Homogeneous material-containing corundum-mullite high-strength abrasion-resisting plastic

Abstract

The invention discloses a homogeneous material-containing corundum-mullite high-strength abrasion-resisting plastic, belonging to the field of high-temperature abrasion-resisting fireproofing material, comprising high-aluminum homogeneous material, alumina fine powder, silica fine powder, clay, phosphoric acid, aluminum dihydrogen phosphate solution, pure calcium aluminate cement and the like as raw materials, wherein the homogeneous material is as follows: the content of Al2O3 is 70-90% and the volume density is 2.9-3.5g.cm<-3>. Synthetic homogeneous material with low water-absorption, low porosity and high homogeneity is used for substituting the traditional natural raw material of sintered alumina clinker with high-absorption, high porosity and low homogeneity or composite raw material system of corundum and mullite to produce homogeneous corundum-mullite high-strength abrasion-resisting plastic. Distinguished from the castable, the plastic can be directly utilized in the construction method of smearing and ramming without supporting a module. The material of the invention is good in workability, high in strength, good in abrasive resistance and optimal in on-site usage effect, which is in favour of prolonging service life of furnace lining and improving utilization efficiency of the high-temperature furnace.

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. Using the natural raw material of sintered bauxite clinker with poor efficiency and uniformity, a homogeneous corundum-mullite high-strength wear-resistant plastic was developed. Different from castables, plastics do not need to support molds, and directly adopt the construction methods of smearing and ramming. This material can be widely used in parts that are prone to wear, penetration and erosion of thermal equipment such as blast furnaces, hot blast stoves, circulating fluidized beds, waste incinerators, and catalytic cracking units, especially those with special shapes or complex struct...

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 plastics with low porosity, low water absorption and high stability.

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