Corundum-mullite high strength and wear resistant casting material containing homogenous material

Abstract

The invention relates to a corundum-mullite high strength and wear resistant casting material containing a homogenous material, belonging to the field of high temperature wear resistant and fireproof materials. The corundum-mullite high strength and wear resistant casting material comprises the raw materials of a high-alumina homogenous material, alumina micro powder, silicon dioxide micro powder, pure calcium aluminate cement, additives, and the like, wherein the homogenous material has the characteristics: the content of Al2O3 is 70-90%, and the volume density is 2.9-3.5g.cm<-3>. The corundum-mullite high strength and wear resistant casting material is characterized in that the traditional composite raw material system of sintered bauxite clinker or corundum and mullite with high water absorption rate, high porosity and poor uniformity is replaced by utilizing an artificially synthesized homogenous material with low water absorption rate, low porosity and high uniformity to produce the homogenous corundum-mullite high strength and wear resistant casting material. Because a method of pouring construction is adopted, the material has favorable construction performance, high strength, favorable wear resistance and optimal use effect on site, the service life of a furnace liner is beneficially prolonged; the utilization rate of a high temperature kiln is improved; and the corundum-mullite high strength and wear resistant casting material is widely applied to wearable, penetrative and corrosive parts of thermal equipment, such as blast furnaces, hot blast furnaces, recirculating fluidized beds, garbage incinerators, catalytic cracking units, and the like.

Description

technical field [0001] The invention belongs to the field of high-temperature wear-resistant refractory materials, especially the invention of a system that uses artificially synthesized homogeneous materials with low water absorption rate, low porosity and high uniformity instead of corundum and mullite raw materials for direct compound use or high water absorption rate and high porosity. Based on the natural raw material of sintered bauxite with poor efficiency and uniformity, a corundum-mullite high wear-resistant castable with high alumina content was developed. The material adopts the method of pouring construction, and can be widely used in blast furnaces, hot blast stoves, circulating fluidized beds, waste incinerators, catalytic cracking units and other thermal equipment that are prone to wear, penetration and erosion. technical background [0002] The parts prone to wear, penetration and erosion of thermal equipment such as blast furnaces, hot blast stoves, circulat...

AI Technical Summary

Problems solved by technology

[0005] The application of homogeneous materials has been gradually expanded, and the use of Al 2 o 3 Homogeneous materials with a content of 70% to 90% replace traditional sintered bauxite clinker or corundum-mullite mixed raw materials, and there are few reports on the development of wear-resistant refractory castables with low porosity, low water absorption and high stability.

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