Micro Silica
SiO2: 85%-98%
LOI: 2%MAX
PAI: 110%Min
Bulk Density: 250-650kg/m3
Silica fume in refractory
Enhancing the fluid of pouring refractory, reducing the volume of used water, be easy to shape, and raising the production efficiency.
Because of its untramicrostructure for gap filling, the compact and intensity of refractory gain rising by a wade margin.
Silica fume is a highly effective pozzolanic material, so it's easy to come into being Mullite Phase, under the premise that Al2O3 exists, enhance elevated temperature strength and thermal shock of refractory.
Test Item | Test Results |
Purity of SiO2(%) | 96.01% |
Appearance | Grey powder |
Fe2O3 (Iron oxide) | 0.05% |
Al2O3 (Aluminium oxide) | 0.15% |
CaO (Calcuim oxide) | 0.42% |
MgO (Magnesium) | 0.50% |
K2O (Potassium) | 1.19% |
Na2O (Sodium) | 0.13% |
Mositure (When packed) | 0.82% |
Loss On Ignition(L.O.I) @975O°C | 1.44% |
Coarse Particles;>45m(325 mesh) | 0.5% |
Ph-Value (fresh) | 6.5-8.0 |
Undensified Bulk density(When packed)
|
300-350kg/m3 |
