CN103539469A - Refractory castable for incinerator - Google Patents
Refractory castable for incinerator Download PDFInfo
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- CN103539469A CN103539469A CN201310515484.9A CN201310515484A CN103539469A CN 103539469 A CN103539469 A CN 103539469A CN 201310515484 A CN201310515484 A CN 201310515484A CN 103539469 A CN103539469 A CN 103539469A
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Abstract
The invention discloses a refractory castable for an incinerator, which comprises the following raw materials in percentage by weight: 40-50% of silicon carbide particles and fine powder, 5-10% of corundum particles and fine powder, 3-7% of aluminate cement, 2-4% of silicon micro powder, 1-5% of silicon nitride, 1-5% of boron carbide, 15-20% of magnesium-containing material, 5-10% of alumina micro powder and 0.1-0.2% of organic fiber. The refractory castable disclosed by the invention has the beneficial effects of high strength and good abrasion resistance, good volume stability and acid-base resistance, good thermal shock stability and good erosion resistance.
Description
Technical field
The invention belongs to technical field of refractory materials, relate in particular to a kind of incinerator refractory castable.
Background technology
Compare with qualitative refractory product, the unshape refractory that the refractory castable of take is representative has that technical process is short, production energy consumption and cost is low, easy to use, applied widely, globality and the advantage such as result of use is good, thereby worldwide obtained developing rapidly, its proportion shared in whole refractory materials is more and more higher.
Along with continuous increase and the rapid development of economy of world population, the quantity of municipal wastes and industrial waste sharply increases, and the environment of human survival is caused to serious harm.Therefore, the processing of rubbish is a problem demanding prompt solution.Traditional method of burying rubbish not only takes up room, and causes the severe contamination of underground water.The method for the treatment of refuse at present has: biological treatment, thermal treatment etc.After the method for the various refuse treatments of comparative studies, show also do not have at present any technology can replace burning method, this method has that the capacity of subtracting is large, to process timely, innoxious degree high and can reclaim the features such as heat energy.
Yet because rubbish variation causes combustion atmosphere unstable, existing acid atmosphere, has again alkaline atmosphere, thereby the refractory materials of exploitation excellent performance has become the task of top priority.The requirement of incinerator to refractory materials: (1) high strength and good wear resistance, to resist the wearing and tearing of solid materials and washing away of hot gas flow.(2) good volume stability and acid-fast alkali-proof, with the erosion of acid-basicity atmosphere in reaistance furnace.(3) good thermal shocking stability, to resist the destruction of the variation of furnace temperature to material.(4) good corrosion resistance, causes that to avoid corroding furnace lining bursts apart.Conventional is widely used in incinerator furnace lining containing chromium refractory materials with its excellent slag resistance, but its high density and intensity cause the poor toughness of material, and hexavalent chromium polluted and national requirements for environmental protection is not inconsistent, therefore the resistance to material of chromium matter will be replaced gradually.
Summary of the invention
In view of this, the deficiency existing for the above prior art, provides a kind of incinerator refractory castable that possesses high strength and good wear resistance, good volume stability and acid-fast alkali-proof, good thermal shocking stability, good corrosion resistance.
A refractory castable, comprises silicon-carbide particle and fine powder, corundum in granules and fine powder, aluminate cement, silicon powder, silicon nitride, norbide, contains magnesium material, alumina powder and organic fibre.Wherein, the weight percent of above-mentioned each raw material is: silicon-carbide particle and fine powder 40 ~ 50%, corundum in granules and fine powder 5 ~ 10%, aluminate cement 3 ~ 7%, silicon powder 2 ~ 4%, silicon nitride 1 ~ 5%, norbide 1 ~ 5%, containing magnesium material 15 ~ 20%, alumina powder 5 ~ 10% and organic fibre 0.1 ~ 0.2%.
