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Anti-crusting wear-resistant castable for limekiln

An anti-skinning and lime kiln technology, applied in the field of refractory materials, can solve the problems of destroying the internal organization and internal material structure of refractory materials, lime raw material crusting and blockage, poor ventilation of the system, etc., to achieve enhanced anti-erosion and anti-corrosion Scourability, uniform texture, anti-skinning effect

Inactive Publication Date: 2017-08-04
嘉兴新耐建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there will always be problems of crusting and clogging of lime raw material during use, which will destroy the internal organization and internal material structure of the refractory material. System disorder, coal consumption increased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An anti-skinning and wear-resistant pouring material for lime kiln, including base material, ingredients and additives. The main component of the base material includes the following components by weight: 10 parts of Cr 2 AlC, 8 parts Ti 2 AlC, 25 parts of fused magnesia-zirconium spinel, 25 parts of sintered zirconia corundum, 20 parts of fused mullite, 5 parts of fused magnesia-calcium sand and 7 parts of fused calcium aluminate cement, the fused magnesia-calcium sand The content of magnesium oxide in the medium is more than 80%. The ingredients include particulate ingredients and fiber ingredients. The length of the fiber ingredients is 1-2 mm. and 30% to 40%; the fused magnesia-zirconium spinel includes 16% to 25% of the magnesia-zirconium spinel with a particle size of 0.5-2.5 mm in mass percentage, and 30 to 65% of the magnesia-zirconium spinel with a particle size of 2.5-6.5 mm mm magnesia-zirconium spinel and 30-65% magnesia-zirconium spinel with a particle si...

Embodiment 2

[0017] An anti-skinning and wear-resistant pouring material for lime kiln, including base material, ingredients and additives. The main components of the base material include the following components by weight: 12 parts of Cr 2 AlC, 8 parts Ti 2 AlC, 23 parts of fused magnesia-zirconium spinel, 25 parts of sintered zirconia corundum, 20 parts of fused mullite, 5 parts of fused magnesia-calcium sand and 7 parts of fused calcium aluminate cement, the fused magnesia-calcium sand The content of magnesium oxide in the medium is more than 80%. The ingredients include particulate ingredients and fiber ingredients. The length of the fiber ingredients is 1-2 mm. and 30% to 40%; the fused magnesia-zirconium spinel includes 16% to 25% of the magnesia-zirconium spinel with a particle size of 0.5-2.5 mm in mass percentage, and 30 to 65% of the magnesia-zirconium spinel with a particle size of 2.5-6.5 mm mm magnesia-zirconium spinel and 30-65% magnesia-zirconium spinel with a particle si...

Embodiment 3

[0019] An anti-skinning and wear-resistant castable for lime kiln, the castable includes base material, ingredients and additives. The main components of the base material include the following components by weight: 11 parts of Cr 2 AlC, 8 parts Ti 2 AlC, 23 parts of fused magnesia-zirconium spinel, 25 parts of sintered zirconia corundum, 20 parts of fused mullite, 5 parts of fused magnesia-calcium sand and 8 parts of fused calcium aluminate cement, the fused magnesia-calcium sand The content of magnesium oxide in the medium is more than 80%. The ingredients include particulate ingredients and fiber ingredients. The length of the fiber ingredients is 1-2 mm. and 30% to 40%; the fused magnesia-zirconium spinel includes 16% to 25% of the magnesia-zirconium spinel with a particle size of 0.5-2.5 mm in mass percentage, and 30 to 65% of the magnesia-zirconium spinel with a particle size of 2.5-6.5 mm mm magnesium-zirconium spinel and 30-65% magnesium-zirconium spinel with a parti...

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PUM

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Abstract

The invention discloses an anti-crusting wear-resistant castable for a limekiln. The anti-crusting wear-resistant castable comprises base materials, auxiliary materials and an additive, wherein the base materials are mainly composed of, by weight, 10 to 15 parts of Cr2AlC, 5 to 8 parts of Ti2AlC, 20 to 25 parts of fused magnesium-zirconium spinel, 25 to 28 parts of sintered fused alumina zirconia, 20 to 30 parts of fused mullite, 5 to 10 parts of fused magnesia-calcium clinker and 3 to 8 parts of fused calcium aluminate cement. The castable provided by the invention is especially applicable to the limekiln, has uniform interior structure and uniform crystals, maintains integral performance, presents enhanced resistance to erosion and scouring and, more importantly, can effectively prevent crusting, resolve blockage and ensure ventilation and smoothness of a system in the kiln.

Description

technical field [0001] The invention relates to a casting material, in particular to an anti-skinning and wear-resistant casting material for a lime kiln, which belongs to the field of refractory materials. Background technique [0002] In the lime kiln, the top and side walls of the lime kiln are prone to crusting, and the damage to the castable is very serious, and the kiln is often shut down for maintenance. Usually, steel fiber castables or high-alumina low-cement castables are used in these parts, such as a mullite steel fiber castable disclosed by the patent number CN101805198B, expressed in weight percentage, the mullite steel fiber castable The proportion of raw materials contains 29~40% of brown corundum, 10~15% of high alumina bauxite clinker, 18~32% of sintered mullite, 8~12% of fused mullite, 3~7% of silica powder, 2~5% of coagulant and 1~3% of stainless steel fiber, compared with the existing ordinary high-alumina castables, it has higher compressive strength a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 王杉杉
Owner 嘉兴新耐建材有限公司
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