Fused silica powder
ChemSize is manufacturer/factory of fused silica powder which is made of fused silica ingot/lumps by Non Iron ball mills technology.
Fused silica ingot/lumps is made of high purity crystal silica by electrically fusing (fusing temperature 1800-2000ºC) to amorphous Silicon dioxide, then it is classed to different grades by manual and then specially engineered to powder by ball mill.
Applications:
High volume stability,high purity but low volumetric expansion makes fused silica powder a very useful and verstile material for refractory applications or other highly cyclical applications.
Chemsize fused silica powder has an near zero thermal expansion coefficient,consistent chemistry and carefully controlled particle size distribution.Fused silica powder are designed for use in refractory,flow control/continuous casting,investment casting,precision casting,lost-wax process,technical thermal ceramic and other special applications.Fused silica powder has very high electrical resitivity and low thermal conductivity,so it used as filler in epoxy molding compounds for semi-conductors and fusion bounded epoxy powder coastings.
Applications:
to make crucibles that produce solar cells board in the photo-voltaic industry.
Fused silica powder is used to make rollers, castables, mortars, gunning mixtures and forming tools in the glass industry,make technical ceramic in the thermal resistance industry,to make ceramic slurry in investment and to make Acidic acid refractory,Fused silica precast shapes,Fused silica big blocks and fused silica castables.
ü Filler of epoxy molding compound
ü Filler of epoxy potting compound
ü Filler of silicon rubber
ü Filler of functional coating
ü Filler of fusion bonded epoxy powder coating.
Main Characteristic:
lower linear expansion coefficientlower tension & lower radiationit is environmentally, no harm to workers and environment.
Typical Physical Properties
| Color and particle shape |
White/ angular |
| Hardness |
7Mohs |
| True Specific Gravity |
2.2g/cm3 |
| Softening poing |
approx.1650ºC |
| Melting point |
approx.1750ºC |
| Bulk Density |
0.9-1.1mt/m3 |
| Dielectric Constant |
3.8(1MHz) |
| Thermal Conductivity |
1.3w/m·k |
| Coefficient of thermal expansion |
0.5*10-6 |
Chemical Composition:
| SiO2 |
Al2O3 |
Fe2O3 |
Na+ |
Cl- |
PH |
Magnetic material |
| >99.9% |
<1000ppm |
<30ppm |
<3ppm |
<3ppm |
5-7 |
<15ppm |
Particle size:
ChemSize is capable of making powders with different particle size distribution.Particle sizing is controlled using the most up-to-date particle size analyzers.
What the finest powder chem&size minerals can supply is with D50 1-3microns.Other size is as follows:
-100mesh,-120F mesh,-150L,-200mesh,-325mesh,-600mesh,-800mesh,-1000mesh,-2000mesh,
| Laser particle size(D50) |
19-21μm |
15-17μm |
9-11μm |
1-3μm |
Other size are available if customers require.
Package: in Paper bag or plastic woven bag of 25kg net each,then packed on pallet.
in big bag of 1-1.2MT net each
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