Fused Quartz Silica Powder
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Fused quartz powder Introduction:
Fused quartz powder, fused quartz powder (Fused silica) is through Donghai Colorful mineral  company selection of the Donghai local quality natural quartz, high temperature melting ,melting fused amorphous silica ,cooling after sorting micronized broken, the smelting transparent quartz material as the main raw material, processed from our standard production process.

Fused quartz powder, fused silica powder of high purity, with a coefficient of thermal expansion, low internal stress, low-level radioactive and other fine features.

And having the following characteristics: low coefficient of linear expansion; good electromagnetic radiation; corrosion resistance, chemical stability of the chemical characteristics; reasonably orderly, controlled particle size distribution.

This product is mainly used in electronic packaging, investment casting, high-grade electrical insulation, paint and coatings, silicone rubber, refractory ,fire resistant and other industries.

Second, fused quartz powder main technical performance indicators

Chemical Composition		Specification Mesh(mm)
SiO2%	≥99.80	300～5000mesh According to the different needs of customers
Fe2O3%	≤0.010
Al2O3%	≤0.10
Water Content%	≤0.08
Lossin Ignition%	≤0.10
Na+ppm	≤2
Cl-ppm	≤2
Fe2+.3+ppm	≤5
Ec Electric Conductivity μs/cm	≤3
Physical Properties
Crystalline Status	Amorphous
Melting Point℃	1713
Boiling Point℃	2230
Density，g/cm	2.20
Mohs Hardness	6