CN101857445A - Anhydrous stemming for blast furnace - Google Patents
Anhydrous stemming for blast furnace Download PDFInfo
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- CN101857445A CN101857445A CN 201010179061 CN201010179061A CN101857445A CN 101857445 A CN101857445 A CN 101857445A CN 201010179061 CN201010179061 CN 201010179061 CN 201010179061 A CN201010179061 A CN 201010179061A CN 101857445 A CN101857445 A CN 101857445A
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Abstract
The invention relates to an anhydrous stemming for a blast furnace. The anhydrous stemming is prepared from the following raw materials in percentages by weight: 30-40 percent of high-alumina bauxite, 10-15 percent of high-purity silicon carbide, 20-25 percent of soft clay, 10-25 percent of carbonaceous material, 5-15 percent of submicron powder, 15-25 percent of binding agent, and additionally silicon metal powder addictives accounting for 1-3 percent of the total weight of the raw materials. The anhydrous stemming has the advantages of favorable high-temperature fire performance, linearity change ratio of lower than 0.3 percent under the condition of 1400 DEG C*2h, breaking strength of more than or equal to 10MPa, high intensity, slag-iron resistant scouring, easy sintering, excellent work performance, less pollution and low production cost, and is beneficial to environment protection as well as popularization and application.
Description
One, technical field:
The present invention relates to a kind of blast furnace refractory materials, belong to metallurgical technology field, particularly relate to a kind of anhydrous stemming for blast furnace.
Two, background technology:
The Chinese large-sized blast furnace generally is provided with an accident cinder notch and one～four iron notch, and the slag iron amount of iron notch discharge every day is a lot.Water stemming material because volume density is little, sintering character is poor, the sintering shrinkage height, easily crack, shortcoming such as the iron of anti-slag erosion performance difference and be difficult to satisfy the demand, this just requires to use anhydrous stemming.Anhydrous stemming is main raw material with corundum, silicon carbide in conjunction with silicon nitride, coke powder, bonding clay etc. generally, simultaneously with addition of different admixtures, makes wedding agent with carbolineum, washing oil or tar.This stemming adopts the high-quality high pure raw material, and its anti-scouring is functional, can make the iron mouth time lengthening of tapping a blast furnace, and reduces the number of casts, is widely used on the various blast furnaces.But problem is that this stemming environmental pollution is bigger, a large amount of obnoxious flavoures of can overflowing in the production, and it is healthy influence the operator, and under the winter cold conditions, product easily hardens, and horse summer value is low, must toast, and make troubles to operation, and its production cost is higher.
Patent 03117339.x discloses a kind of anhydrous stemming for blast furnace, with brown corundum, mullite, coke powder, clay, silicon carbide, sericite, pitch, carbolineum etc. is raw material, this stemming resistance to elevated temperatures, cohesiveness are all better, but its production cost is higher, and easily contaminate environment is difficult to satisfy need of industrial production.
Three, summary of the invention:
The technical problem to be solved in the present invention: overcome the deficiencies in the prior art, provide a kind of intensity height, the iron of anti-the slag to wash away, pollute few environment-friendly type anhydrous stemming for blast furnace.
Technical scheme of the present invention:
A kind of anhydrous stemming for blast furnace is made by following raw materials by weight percent, alumine 30～40%, high-purity silicon carbide 10～15%, soft clay 20～25%, carbon materials 10～25%, super-fine powder 5～15%, wedding agent 15～25% adds the metallic silicon power additive that accounts for above-mentioned raw materials gross weight 1～3%.
The screening formulation of anhydrous stemming is: alumine 30～35%, high-purity silicon carbide 12～15%, soft clay 20～25%, carbon materials 10～15%, super-fine powder 5～10%, wedding agent 18～22%.
Described super-fine powder is Al
2O
3, SiC mixture, the two weight ratio 1: 3～4, super-fine powder is crossed 325 mesh sieves.
