Fused Silica

Qmin-SIL Series Fused Silica is made of high purity Chinese crystal Silica by electrically fusing (fusing temperature 1800-2000 degrees centigrade) to amorphous Silicon dioxide, then specially engineered ingots, granular and flour form designed for making PV fused silica crucible.

Special features:
Very low coefficient of thermal expansion
Superior Heat resistance
Pure(high SiO2 content, low Fe, Na, K & Ti)
Consistent Chemistry
Statistically controlled particle size distribution

Chemical Composition:
SiO2: 99.95% Al2O3: 200ppm Max
Fe2O3: 50ppm Max Na2O: 40ppm
K2O: 40ppm CaO: 40ppm
MGO: 30ppm ZrO2: 35ppm
TiO2: 15ppm MnO: 3ppm
CuO: 5ppm Cr2O3: 10ppm
BaO: 10ppm

Physical Properties:
Specific Gravity: 2.21 Hardness(Mohs): 7.0
pH: 5-7 Magnetics: 20ppm Cristobalite: 0.1%

Size Available:
(1) Cullet 10-60mm
(2) Gramules
4/20 mesh, 50/100 mesh, 100/200 mesh
10/30 mesh, 30/50 mesh, 50/100 mesh, 120 mesh, 200 mesh, 325 mesh

Remark: The particle size can also be produced as customer's special requirement.