Composite combined aluminum oxide-silicon carbide-(carbon) system amorphous refractory material

Abstract

The invention relates to a complex combination alumina-carborundum-(carbon) series amorphous fire proof material, and the formula comprises: 36 to 32 percent of 8-3mm corundum or bauxite, 18 to 26 percent of 3-1mm corundum or bauxite, 10 to 22 percent of 1-0.0088mm corundum or bauxite, 0 to 15 percent of 1-0.088mm carborundum, 0 to 3 percent of 1-0.0088 spherical asphalt, 0 to 20 percent of d90 less than 0.088mm corundum or bauxite, 0 to 20 percent of d90 less than 0.088 carborundum, 0 to 3 percent of d90 less than 0.088mm high-carbon materials, 0 to 5 percent of alpha alumina micro powder, 1 to 8 percent of alumina hydrate, 1 to 6 percent of silicon ash, 0 to 2 percent of calcium aluminate cement, 0.05 to 0.4 percent of plus super-plasticizer (polycarboxylic acids+sulfonated naphthalene formaldehyde polymer+sulfonated melamine polymer), 1 to 6 percent of plus polypropylene acid series latex and 1 to 6 percent of plus water. Compared with low-cement aluminum carborundum carbon material, the material has good anti-corrosion performance. Therefore, the service life of a kilneye of a cement kiln and a main groove slag line of a blast furnace can be prolonged when a product is combined by the complex combination alumina-carborundum-(carbon) series amorphous fire proof material instead of the cement.

Description

technical field

[0001] The invention relates to a compound bonded aluminum oxide-silicon carbide-(carbon) series unshaped refractory material. At room temperature, rely on the reaction of polyacrylic acid emulsion and hydratable aluminum oxide to form polyacrylic acid aluminum (calcium) to form a bond to obtain the required coagulation, hardening, mold release and drying properties. At high temperature, rely on reaction sintering to form mullite bond to obtain good high temperature resistance. At the same time, it is also beneficial to disperse carbonaceous raw materials and improve the anti-oxidation layer to increase the service life. Background technique

[0002] Alumina-silicon carbide-(carbon) material is a widely used refractory material.

[0003] The cement industry uses alumina-silicon carbide refractory castables as materials for rotary kiln mouths and other places. The material relies on the oxidation of silicon carbide to produce a high-viscosity substance, whi...