Product Description

Mullite sands are aluminum silicate refractory, which are commonly used in stainless steel precise-casting process. They possess refractoriness degree of ***0. The higher aluminum content, the lower iron content, and the smaller dust indicate the better quality. Mullite sands are made from kaolin through high heat sintering. The Low content of impurities, high volume density and good fire resistance make them the top preference for precise-casting. The general classifications of mullite sands are: ****0 meshes, ****0 meshes, ****0 meshes, *****0 meshes; Those of mullite powders are: **0 meshes, **0 meshes,**0 meshes, **5 meshes, etc. The general chemical composition: *6%≥Al2O3≥*2%，*3%≥SiO2≥*1%，0.8≤Fe2O3≤1.2%
Advantages: pouring casting, easy-shelling, no deformation, resistance to scale, good brightness and high yield rate.