铸造专用白刚玉粉 White Fused Alumina Microgrits for Casting
 
酬诚矿业生产的精铸用高纯度白刚玉砂粉利用先进的生产设备和特殊工艺，具有杂质小、气孔率低、体积稳定性和抗热震性好等特点，可代替锆英砂粉的熔模铸造的制壳材料，也用于硅溶胶工艺、大型铸钢件,特别是合金铸件型、芯面砂、涂料等。
The white fused alumina microgrits casting with high purity produced by Choucheng Mining is adopted with advanced production equipment and special technology, with small impurities, low stomatal rate, volume stability and good thermal shock resistance. It can replace casting shell materials made of zirconium grits, but also be used in silica sol technology, large-scale steel castings, especially alloy castings, core sand, coatings and so on.
 
理化指标Physical and Chemical indexes

用途 Purpose	规格 Specification		主要化学成分(%)Chemical composition(%)				磁性物(%) Magnetic   Material content(%)
			Al2O3	SiO2	Fe2O3	Na2O
铸造 Casting	细粉 Fine powder	200#-0	≥99.0	≤0.1	≤0.1	≤0.35	——
		270#-0
		320#-0