GWECO LLC
Microsilica
Microsilica technical grades and source-listed specifications for customer review.
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Microsilica is listed in GWECO’s Industrial & Refractory Materials Catalog, Revision 4 (October 2026), under Microsilica.
Source-listed technical profile: 971U / Sideflow HQ.
Contact GWECO with the required grade, particle size, quantity and delivery destination to confirm current availability, packaging and shipment requirements.
GWECO did not perform the original testing. Source-reported results do not certify any particular shipment or production lot. Confirm current availability and shipment requirements with GWECO.
Available grades and sizes
971U / Sideflow HQ
Technical specifications
Available sizes
Property |
|---|
SPECIFIED LIMITS AND REPORTED RESULTS
Characteristic | U/M | Minimum | Maximum | Result |
|---|---|---|---|---|
SiO₂ | % | 98 | — | 98 |
H₂O | % | — | 0,5 | 0,1 |
Cfree | % | — | 0,7 | 0,4 |
Fe₂O₃ | % | — | 0,1 | <0,1 |
Al₂O₃ | % | — | 0,3 | 0,2 |
CaO | % | — | 0,3 | 0,3 |
MgO | % | — | 0,2 | 0,2 |
K₂O | % | — | 0,3 | 0,2 |
Na₂O | % | — | 0,3 | 0,2 |
SO₃ | % | — | 0,3 | 0,2 |
Cl | % | — | 0,1 | <0,1 |
P₂O₅ | % | — | 0,1 | <0,1 |
>45 µm | % | — | 0,5 | 0,2 |
LOI 950 | % | — | 0,8 | 0,6 |
Bulk density | kg/m³ | 250 | 350 | 336 |
pH | pH | 5,5 | 7,5 | 7,0 |
Property |
|---|
Property |
|---|
971U / Sideflow HQ
Separate commercial size options are not specified in the catalog for this grade.