High-performance composite refractory material for kiln opening

Abstract

The invention discloses a high-performance composite refractory material for a kiln opening. The high-performance composite refractory material is prepared from ingredients in percentage by weight: 30 to 44 percent of tabular corundum, 12 to 17 percent of rubing grain, 7 to 12 percent of composite alundum powder, 10 to 15 percent of andalusite, 5 to 10 percent of aluminum oxide micro powder, 3 to 8 percent of zircon sand, 2 to 4 percent of cyanite, 1 to 3 percent of silicon micro powder, 3 to 7 percent of nanometer silicon carbide powder, 3 to 6 percent of pure calcium aluminate cement, 4 to 6 percent of zirconium carbonate powder, 1 to 2 percent of zinc silicate powder, 1 to 2 percent of additives, 0.3 to 0.5 percent of additive heat-resistant steel fiber and 0.1 to 0.2 percent of dispersants. The high-performance composite refractory material for the kiln opening has the beneficial effects that the refractory material ingredients in the prior art are improved; the tabular corundum, the rubing grain and the composite alundum powder are used as aggregate ingredients; powder materials such as the nanometer silicon carbide powder, the zircon sand, the cyanite, the composite additives, the zirconium carbonate powder and the zinc silicate additive heat-resistant steel fiber are added; the obtained high-performance composite refractory material for the kiln opening has the advantages that bursting does not occur after fast baking; the wear-resistant performance at high temperature is good; the performance of resisting the erosion of cement clinker atmosphere generated by different raw materials is realized.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a high-performance composite refractory material for a kiln mouth. Background technique [0002] Due to the harsh environment of high temperature, cement clinker scouring, wear, rapid cooling and rapid heating, and the special part of the port, the rotary kiln mouth and other parts of the new dry process cement production technology are prone to mechanical deformation and peeling. Materials put forward higher requirements. The refractory castables in the prior art have poor thermal shock resistance and low high-temperature thermal strength, and are prone to bursting during the rebaking process, have poor wear resistance, are sensitive to cement clinker atmosphere (alkaline atmosphere), and are resistant to alkali. The erosion performance is poor, the service life is short, and the kiln mouth is only about 4 to 6 months. There are problems such as peeling and falling of castab...

AI Technical Summary

Problems solved by technology

The refractory castables in the prior art have poor thermal shock resistance and low high-temperature thermal strength, and are prone to bursting during the rebaking process, have poor wear resistance, are sensitive to cement clinker atmosphere (alkaline atmosphere), and are resistant to alkali. Poor erosion performance, short service life, only about 4 to 6 months at the kiln mouth, there are problems such as peeling and falling of castables