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- Superfine Wollastonite Powder
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Chemical Name: Wollastonite
Molecular Formula: CaSiO3
Property: Needle-like wollastonite powder is made of fiber crystal wollastonite and processed by special method. It protects the wollastonite white needle-like crystals with a large aspect ratio.
Uses: Widely used in composite materials, paper, coatings, rubber, plastics, sealing materials, insulation materials.
Packing: Composite plastic woven bag 25KG/bag
| Index Item | Internal Control Index | ||||
| GR120 | GR200 | GR400 | GR800 | GR1250 | |
| Silica% ≥ | 49 | 49 | 50 | 50 | 51 |
| Calcium oxide ≥ | 46 | 46 | 45 | 45 | 45 |
| Ferric oxide % ≤ | 0.18 | 0.18 | 0.18 | 0.18 | 0.16 |
| Magnesium oxide % ≤ | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Al2O3 % ≤ | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 |
| Moisture ≤ | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Whiteness% ≥ | 90 | 90 | 91 | 91 | 92 |
| L/D | 22:1 | 18:1 | 15:1 | 12:1 | 10:1 |
| 325 mesh residue %≤ | 0.15 | 0.10 | 0.06 | 0.01 | 0.008 |
| PH value (10% suspension) | 9 | 9 | 9 | 9 | 9 |
| Loss on ignition % | 2.5 | 2.5 | 2.5 | 2.5 | 2.0 |
