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970 Silica Fume: Gray powder, SiO2 content is 96 ~ 98.5%, Densified or Semi-densified, can be used in high-grade refractory materials, baffle plate, and silicon carbide, as a necessary admixtures.
970 Silica Fume is widely used in refractory industry. The practical application in the following aspects:
1.Instead of pure aluminum oxidation mud as refractory materials
2. As additive production in amorphous and shaped refractory products, greatly improve strength, high temperature performance.
3. Used as coagulant agent in the pouring of steel barrel’s monolithic lining.
4. As binder, coagulant agent, additives in the production of other refractory.
Technical Index of 970 Silica Fume（Typical）
| Analysis | GB/T 21236-2007 Standards | Typical Result of 970 SF |
| SiO2（%） | ≥ 96 | 96~98.5 |
| Cl- （%） | ≤ 0.10 | ≤ 0.02 |
| Loss on lgnition（%）@750°C | ≤ 1.0 | ≤ 1.0 |
| Moisture Content（%） | ≤ 1.0 | ≤ 1.0 |
| Water Requirement Ratio（%） | ≤125 | ≤110 |
| Specific Surface Area（m2/kg） | ≥15000 | 18000 |
