Refractory kaolin for sale hydrous kaolin powder

Mullite, an aluminosilicate refractory, is generally used in stainless steel precision casting process. The fire resistance is around 1750 degrees, and the higher the aluminum content in mullite sand, the lower the iron content, and the higher the dust content. The better the quality of mullite sand products. Mullite sand is made from kaolin by high-temperature sintering. The classification of mullite sand generally includes 8-16 mesh, 16-30 mesh, 30-60 mesh, 60-80 mesh, 80-120 mesh; Molay powder generally has 200 mesh, 300 mesh, etc.In precision casting process, general surface slurry, zirconium powder: 325 mesh+silica sol sand: zirconium sand 120 mesh. Back layer slurry: 325 mesh+silica sol+mullite powder 200 mesh sand: mullite sand 30-60 mesh Reinforcement layer: mullite powder 200 mesh+silica sol sand: mullite sand 16-30 mesh Sealing slurry: 200 mesh mullite powder+silica sol

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