Described high-purity silicon carbide purity is more than 97%; Described metallic silicon power granularity requirements is crossed 325 mesh sieves; Described carbon materials is graphite, pitch or metallurgical coke; Described wedding agent is a coal-tar middle oil.
Positive beneficial effect of the present invention:
1. anhydrous stemming for blast furnace of the present invention, compositions such as alumine, high-purity silicon carbide, super-fine powder in raw material, have been introduced, improved the high-temperature flame-proof performance of product greatly, the line velocity of variation of product is little, be lower than 0.3% at 1400 ℃ of x2h conditions velocity of variation that rolls off the production line, folding strength 〉=10MPa, intensity height, the iron of anti-the slag wash away, and are easy to sintering.The specific performance index sees Table 2.
2. anhydrous stemming for blast furnace of the present invention is difficult for air-dry, sclerosis, and the horse summer value of product does not reduce under cold conditions, and transaction capabilities is good.
3. anhydrous stemming for blast furnace consumption of the present invention is few, can effectively stablize the iron mouth degree of depth, guarantees that the molten iron flow velocity is even, goes out clean slag iron.Opening can block up to such an extent that live easily, can not produce the big stream accident of running; Pollute and lack, help environment protection, help reducing working strength of workers.
4. anhydrous stemming for blast furnace of the present invention, technology is simple, and cost is low, helps applying, and has better economic and social benefit.
Four, embodiment:
Illustrate anhydrous stemming for blast furnace of the present invention below.
Embodiment 1: anhydrous stemming for blast furnace, and composition of raw materials sees Table 1, is unit with the weight percent, alumine 30%, high-purity silicon carbide 10%, soft clay 25%, carbon materials 10%, super-fine powder 10%, wedding agent coal-tar middle oil 15%; Add the metallic silicon power additive (being admixture) that accounts for above-mentioned raw materials gross weight 2%.
Wherein high-purity silicon carbide purity is more than 97%, and granularity requirements is crossed 200 mesh sieves; Super-fine powder is Al
2O
3, SiC mixture, the ratio of mixture of the two 1: 3～4, the super-fine powder granularity requirements is crossed 325 mesh sieves, SiC purity is more than 97%; Described carbon materials is a graphite; The metallic silicon power granularity requirements is crossed 325 mesh sieves.
Production method: each raw material of weighing, stir after the mixing, plastic cloth covers, sealing, the Sleepy material, make its abundant ageing after, through the extrusion molding of stemming shaper, the plastic cloth tube of packing into packs.
Embodiment 2～15: the anhydrous stemming composition of raw materials sees Table 1, and the granularity requirements of raw material and production method no longer repeat with embodiment 1.
Carbon materials in the embodiment of the invention is a graphite, and also available pitch or metallurgical coke substitute.
Table 1: the anhydrous stemming for blast furnace composition of each embodiment (by weight percentage, %).
Table 2: the performance index of product in the embodiment of the invention
| Sequence number | Test item | Stemming of the present invention | Like product |
| ??1 | Volume density (g/cm 3) | ??≥2 | ??≥1.6 |
| ??2 | 1400 ℃ of X2h of line velocity of variation (%) | ??±0.3 | ??±0.5 |
| Sequence number | Test item | Stemming of the present invention | Like product |
| ??3 | 1400 ℃ of X2h of apparent porosity (%) | ??≤20 | ??≥20 |
| ??4 | 1400 ℃ of X2h of folding strength (MPa) | ??≥10 | ??≥6 |
Claims (7)
1. anhydrous stemming for blast furnace, it is characterized in that: this anhydrous stemming is made by following raw materials by weight percent, alumine 30～40%, high-purity silicon carbide 10～15%, soft clay 20～25%, carbon materials 10～25%, super-fine powder 5～15%, wedding agent 15～25% adds the metallic silicon power additive that accounts for above-mentioned raw materials gross weight 1～3%.
