Refractory Silica Fume/ Undensified Silica Fume
Silica Fume ia also called Micro silica, it is a very fine pozzolanic material, composed of amorphous silica produced by electric arc furnaces as a by-product of the production of elemental silicon or ferro silicon alloys. This micro silica used in refractory has a minimum of 92% content of silica, the average content of SiO2 is around 93%. And this undensified micro silica reaches national first grade standard,80% of granularity is less than 0.1 um with a maximum of 0.3 um.
Undensified micro silica is one of our most competitive products, we sell this product at 1000MT per month to all over the world, such as Korea, the Middle East, India, Indonesia and so on. Our refractory grade silica fume is satisfied by our customers for its good quality and competitive price.
Specification-Refractory Grade
|
Analysis
|
Result
|
Result
|
Result
|
Result
|
Result
|
|
SF94
|
SF95
|
SF96
|
SF97
|
SF98
|
|
|
SiO2(%)Min
|
94.50
|
95.50
|
96.50
|
97.10
|
98.1
|
|
Fe2O3(%)Max
|
0.25
|
0.23
|
0.2
|
0.1
|
0.7
|
|
Al2O3(%)Max
|
0.25
|
0.22
|
0.2
|
0.1
|
0.7
|
|
CaO(%)Max
|
0.35
|
0.30
|
0.25
|
0.15
|
0.11
|
|
Na2O + K2O(%)Max
|
0.3
|
0.28
|
0.25
|
0.15
|
0.09
|
|
Moisture(%)Max
|
1.75
|
1.45
|
1.1
|
0.8
|
0.65
|
|
Loss on Ignition
|
1.65
|
1.55
|
1.45
|
1.30
|
1.02
|
|
Bulk Density (kg/m3)
|
200-350
|
200-350
|
200-350
|
200-350
|
200-350
|