The invention has the beneficial effects as follows: above-mentioned incinerator has the ability in the complicated atmosphere long term operation of redox with refractory castable; Compare with traditional magnesium chromia material, volume density is low, and kiln heat storage capacity is little, and kiln heating and cooling are fast, are convenient to furnace operation, also can not produce the secondary pollution with rear resistance to material simultaneously; Product has added norbide, thereby has protected carbofrax material not oxidized, has greatly improved product work-ing life in oxidizing atmosphere; Corundum in granules and fine powder, aluminate cement, silicon powder, silicon nitride, containing magnesium material, alumina powder and organic fibre under equal conditions, improve the over-all properties of material greatly.
Embodiment
The technical solution adopted in the present invention is by a certain proportion of silicon-carbide particle and fine powder, corundum in granules and fine powder, aluminate cement, silicon powder, silicon nitride, norbide, containing magnesium material, alumina powder and organic fibre, mixes and add after water, and ageing mixture makes the incinerator refractory castable that working-yard needs.Concretely:
A refractory castable, comprises silicon-carbide particle and fine powder, corundum in granules and fine powder, aluminate cement, silicon powder, silicon nitride, norbide, contains magnesium material, alumina powder and organic fibre.Wherein, the weight percent of above-mentioned each raw material is: silicon-carbide particle and fine powder 40 ~ 50%, corundum in granules and fine powder 5 ~ 10%, aluminate cement 3 ~ 7%, silicon powder 2 ~ 4%, silicon nitride 1 ~ 5%, norbide 1 ~ 5%, containing magnesium material 15 ~ 20%, alumina powder 5 ~ 10% and organic fibre 0.1 ~ 0.2%.
Further, described silicon-carbide particle and fine powder are comprised of 8 ~ 4mm silicon-carbide particle 10～20%, 4 ~ 3mm silicon-carbide particle 15～20%, 3 ~ 1mm silicon-carbide particle 10～20%, 1 ~ 0mm silicon-carbide particle 15～25% and carbide fine powder 15 ~ 25%, and wherein carbide fine powder granularity is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions; Described corundum in granules and fine powder are comprised of 9 ~ 6mm corundum in granules 10～20%, 6 ~ 4mm corundum in granules 15～20%, 4 ~ 1mm corundum in granules 10～20%, 1 ~ 0mm corundum in granules 15～25% and corundum fine powder 15 ~ 25% forms, and corundum fine powder granularity is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions;
Further, described containing magnesium material 15 ~ 20%, by forming containing magnesium granules material 5 ~ 8% and containing magnesium powder material 10 ~ 12%, wherein, containing magnesium granules material, be the mixing of 0.4 ~ 0.088mm, 0.3 ~ 0.074mm and 1 ~ 0mm granularity arbitrary proportion; Containing magnesium powder material, it is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions.
Below illustrate above-mentioned incinerator refractory castable:
Embodiment 1
A refractory castable, comprises silicon-carbide particle and fine powder, corundum in granules and fine powder, aluminate cement, silicon powder, silicon nitride, norbide, contains magnesium material, alumina powder and organic fibre.Wherein, the weight percent of above-mentioned each raw material is: silicon-carbide particle and fine powder 41%, corundum in granules and fine powder 10%, aluminate cement 5%, silicon powder 4%, silicon nitride 5%, norbide 5%, containing magnesium material 20%, alumina powder 9.9% and organic fibre 0.1%.Described silicon-carbide particle and fine powder are comprised of 8mm silicon-carbide particle 10～20%, 4 ~ 3mm silicon-carbide particle 15～20%, 3 ~ 1mm silicon-carbide particle 10～20%, 1 ~ 0mm silicon-carbide particle 15～25% and carbide fine powder 15 ~ 25%, and wherein carbide fine powder granularity is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions; Described corundum in granules and fine powder are comprised of 9 ~ 6mm corundum in granules 10～20%, 6 ~ 4mm corundum in granules 15～20%, 4 ~ 1mm corundum in granules 10～20%, 1 ~ 0mm corundum in granules 15～25% and corundum fine powder 15 ~ 25% forms, and corundum fine powder granularity is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions; Described containing magnesium material 15 ~ 20%, by forming containing magnesium granules material 5 ~ 8% and containing magnesium powder material 10 ~ 12%, wherein, containing magnesium granules material, be the mixing of 0.4 ~ 0.088mm, 0.3 ~ 0.074mm and 1 ~ 0mm granularity arbitrary proportion; Containing magnesium powder material, it is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions.