2. anhydrous stemming for blast furnace according to claim 1 is characterized in that: wherein alumine 30～35%, high-purity silicon carbide 12～15%, soft clay 20～25%, carbon materials 10～15%, super-fine powder 5～10%, wedding agent 18～22%.
3. anhydrous stemming for blast furnace according to claim 1 and 2 is characterized in that: described super-fine powder is Al
2O
3, SiC mixture, the two weight ratio 1: 3～4, described super-fine powder is crossed 325 mesh sieves.
4. anhydrous stemming for blast furnace according to claim 1 and 2 is characterized in that: described high-purity silicon carbide purity is more than 97%.
5. anhydrous stemming for blast furnace according to claim 1 and 2 is characterized in that: described metallic silicon power granularity requirements is crossed 325 mesh sieves.
6. anhydrous stemming for blast furnace according to claim 1 and 2 is characterized in that: described carbon materials is graphite, pitch or metallurgical coke.
7. anhydrous stemming for blast furnace according to claim 1 and 2 is characterized in that: described wedding agent is a coal-tar middle oil.
Priority Applications (1)
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|---|---|---|---|
| CN2010101790610A CN101857445B (en) | 2010-05-21 | 2010-05-21 | Anhydrous stemming for blast furnace |
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| CN2010101790610A CN101857445B (en) | 2010-05-21 | 2010-05-21 | Anhydrous stemming for blast furnace |
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| CN101857445A true CN101857445A (en) | 2010-10-13 |
| CN101857445B CN101857445B (en) | 2012-07-25 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020481A (en) * | 2011-01-04 | 2011-04-20 | 马鞍山钢铁股份有限公司 | Novel anhydrous stemming for blast furnace |
| CN102584284A (en) * | 2012-01-30 | 2012-07-18 | 重庆生竹科技发展有限公司 | Anhydrous stemming for blast furnace |
| CN102617157A (en) * | 2012-02-22 | 2012-08-01 | 北京首钢耐材炉料有限公司 | Stemming and method for preparing same |
| CN103265298A (en) * | 2013-04-17 | 2013-08-28 | 孝义市和中兴矿产有限公司 | Processing method of environmental-friendly and high-intensity anhydrous stemming |
| CN103360096A (en) * | 2013-07-31 | 2013-10-23 | 武汉钢铁(集团)公司 | Tap hole stemming for large-scale blast furnace and preparation method |
| CN103880444A (en) * | 2013-04-15 | 2014-06-25 | 渑池金华新材料有限公司 | Environment-friendly anhydrous tamping plug and preparation method thereof |
| CN106699206A (en) * | 2016-12-26 | 2017-05-24 | 中国京冶工程技术有限公司 | Anhydrous stemming for large and medium sized blast furnace and preparation method of anhydrous stemming |
| CN107353021A (en) * | 2017-07-18 | 2017-11-17 | 偃师市民兴炉料有限公司 | A kind of preparation technology of high intensity environmental-protection furnace stemming |
| CN110243185A (en) * | 2019-04-23 | 2019-09-17 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of stifled eye material for high-silicon alloy mineral hot furnace |
| CN111689782A (en) * | 2020-06-10 | 2020-09-22 | 天津炜润达新材料科技有限公司 | Anhydrous stemming for blast furnace |
| CN113149623A (en) * | 2021-01-27 | 2021-07-23 | 河南宏宇新材料科技有限公司 | Environment-friendly high-strength anhydrous stemming and preparation method thereof |
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| CN1523120A (en) * | 2003-02-21 | 2004-08-25 | 昆明钢铁集团有限责任公司炼铁厂 | Waterless stemming for blast furnace |
