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Sepiolite
Introduction of sepiolite
1. Chemical Formula: Mg8(H2O)4[Si6O16]2(OH)4•8H2O
2. A clay mineral of fibrous magnesium silicate
3. A hydrous aluminum-magnesium silicate with chain structure
4. Lusterless, innoxious, flavourless, no pollution
5. Low shrinkage rate, good plasticity and Insulation, strong adsorbability
6. Temperature resistance, salt resistance, acid resistance
Specification of Sepiolite
| Grade | Fiber Length | Mineral content | Powder content | Sand content | Moisture |
| 400 | 0-30MM raw mineral | ≥95% | ≤30% | ≤3% | ≤3% |
| 500 | 0-30MM raw mineral | ≥95% | ≤30% | ≤3% | ≤3% |
| 600 | 0-30MM raw mineral | ≥95% | ≤30% | ≤3% | ≤3% |
| Sepiolite fiber | 20-40 MESH | ≥95% | ≤30% | ≤3% | ≤3% |
| Sepiolite fiber | 0.5-5MM | ≥95% | ≤15% | ≤3% | ≤3% |
| Sepiolite fiber | 3-6MM | ≥95% | ≤10% | ≤3% | ≤3% |
Free Asbestos Test Report
| Test Item(s) | CAS NO | Unit | MDL | Result |
| Actinolite | 077536-66-4 | %(w/w) | 0.1 | Negativie |
| Amosite | 012172-73-5 | %(w/w) | 0.1 | Negativie |
| Anthophylite | 077539-67-5 | %(w/w) | 0.1 | Negativie |
| Chrysotile | 012001-29-5 | %(w/w) | 0.1 | Negativie |
| Crocidolite | 012001-28-4 | %(w/w) | 0.1 | Negativie |
| Tremolite | 077536-68-6 | %(w/w) | 0.1 | Negativie |
Application of Sepiolite
| Application fields | Main Use |
| Petroleum, Chemical | 1) special drilling mud with salt resisting and high-temperature resisting 2) adsorbent, decoloring agent, bleaching agent, filtering agent 3) catalytic and catalytic carrier 4) molecular sieve, ion exchanger, suspending agent, antigelling agent ,thickener, thixotropic agent |
| Light industry, Medicine, Food | 1) bleaching agents of making the sugar and wine 2) clarifying agent of vegetable juice and fruit juice 3) filtering agent, drying agent, purifying agent, deodorant, detoxicating agent 4) adsorbent, cigarette filters, thickener and thixotropic agent of cosmetics, medicine carrier |
| Environmental Protection | 1) treat of sulfides, nitrides, and various industrial and domestic wastewater 2) adsorption and removal of various organic and inorganic (metal ions) pollutants 3) indoor air purification, water purification |
| Machinery | 1) molding sand binder 2) electrode coating etc |
| Non-metallic materials | 1) Sound insulation and heat insulation materials, 2) special heat-resistant coating materials, glass enamel, special ceramics 3) being used in friction materials instead of asbestos fiber |
| Plastics, Rubber | functional filling |
| Agriculture | 1) carriers of pesticide and fertilizer 2) additive, adhesive, carrier of feed 3) animal medicament 4) livestock dunnage |
Physical Property
| Fiber type | Longitudinal fiber |
| Colour | white, light gray, pale yellow |
| Specific gravity | 2-3.2 |
| Hardness | 2-2.5 |
| Dehydration temperature | 400~500℃ |
| Melting point | 1500-1700 ℃ |
| Tensile strength | 892.4~1283.7Mpa (medium strength) |
| Thermal conductivity | 0.038-0.046W/m.K |
| Electrical resistivity | Pv=5.9×106(Ω•cm) |
Chemical Composition
| SiO2 | Al2O3 | Fe2O3 | FeO | MnO | CaO | MgO | P2O5 |
| 55.27% | 0.05% | 0.53% | 0.25% | 0.26% | 1.01% | 24.8% | 0.02% |
