CN101830714A - Alumina-silicon nitride iron compound abrasive brick for large-size cement kiln and manufacture method thereof - Google Patents
Alumina-silicon nitride iron compound abrasive brick for large-size cement kiln and manufacture method thereof Download PDFInfo
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- CN101830714A CN101830714A CN 201010161702 CN201010161702A CN101830714A CN 101830714 A CN101830714 A CN 101830714A CN 201010161702 CN201010161702 CN 201010161702 CN 201010161702 A CN201010161702 A CN 201010161702A CN 101830714 A CN101830714 A CN 101830714A
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- silicon nitride
- alumina
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Abstract
The invention relates to an alumina-silicon nitride iron compound abrasive brick for a large-size cement kiln and a manufacture method thereof, belonging to the field of refractory materials. The alumina-silicon nitride iron compound abrasive brick is characterized in that superfine alumina clinker, silicon carbide and silicon nitride iron are used as main raw materials; the raw materials comprises the following components in percent by weight: 65-80 percent of the superfine alumina smaller than or equal to 5mm with an Al2O3 content not smaller than 85 percent, 5-15 percent of the silicon carbide smaller than or equal to 1.5mm with an SiC content not smaller than 90 percent, 1-15 percent of the silicon nitride iron smaller than or equal to 0.088mm with an Fe-Si3N4 content not smaller than 98 percent and 4-8 percent of bonding clay smaller than or equal to 0.088mm; 0.2-0.7 percent of industrial dextrin or lignin and 2-5 percent of water are added to the mixed raw materials for mulling, pressing and drying; and firing is carried out at 1,300-1,450 DEG C to prepare the alumina-silicon nitride iron compound abrasive brick. The product is suitable for various specifications of cement kilns, has obvious heat insulation effect, high abrasive resistance and long running time reaching longer than 1.5 years and has extremely positive effect on improving the running rate of a large-size rotary cement kiln, and the fired alumina-silicon nitride iron compound abrasive brick has simple process and low cost.
Description
Technical field:
The invention belongs to fire resisting material field, relate to a kind of large-size cement kiln alumina-silicon nitride iron compound abrasive brick and manufacture method thereof.
Background technology:
Along with the continual renovation of technology of producing cement, manufacture of cement major equipment rotary kiln to the longevityization development of maximizing, especially increases output, improves the quality, and energy efficient has become the key that increases benefit in the production management.At positions such as the transitional zone of large-scale cement rotary kiln, cooling zones, traditional refractory materials can't satisfy its requirement, mostly adopts spinel brick in the large-size cement kiln at present, its cost height, and the heat conduction height, wear-resisting poor, work-ing life is low, cost performance low (about 6 months).
Summary of the invention:
The present invention seeks to solve the spinel brick that adopts in the present large-size cement kiln, cost height, heat conduction height, wear-resisting poor, the problem that work-ing life is low, cost performance is low
The invention provides the manufacture method of a kind of large-size cement kiln of high performance-price ratio with alumina-silicon nitride iron compound abrasive brick, is the refractory brick that adding industrial dextrin (or xylogen), hydraulic pressure system sintering form in high grade bauxite, ferro-silicon nitride, silicon carbide, bonding clay.The weight proportion that it is characterized in that each component is:
High grade bauxite≤5mm Al
2O
3〉=85% 65-80%
Silicon carbide≤1.5mm SiC 〉=90% 5-15%
Ferro-silicon nitride≤0.088mm Fe-Si
3N
4〉=98% 1-15%
Bonding clay≤0.088mm Al
2O
3〉=36% 4-8%
Industry dextrin or xylogen 0.2-0.7%
Water 2-5%
With above-mentioned raw materials on request proportioning mix, in mixing roll, make pug, at the forming under the pressure of 〉=400T, adobe is burnt till in 1300-1450 ℃ in tunnel furnace or shuttle kiln after the moulding.
Preparation process is as follows:
1., batching :≤5mm high grade bauxite (Al
2O
3〉=85%) 65-80% ,≤1.5mm silicon carbide (SiC 〉=90%) 5-15% ,≤0.088mm ferro-silicon nitride (Fe-Si
3N
4〉=98%) 1-15% ,≤0.088mm bonding clay 4%-8%, industrial dextrin 0.2-0.7% or xylogen 0.2-0.7%;
2., mixing: mixing order is: poured high grade bauxite and silicon carbide into mixer dried mixed 3～5 minutes earlier, then pour water into, batch mixing is 2～3 minutes again, pours blend fine powder (ferro-silicon nitride, clay, industrial dextrin or xylogen) into mixing again 10～15 minutes at last;
3., moulding: wet feed ageing mixture 1～2 compression moulding as a child that mixes, moulding press tonnage 〉=400T;
4., drying: more than 16 hours, dry kiln is gone into car mouth temperature less than 70 ℃ in the dry kiln drying, and dry top temperature temperature is controlled at 110～150 ℃;
5., burn till: burn till on hyperthermia tunnel Kiln or shuttle kiln, 1300～1450 ℃ of firing temperatures at high temperature are incubated 4～6 hours, and total firing time was at 60～100 hours.