Its physical performance index is: after 110 ℃ * 24h dries, folding strength is 8 ~ 10MPa, and compressive strength is 80 ~ 100MPa; After 1100 ℃ * 3h high temperature reheating, the folding strength of sample is 10 ~ 35MPa, and compressive strength is 100 ~ 120MPa, and volume density is 2.7 ~ 3.0g/cm
3.
Embodiment 2
A refractory castable, comprises silicon-carbide particle and fine powder, corundum in granules and fine powder, aluminate cement, silicon powder, silicon nitride, norbide, contains magnesium material, alumina powder and organic fibre.Wherein, the weight percent of above-mentioned each raw material is: silicon-carbide particle and fine powder 40%, corundum in granules and fine powder 10%, aluminate cement 5%, silicon powder 4%, silicon nitride 5%, norbide 5%, containing magnesium material 20%, alumina powder 9.9% and organic fibre 0.1%.Silicon-carbide particle and fine powder 50%, corundum in granules and fine powder 8%, aluminate cement 7%, silicon powder 2%, silicon nitride 3%, norbide 1%, containing magnesium material 19%, alumina powder 9.8% and organic fibre 0.2%.Described silicon-carbide particle and fine powder are comprised of 8mm silicon-carbide particle 10～20%, 4 ~ 3mm silicon-carbide particle 15～20%, 3 ~ 1mm silicon-carbide particle 10～20%, 1 ~ 0mm silicon-carbide particle 15～25% and carbide fine powder 15 ~ 25%, and wherein carbide fine powder granularity is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions; Described corundum in granules and fine powder are comprised of 9 ~ 6mm corundum in granules 10～20%, 6 ~ 4mm corundum in granules 15～20%, 4 ~ 1mm corundum in granules 10～20%, 1 ~ 0mm corundum in granules 15～25% and corundum fine powder 15 ~ 25% forms, and corundum fine powder granularity is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions; Described containing magnesium material 15 ~ 20%, by forming containing magnesium granules material 5 ~ 8% and containing magnesium powder material 10 ~ 12%, wherein, containing magnesium granules material, be the mixing of 0.4 ~ 0.088mm, 0.3 ~ 0.074mm and 1 ~ 0mm granularity arbitrary proportion; Containing magnesium powder material, it is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions.
Its physical performance index is: after 110 ℃ * 24h dries, folding strength is 9 ~ 11MPa, and compressive strength is 90 ~ 110MPa; After 1100 ℃ * 3h high temperature reheating, the folding strength of sample is 11 ~ 40MPa, and compressive strength is 115 ~ 130MPa, and volume density is 2.7 ~ 3.1g/cm
3.
As described above, it is only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence of generally doing according to the present patent application the scope of the claims and invention description content changes and modifies, and all still remains within the scope of the patent.
Claims (3)
1. an incinerator refractory castable, is characterized in that: comprise silicon-carbide particle and fine powder, corundum in granules and fine powder, aluminate cement, silicon powder, silicon nitride, norbide, contain magnesium material, alumina powder and organic fibre; Wherein, the weight percent of above-mentioned each raw material is: silicon-carbide particle and fine powder 40 ~ 50%, corundum in granules and fine powder 5 ~ 10%, aluminate cement 3 ~ 7%, silicon powder 2 ~ 4%, silicon nitride 1 ~ 5%, norbide 1 ~ 5%, containing magnesium material 15 ~ 20%, alumina powder 5 ~ 10% and organic fibre 0.1 ~ 0.2%.
2. incinerator refractory castable according to claim 1, it is characterized in that: described silicon-carbide particle and fine powder are comprised of 8 ~ 4mm silicon-carbide particle 10～20%, 4 ~ 3mm silicon-carbide particle 15～20%, 3 ~ 1mm silicon-carbide particle 10～20%, 1 ~ 0mm silicon-carbide particle 15～25% and carbide fine powder 15 ~ 25%, wherein carbide fine powder granularity is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions; Described corundum in granules and fine powder are comprised of 9 ~ 6mm corundum in granules 10～20%, 6 ~ 4mm corundum in granules 15～20%, 4 ~ 1mm corundum in granules 10～20%, 1 ~ 0mm corundum in granules 15～25% and corundum fine powder 15 ~ 25% forms, and corundum fine powder granularity is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions.
