Phosphate refractory castable is a high-quality high-alumina clinker, phosphoric acid as the main material, plus a number of mixed materials from the preparation. Plasticity is good, high temperature conditions, compression, high flexural strength of a heat-hard amorphous refractory, widely used in power system fluidized bed boiler, a variety of chain boilers, pool and lining and other parts. Phosphate refractory castables are an important feature.
1, the troubles, and refractory aggregate and powder and the amount of cement with the amount of 3/5 or so mixed with the first, into the silo or puzzle site, covered with plastic sheet to prevent the evaporation of cement; at the same time not in contact with water , The temperature should be greater than 15 C. Stand for a period of time, so that cement and refractory aggregate and powder in the metal fully reacted to release hydrogen.
2.Using porcelain ball mill or grinding with a strong acid (such as hydrochloric acid, etc.) and the use of magnetic separation and other methods, less into or exclude impurities such as metal.
3.Reduce the amount of cementing agent, adding inhibitors or increasing the molding pressure. Once the pressure of molding is reached, the strength after adjustment after warming can be achieved.
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