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Specifications
Specifications Vermiculite1. color: silver
2. size: 0.3-1.0mm,1-2mm,2-4mm,4-8mm
3. delivery time: within 10days
Vermiculite is a mineraloid of hydrated laminar magnesium-aluminum- iron silicate. Its chemical composition greatly varies and chemical formation could be simplified as(Mg,Fe,Al)3(Al,Si)4O10(OH)2·4H2O. When heated to a temperature of about 850-950°C, it instantly expands(exfoliates) up to 15-25 times as water flashing into steam, maximum 30 times its original bulk volume. There is a color change during expansion from golden brown into silver white depending upon the composition of the vermiculite and temperature. With such prominent characteristics as being fireproof, heat insulating,sound and moisture absorbing,non-toxic, lightweight and disease free, it is widely used in construction, chemical industry, petroleum, electronics, light industry, environmental protection and as a medium of agricultural chemical products etc.
Our vermiculite essential has the following characteristics:
-PH 7 max.
-Asbestos-free
-Thermal conductivity: 0.045-0.06 Calorie/M
-Unit weight: Approx.0.9kg/M3
-Tensile strength: 1,000-1,500kgs/CM2
-Hardness: 1-1.8
CHEMICAL COMPOSITION OF VERMICULITE
ELEMEMT | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | TiO2 |
CONTENT% | 37.56 | 11.85 | 5.15 | 1.51 | 22.44 | 1.05 |
ELEMEMT | K2O | P2O5 | S | MnO | H2O | LOI |
CONTENT% | 6.39 | 0.085 | 0.046 | 0.030 | 7.18 | 6.71 |
VERMICULITE CONCENTRATE
(MM) SIZE | (G/ML) DENSITY | ( %) SPECIFICATION | (%) MOISTURE | (%) IMPURITY | (ML/G) EXPANSION VOLUME |
0.3-1 | 0.5-0.9 | 85MIN | 5MAX | 8MAX | 6.5MIN |
1-2 | 0.5-0.9 | 85MIN | 5MAX | 8MAX | 8MIN |
2-4 | 0.5-0.9 | 85MIN | 5MAX | 8MAX | 7MIN |
4-8 | 0.5-0.9 | 85MIN | 5MAX | 8MAX | 7MIN |
MAIN PROPERTY OF EXPANDED VERMICULITE
KG/M3 DENSITY |
W/(M.K) THERMAL CONDUCTIVITY | (°C) FIRE-PROOF | (°C) TEMPERATURE IN USE | (%)WATER-ABSORBING | (%) MOISTURE ABSORBING |
ANTI-FREEZING |
SOUND ABSORBING |
CORROSION RESISTING |
60-200 | 0.047-0.081 | 1300-1350 | 900-1000 | 26.5-40.6 |
≤2 | For 15 cycles of freezing and thawing, Particle with no any change at-20°C
| 0.53-0.63 |
Alkali-resisting |
USAGE:
VERMICULITE IN INDUSTRY
1. GASKETS OR SEALS
2. FIREPROOFING
3. INSULATION IN STEELWORKS AND FOUNDRIES
4. PACKING MATERIALS
5. ANIMAL FEEDSTUFFS
6. FRICTION LININGS
7. REFRACTORY PRODUCTS
VERMICULITE IN AGRICULTURE
1. SOIL IMPROVEMENT
2. FERTILIZER CARRIER
3. HORTICULTURE
4. HYDROPONICS
VERMICULITE IN CONSTRUCTION INDUSTRY
1. BITUMEN COATED VERMICULITE PLATES
2. CONSTRUCTION COATINGS
3.LIGHTWEIGHT CONCRETES
4.LOOSE FILLINSULATION
5.VERMICULITE PLASTERS
6. FIREPROOF BOARD