| CN1544660A (en) * | 2003-11-24 | 2004-11-10 | 北京科技大学 | Al*O*-SiC-C system waterless taphole mix containing ferrosilicon nitride |
| CN1641046A (en) * | 2004-01-14 | 2005-07-20 | 高兴奎 | Anhydrous stemming of iron notch for blast furnace |
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| CN1840507A (en) * | 2005-12-22 | 2006-10-04 | 濮阳濮耐高温材料有限公司 | Waterless taphole mix for blast furnace taphole |
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2010
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|---|---|---|---|---|
| CN1523120A (en) * | 2003-02-21 | 2004-08-25 | 昆明钢铁集团有限责任公司炼铁厂 | Waterless stemming for blast furnace |
| CN1544660A (en) * | 2003-11-24 | 2004-11-10 | 北京科技大学 | Al*O*-SiC-C system waterless taphole mix containing ferrosilicon nitride |
| CN1641046A (en) * | 2004-01-14 | 2005-07-20 | 高兴奎 | Anhydrous stemming of iron notch for blast furnace |
| CN1840507A (en) * | 2005-12-22 | 2006-10-04 | 濮阳濮耐高温材料有限公司 | Waterless taphole mix for blast furnace taphole |
| CN1810723A (en) * | 2006-02-24 | 2006-08-02 | 河北理工大学 | No-water stemming material for blast furnace taphole and its prepn |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020481A (en) * | 2011-01-04 | 2011-04-20 | 马鞍山钢铁股份有限公司 | Novel anhydrous stemming for blast furnace |
| CN102584284A (en) * | 2012-01-30 | 2012-07-18 | 重庆生竹科技发展有限公司 | Anhydrous stemming for blast furnace |
| CN102617157A (en) * | 2012-02-22 | 2012-08-01 | 北京首钢耐材炉料有限公司 | Stemming and method for preparing same |
| CN103880444A (en) * | 2013-04-15 | 2014-06-25 | 渑池金华新材料有限公司 | Environment-friendly anhydrous tamping plug and preparation method thereof |
| CN103880444B (en) * | 2013-04-15 | 2016-05-18 | 渑池金华新材料有限公司 | A kind of environment-friendly type anhydrous stemming and preparation method thereof |
| CN103265298B (en) * | 2013-04-17 | 2014-08-13 | 孝义市和中兴矿产有限公司 | Processing method of environmental-friendly and high-intensity anhydrous stemming |
| CN103265298A (en) * | 2013-04-17 | 2013-08-28 | 孝义市和中兴矿产有限公司 | Processing method of environmental-friendly and high-intensity anhydrous stemming |
| CN103360096A (en) * | 2013-07-31 | 2013-10-23 | 武汉钢铁(集团)公司 | Tap hole stemming for large-scale blast furnace and preparation method |
| CN106699206A (en) * | 2016-12-26 | 2017-05-24 | 中国京冶工程技术有限公司 | Anhydrous stemming for large and medium sized blast furnace and preparation method of anhydrous stemming |
| CN106699206B (en) * | 2016-12-26 | 2021-01-05 | 中国京冶工程技术有限公司 | Large and medium-sized blast furnace anhydrous stemming and preparation method thereof |
| CN107353021A (en) * | 2017-07-18 | 2017-11-17 | 偃师市民兴炉料有限公司 | A kind of preparation technology of high intensity environmental-protection furnace stemming |
| CN110243185A (en) * | 2019-04-23 | 2019-09-17 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of stifled eye material for high-silicon alloy mineral hot furnace |
| CN110243185B (en) * | 2019-04-23 | 2021-02-05 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | Hole plugging material for high-silicon alloy submerged arc furnace |
| CN111689782A (en) * | 2020-06-10 | 2020-09-22 | 天津炜润达新材料科技有限公司 | Anhydrous stemming for blast furnace |
| CN113149623A (en) * | 2021-01-27 | 2021-07-23 | 河南宏宇新材料科技有限公司 | Environment-friendly high-strength anhydrous stemming and preparation method thereof |
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|---|---|
| CN101857445B (en) | 2012-07-25 |
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