Fused silica lumps/cullet Grade A introudce is as follows:Fused
Silica is made of high purity crystal silica from China
Donghai-Xinyi by electrically fusing (fusing temperature
1800-2000ºC) to amorphous Silicon dioxide, then is specially
engineered into lumps,cullet, ingots, sand,grain,granular and
powder flour form designed for making PV fused silica
crucible,thermal ceramic,refractory,EMC investment casting ceramic
shell etc.Fused Silica lumps/cullet Grade A XRD Report: Grade A
Fused Silica lumps/cullet Specifications: 1.Physical
Properties1.1CompositionSiO21.2StructureAmorphous1.3ColourTransparent
or white1.4Melting Temperature approx.1750ºC1.5Specific
Gravity2.21g/cm31.6Hardness 7 Mohs1.7Thermal Expansion
0.5*10-62.Chemical Properties Grade A
30-50mm2.1SiO2>99.9%2.2Al2O3
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