Special castable for kilneye of cement kiln

Abstract

The invention discloses a special castable for a kilneye of a cement kiln. The special castable is prepared from the following raw materials: mullite, silicon carbide, calcium titanium aluminate, corundum, cement, aluminum oxide micro powder, silicon micro powder, silicon nitride powder, strontium titanate powder, sillimanite powder, zirconium carbonate powder, additional fibers and a graphene modified water reducing agent, wherein the mullite is a mixture of mullite with the particle size of 5-3mm, mullite with the particle size of 3-1mm, mullite with the particle size of 1-0.088 mm and mullite with the particle size of less than 0.088 mm according to the weight ratio of (15-30): (5-12): (2-7): (5-12); the silicon carbide is a mixture of silicon carbide with the particle size of 1-0.088 mm and silicon carbide with the particle size of less than 0.088 mm in a weight ratio of (1-3): (2-4); the titanium calcium aluminate is a mixture of titanium calcium aluminate with the particle size of 3-1mm and titanium calcium aluminate with the particle size of less than 1mm according to the weight ratio of (5-8): (16-23); and the corundum is a mixture of corundum with the particle size of 3-1mm, corundum with the particle size of 1-0.5 mm and corundum with the particle size of less than 0.5 mm according to the weight ratio of (7-13): (3-8): (1-3).

Description

Technical field [0001] The present invention relates to the field of material technology, and more particularly to a special casting of a cement kiln field. Background technique [0002] The discharge port of the cement rotary kiln is referred to as the kiln section, which is hale, in addition to the high temperature of up to 1400 ° C, with the continuous discharge pressure of cement kiln clinker, rotary kiln swivel mechanical stress, chline alkali erosion on it, Therefore, the kiln firing refractory material is more demanding high temperature, heat shock, flushing and wear, so the casting materials used in the cement kiln kiln port must have good thermal shock resistance, wear resistance and alkali resistance. However, existing castables still have shortcomings such as poor anti-alkali erosion performance, poor thermal shock stability, leading to the service life of the cement kiln kiln, unhappy in 3 to 8 months, and cannot meet the needs of customers. Inventive content [0003...

AI Technical Summary

Problems solved by technology

However, the existing castables still have shortcomings such as poor alkali corrosion resistance and poor thermal shock stability, resulting in a service life of the cement kiln mouth ranging from 3 to 8 months, which cannot meet the needs of customers