ceramic foundry sand with AL2O3 for Large cast steel and coated sand casting

Ceramic Foundry sand is made of high quality bauxite, which has been remelted and then blown into ball shape. Ceramic Foundry sand is a new casting material with high surface finish and good air permeability. Advantages: Spherical grain, low thermal expansion, good anti-breakness, well refractory, low density, neutral materials Application: 1. Ceramic Foundry sand is widely used in resin sand (furan resin, phenolic resin), water glass sand (organic fat, CO2 hardening), and coated sand. 2, Ceramic Foundry sand is suitable for all kinds of metal castings such as: carbon steel, alloy steel (high manganese steel, high chromium iron), cast iron, cast copper. 3, Ceramic Foundry sand is a non-quartz type of artificial sand, suitable for various casting methods such as: V method, VRH, lost foam mold, investment mold, general sand mold (clay sand, sodium silicate +CO2 hardening), resin sand. Chemical: Al2O3: 70% min ; Fe2O3: 3% max Grain type: ball, spherical Angularity: 1.1 max, similar to ball Packing density: 1.95-2.05 g/cm3 Refractoriness: 1790 C min Thermal expansion: 0.13% (10 min at 1000 C ) Size: 10-14 mesh; 20-30 mesh; 30 mesh; 40-70 mesh; 100-140 mesh; 170 mesh