What is the proportion of perlite light castable?

Perlite refractory castable is widely used, with good thermal insulation effect, convenient construction and low price, and is well received by users.

Perlite refractory CAstable generally adopts portland cement, ca? 50 cement, sodium silicate, aluminum phosphate and aluminum sulfate are used as binders, and CA-50 cement is the most widely used. Perlite is generally selected with a bulk density of 70? 150kg/m3, well-expanded granular material with particle size ≥ 0.05mm When preparing high-strength perlite refractory castable, the appropriate volume density is 300? 500kg/m3, the aggregate is expanded perlite with the maximum particle size of about 5mm, and the particle size is ≤0. O5mm shall not exceed 10%.