SiO2 Quartz powder,sand
Has different meshes, from10 mesh to 600 mesh.
Their mathing whiten from 90% to 95%

Certificate of  Analysis 

Sio2≥        99%              

Fe2O3≤    0.1%       

whiteness:     91-92% 

Moisture:        0.08%                                        

Ignition loss:      0.25%

Al2O3:          0.103%                                             

CaO:        0.048%

water absorption( g/100g):     25-30          

Oil absorption(g/100g) :      25-30

Application:

Metallurgy industry: fusing agent of metal's smelting, making acidity fire brick

Fused quartz:  pure Silicol Dioxide can be used to make fusedquartz and extract and purify crystalsilicon

Chemical industry: making silicon compound, filler of sulfuric acid tower

Building materials: raw materials of glass, ceramics and the correcting

Grind materials: making grindstone, oilstone, sandpaper, silicon carbonate