Alumina-silicon nitride iron compound abrasive brick is used for the large-scale cement rotary kiln transitional zone.
This product is applicable to all size cement kiln usefulness, and the heat-insulating and energy-saving effect is very obvious, and has high-wearing feature, and long operational time can reach more than 1.5 years, and the operation factor that improves large-scale cement rotary kiln has been played very positive effect.Alumina-the silicon nitride iron compound abrasive brick that is fired into, the simple cost of technology is low.
Embodiment:
Embodiment 1:
Large-size cement kiln alumina-silicon nitride compound abrasive brick, the weight proportion of each component is:
High grade bauxite≤5mm Al
2O
3〉=85% 71.8%
Silicon carbide≤1.5mm SiC 〉=90% 15%
Ferro-silicon nitride≤0.088mm Fe-Si
3N
4〉=98% 5%
Bonding clay≤0.088mm Al
2O
3〉=36% 5%
Wedding agent:
Industry dextrin 0.7%
Water 2.5%
Require proportioning to mix above-mentioned raw materials peace, make pug in mixing roll, at the forming under the pressure of 〉=400T, adobe is burnt till in 1300-1450 ℃ in tunnel furnace or shuttle kiln after the moulding.
Embodiment 2:
Large-size cement kiln alumina-silicon nitride compound abrasive brick, the weight proportion of each component is:
High grade bauxite≤5mm Al
2O
3〉=85% 71.8%
Silicon carbide≤1.5mm SiC 〉=90% 10%
Ferro-silicon nitride≤0.088mm Fe-Si
3N
4〉=98% 10%
Bonding clay≤0.088mm Al
2O
3〉=36% 5%
Wedding agent:
Industry dextrin 0.7%
Water 2.5%
Require proportioning to mix above-mentioned raw materials peace, make pug in mixing roll, at the forming under the pressure of 〉=400T, adobe is burnt till in 1300-1450 ℃ in tunnel furnace or shuttle kiln after the moulding.
Embodiment 3:
Large-size cement kiln alumina-silicon nitride compound abrasive brick, the weight proportion of each component is:
High grade bauxite≤5mm Al
2O
3〉=85% 71.8%
Silicon carbide≤1.5mm SiC 〉=90% 5%
Ferro-silicon nitride≤0.088mm Fe-Si
3N
4〉=98% 15%
Bonding clay≤0.088mm Al
2O
3〉=36% 5%
Wedding agent:
Xylogen 0.7%
Water 2.5%
Require proportioning to mix above-mentioned raw materials peace, make pug in mixing roll, at the forming under the pressure of 〉=400T, adobe is burnt till in 1300-1450 ℃ in tunnel furnace or shuttle kiln after the moulding.
Claims (3)
1. a large-size cement kiln is characterized in that with alumina-silicon nitride iron compound abrasive brick with high grade bauxite grog and silicon carbide, silicon nitride be main raw material, and raw materials quality per-cent is :≤5mm Al
2O
3〉=85% high grade bauxite 65-80% ,≤the silicon carbide 5-15% of 1.5mm SiC 〉=90% ,≤0.088mm Fe-Si
3N
4〉=98% ferro-silicon nitride 1-15% ,≤0.088mm bonding clay 4-8%, mixed raw material adds 0.2-0.7% industry dextrin or xylogen and 2-5% water mixes, compacting, drying, makes alumina-silicon nitride compound abrasive brick at 1300-1450 ℃ after burning till.
