High-aluminum homogeneity-material chromic-oxide zirconium-oxide system abrasion resistant cast material

Abstract

The invention provides a high-aluminum-homogeneity-material chromic-oxide zirconium-oxide system abrasion resistant cast material which belongs to the field of high-temperature abrasion resistant fireproof materials. The raw material comprises a high aluminum homogeneity material, aluminum oxide micro powder, silicon dioxide micro powder, pure calcium aluminate micro power, chromic oxide, zirconium oxide and a polycarboxylic acid dispersing agent, wherein the high aluminum homogeneity material contains 70 to 90 percent of Al2O3 with the volume density of 2.9 to 3.5 g / cm3. The invention is characterized in that: the high-aluminum-homogeneity-material chromic-oxide zirconium-oxide system abrasion resistant cast material is made of the artificially synthesized homogeneity material with low water absorption rate, low porosity and good uniformity instead of conventional sintered alumina clinker with high water absorption rate, high porosity and poor uniformity or a corundum-mullite composite system. By employing a casting construction method, the material has good construction property, high strength, high abrasion resistance and excellent on-site use effect, is favorable for prolonging the service life of a furnace lining and improving the utilization efficiency of a high temperature kiln, and is widely used in parts, which are easily abraded, penetrated and eroded, of thermal equipment, such as blast furnaces, cowper stoves, 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 and refractory castables, in particular the invention of artificially synthesized homogeneous materials with low water absorption, low porosity and high uniformity to replace traditional sintered bauxite clinker with high water absorption, high porosity and poor uniformity Natural raw materials, or a composite raw material system of corundum and mullite, developed a high-alumina homogeneous material-chromium oxide-zirconia high wear-resistant castable. The material adopts the method of pouring construction, and can be widely used in the parts that are easy to wear, penetrate and erode in thermal equipment such as blast furnaces, hot blast stoves, circulating fluidized beds, garbage incinerators, and catalytic cracking units. technical background [0002] The parts prone to wear, penetration and erosion of thermal equipment such as blast furnaces, hot blast stoves, circulating fluidiz...

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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 develop wear-resistant refractory castables with low porosity, low water absorption and high stability by compounding chromium oxide and zirconia fewer reports

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