner castable |
| CN103755376B (en) * | 2014-02-14 | 2015-01-14 | 刘清华 | Main iron runner pouring material of 1080 m<3> blast furnace |
| CN104355646B (en) * | 2014-12-01 | 2016-01-13 | 重庆可基混凝土有限公司 | A kind of cement kiln outlet dedicated pouring material |
| CN105016756B (en) * | 2015-08-14 | 2017-09-29 | 武汉科技大学 | A kind of aluminum-carbon refractory material and preparation method thereof |
| CN106882969A (en) * | 2017-02-15 | 2017-06-23 | 辽宁科技大学 | A kind of foundry ladle aluminum-silicon carbide brick containing gahnite and preparation method thereof |
| CN113979758A (en) * | 2021-10-25 | 2022-01-28 | 安徽瑞泰新材料科技有限公司 | Spinel refractory material for cement kiln |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001114571A (en) * | 1999-10-12 | 2001-04-24 | Kurosaki Harima Corp | Castable refractory for trough of blast furnace |
| CN101475390A (en) * | 2009-01-16 | 2009-07-08 | 张命荣 | Al2O3/ZrO2 refractory casting material and using method thereof |
| CN101921132A (en) * | 2010-09-25 | 2010-12-22 | 郑州九环科贸有限公司 | Lining patching material of iron-smelting blast furnace |
| CN102101782A (en) * | 2011-02-22 | 2011-06-22 | 佘成其 | Main iron runner pouring material |
| JP5070249B2 (en) * | 2002-05-24 | 2012-11-07 | バクスター・インターナショナル・インコーポレイテッド | Fluid pump, valve and heating system, method and apparatus for automatic dialysis equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0570249A (en) * | 1991-09-13 | 1993-03-23 | Kawasaki Refract Co Ltd | Monolithic refractory for blast-furnace molten iron runner |
-
2012
- 2012-08-09 CN CN 201210281186 patent/CN102746012B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001114571A (en) * | 1999-10-12 | 2001-04-24 | Kurosaki Harima Corp | Castable refractory for trough of blast furnace |
| JP5070249B2 (en) * | 2002-05-24 | 2012-11-07 | バクスター・インターナショナル・インコーポレイテッド | Fluid pump, valve and heating system, method and apparatus for automatic dialysis equipment |
| CN101475390A (en) * | 2009-01-16 | 2009-07-08 | 张命荣 | Al2O3/ZrO2 refractory casting material and using method thereof |
| CN101921132A (en) * | 2010-09-25 | 2010-12-22 | 郑州九环科贸有限公司 | Lining patching material of iron-smelting blast furnace |
| CN102101782A (en) * | 2011-02-22 | 2011-06-22 | 佘成其 | Main iron runner pouring material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102746012A (en) | 2012-10-24 |
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Owner name: JIANGSU DAOJUE NEW ENERGY AUTOMOBILE INDUSTRY CO., Free format text: FORMER OWNER: SHAN GUOQIANG Effective date: 20131111 |
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Effective date of registration: 20131111 Address after: 225200 Jiangsu Province, Yangzhou District of Jiangdu city science and Technology Park Fan Chuan Zhen Patentee after: Jiangsu Daojue Grand New Energy Vehicle Co., Ltd. Address before: 313100, Huzhou, Zhejiang, Changxing County Province, pheasant Town, emerging industrial park, No. 22, Pheasant Road Patentee before: Shan Guoqiang |
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