2. a kind of large-size cement kiln as claimed in claim 1 manufacture method of alumina-silicon nitride iron compound abrasive brick is characterized in that preparation process is as follows:
1., batching :≤5mm high grade bauxite 65-80% ,≤1.5mm silicon carbide 5-15% ,≤0.088mm ferro-silicon nitride 1-15% ,≤0.088mm bonding clay 4%-8%, industrial dextrin 0.2-0.7% or xylogen 0.2-0.7%;
2., mixing: mixing order is: poured high grade bauxite and silicon carbide into mixer dried mixed 3～5 minutes earlier, then pour water into, batch mixing is 2～3 minutes again, pours blend fine powder (ferro-silicon nitride, clay, industrial dextrin or xylogen) into mixing again 10～15 minutes at last;
3., moulding: wet feed ageing mixture 1～2 compression moulding as a child that mixes, moulding press tonnage 〉=400T;
4., drying: more than 16 hours, dry kiln is gone into car mouth temperature less than 70 ℃ in the dry kiln drying, and dry top temperature temperature is controlled at 110～150 ℃;
5., burn till: burn till on hyperthermia tunnel Kiln or shuttle kiln, 1300～1450 ℃ of firing temperatures at high temperature are incubated 4～6 hours, and total firing time was at 60～100 hours.
3. a kind of large-size cement kiln as claimed in claim 1 is characterized in that with alumina-silicon nitride iron compound abrasive brick alumina-silicon nitride compound abrasive brick is used for the large-scale cement rotary kiln transitional zone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010161702 CN101830714A (en) | 2010-04-27 | 2010-04-27 | Alumina-silicon nitride iron compound abrasive brick for large-size cement kiln and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010161702 CN101830714A (en) | 2010-04-27 | 2010-04-27 | Alumina-silicon nitride iron compound abrasive brick for large-size cement kiln and manufacture method thereof |
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| CN101830714A true CN101830714A (en) | 2010-09-15 |
Family
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529494A (en) * | 2015-01-21 | 2015-04-22 | 北京科技大学 | Ferro-silicon nitride/alumina-chrome slag refractory matter for cement kiln transition zone and preparation method of refractory matter |
| CN104944974A (en) * | 2015-05-26 | 2015-09-30 | 柳州市亿廷贸易有限责任公司 | Preparation method of refractory brick for hot-blast furnaces |
| CN114105617A (en) * | 2021-12-02 | 2022-03-01 | 郑州荣盛窑炉耐火材料有限公司 | Torsion-resistant and wear-resistant refractory brick for cement rotary kiln and preparation method thereof |
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| CN1944345A (en) * | 2006-10-27 | 2007-04-11 | 江苏君耀耐磨耐火材料有限公司 | Silicon mullite red brick for large cement kiln and its producing method |
| JP2008019105A (en) * | 2006-07-11 | 2008-01-31 | Ibiden Co Ltd | Composite ceramic powder, its producing method, and monolithic refractory |
| CN101239830A (en) * | 2008-03-19 | 2008-08-13 | 巩义市金岭耐火材料有限公司 | Low-temperature burning high-aluminum refractory brick and preparation method thereof |
| CN101602609A (en) * | 2009-07-24 | 2009-12-16 | 中国地质大学（北京） | A kind of Fe-Si for preparing 3N 4The method of refractory raw material |
-
2010
- 2010-04-27 CN CN 201010161702 patent/CN101830714A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008019105A (en) * | 2006-07-11 | 2008-01-31 | Ibiden Co Ltd | Composite ceramic powder, its producing method, and monolithic refractory |
| CN1944345A (en) * | 2006-10-27 | 2007-04-11 | 江苏君耀耐磨耐火材料有限公司 | Silicon mullite red brick for large cement kiln and its producing method |
| CN101239830A (en) * | 2008-03-19 | 2008-08-13 | 巩义市金岭耐火材料有限公司 | Low-temperature burning high-aluminum refractory brick and preparation method thereof |
| CN101602609A (en) * | 2009-07-24 | 2009-12-16 | 中国地质大学（北京） | A kind of Fe-Si for preparing 3N 4The method of refractory raw material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529494A (en) * | 2015-01-21 | 2015-04-22 | 北京科技大学 | Ferro-silicon nitride/alumina-chrome slag refractory matter for cement kiln transition zone and preparation method of refractory matter |
| CN104529494B (en) * | 2015-01-21 | 2017-01-04 | 北京科技大学 | Transition band of cement kiln ferro-silicon nitride-aluminum chromium slag refractory material and preparation method |
| CN104944974A (en) * | 2015-05-26 | 2015-09-30 | 柳州市亿廷贸易有限责任公司 | Preparation method of refractory brick for hot-blast furnaces |
| CN114105617A (en) * | 2021-12-02 | 2022-03-01 | 郑州荣盛窑炉耐火材料有限公司 | Torsion-resistant and wear-resistant refractory brick for cement rotary kiln and preparation method thereof |
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Application publication date: 20100915 |