3. incinerator refractory castable according to claim 1, it is characterized in that: described containing magnesium material 15 ~ 20%, by forming containing magnesium granules material 5 ~ 8% and containing magnesium powder material 10 ~ 12%, wherein, containing magnesium granules material, be the mixing of 0.4 ~ 0.088mm, 0.3 ~ 0.074mm and 1 ~ 0mm granularity arbitrary proportion; Containing magnesium powder material, it is the mixing of 120 orders, 180 orders, 200 orders, 320 orders, 325 order arbitrary proportions.
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| CN201310515484.9A CN103539469B (en) | 2013-10-29 | 2013-10-29 | Refractory castable for incinerator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311062A (en) * | 2014-10-09 | 2015-01-28 | 宁夏天纵泓光余热发电技术有限公司 | Acid and alkali resistant castable |
| CN105113705A (en) * | 2015-08-06 | 2015-12-02 | 安徽铭源新型建材科技有限公司 | Heat-insulating wear-resistant inner wallboard |
| CN105130470A (en) * | 2015-08-31 | 2015-12-09 | 中冶武汉冶金建筑研究院有限公司 | High-strength acid-resisting abrasion-resisting castable used for front end of blast furnace water granulated slag punching groove |
| CN105152676A (en) * | 2015-08-06 | 2015-12-16 | 安徽铭源新型建材科技有限公司 | High-performance heat-insulating inner wall board |
| CN115490486A (en) * | 2022-08-29 | 2022-12-20 | 河南好运祥耐材有限公司 | High-strength wear-resistant material for blast furnace slag runner |
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| CN102391007A (en) * | 2011-08-17 | 2012-03-28 | 通达耐火技术股份有限公司 | Silicon carbide brick for garbage incinerator and preparation method thereof |
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| CN102503464A (en) * | 2011-10-25 | 2012-06-20 | 浙江锦诚耐火材料有限公司 | Pouring material of silicon carbide |
| CN103113120A (en) * | 2011-11-17 | 2013-05-22 | 中冶武汉冶金建筑研究院有限公司 | Phosphate-combined iron runner spraying paint for hot-state repairing |
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2013
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| CN1450023A (en) * | 2003-05-09 | 2003-10-22 | 宜兴天霸非金属材料有限公司 | Anti-oxidation silica carbide pouring material |
| CN101302112A (en) * | 2008-06-20 | 2008-11-12 | 范圣良 | High-strength wear-resistant pouring material for aerial refuse incinerator |
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| CN102503464A (en) * | 2011-10-25 | 2012-06-20 | 浙江锦诚耐火材料有限公司 | Pouring material of silicon carbide |
| CN103113120A (en) * | 2011-11-17 | 2013-05-22 | 中冶武汉冶金建筑研究院有限公司 | Phosphate-combined iron runner spraying paint for hot-state repairing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311062A (en) * | 2014-10-09 | 2015-01-28 | 宁夏天纵泓光余热发电技术有限公司 | Acid and alkali resistant castable |
| CN105113705A (en) * | 2015-08-06 | 2015-12-02 | 安徽铭源新型建材科技有限公司 | Heat-insulating wear-resistant inner wallboard |
| CN105152676A (en) * | 2015-08-06 | 2015-12-16 | 安徽铭源新型建材科技有限公司 | High-performance heat-insulating inner wall board |
| CN105130470A (en) * | 2015-08-31 | 2015-12-09 | 中冶武汉冶金建筑研究院有限公司 | High-strength acid-resisting abrasion-resisting castable used for front end of blast furnace water granulated slag punching groove |
| CN115490486A (en) * | 2022-08-29 | 2022-12-20 | 河南好运祥耐材有限公司 | High-strength wear-resistant material for blast furnace slag runner |
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| CN103539469B (en) | 2015-06-10 |
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