High-aluminum high-strength refractory castable material

Abstract

The invention relates to a high-aluminum high-strength refractory castable material which is prepared from the following components in parts by weight: 40-60 parts of bauxite, 5-10 parts of special kaolin, 2-8 parts of dolomite, 5-10 parts of zircon, 1-15 parts of silicon carbide, 5-10 parts of binder, 2-5 parts of coagulating powder, 1-2 parts of emery powder, 10-15 parts of aluminum oxide micro powder and 1-5 parts of water. Bauxite, special kaolin, dolomite, zircon and silicon carbide are mixed to prepare particles and fine powder, wherein the particles and fine powder comprise 40-60 parts by weight of particles and 60-40 parts by weight of fine powder; the particle size range of the particles is 3.0-1mm and the grain size of the fine powder is 0.9-0.1mm.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a high-aluminum high-strength refractory castable. Background technique [0002] Compared with qualitative refractory products, unshaped refractory materials represented by refractory castables have the advantages of short process flow, low production energy consumption and cost, convenient use, wide application range, integrity and good use effect, so they are widely used in the world. It has developed rapidly, and its proportion in the whole refractory material is getting higher and higher. In some countries with advanced refractory technology, the output of unshaped refractories has approached or even exceeded the output of shaped products. For example, the current output of unshaped refractory materials in Japan accounts for about 60% of the total refractory materials; in the United States, it is about 50%; in Britain, Germany, France and other count...

AI Technical Summary

Problems solved by technology

[0003] However, the aluminum oxide content of the existing high-alumina monolithic refractory materials is generally below 75%, and its high temperature resistance, wear resistance, and shock resistance are slightly insufficient. Composite properties of refractory materials, product structure compactness and corrosion resistance are poor, and hardening and condensation are slow

Now, the high-temperature zone of various medium and high-temperature furnaces or the inner wall of the combustion chamber (refractory wall and metal surface) of various medium and high-temperature furnaces that use coal, electricity, oil, and gas as energy sources need to be integrally cast, thickened, and Pasting and repairing, especially the pouring, repairing and roof sealing of the steel rolling furnace wall in the metallurgical industry and the transformation of the furnace combustion belt of the thermoelectric boiler in the thermal power industry, the wear resistance around the burner and the wear resistance of the flue wall, and the furnace roof sealing. It is difficult for a single high-alumina monolithic refractory material to achieve the functions of wear resistance, high temperature resistance, earthquake resistance, energy saving and consumption reduction