General Description:
Vermiculite {(Mg, Fe, Al)3(Al, Si)4O10(OH)2 - 4H2O, Hydrated Magnesium Iron Aluminum Silicate Hydroxide} is an important member of the Montmorillonite/Smectite Group, members of which also belong to the larger general group known as the Clays. Vermiculite is also sometimes placed in the Mica Group, although recent analysis has excluded it from this group. Vermiculite is basically overly hydrated biotite or phlogopite. Natural specimens originated as these minerals and later altered to vermiculite through weathering or hydrothermal processes. Vermiculite typically forms small platy mica like crystals. These crystals contain water in their structures and when heated to above 870C, the water turns into steam causing the crystals to expand rapidly. The volume increase can be 2000 to even 3000%.
Appearance: Flakes or powder
Applications
Vermiculite is very useful for many industrial purposes. It is very lightweight, chemically non-reactive, fire resistant and odorless. Vermiculite can be used to soak up such toxic liquids as fertilizers, herbicides and insecticides. It is this ability that is also being put to good use as a bedding for pets and livestock. In addition, vermiculite can be used in concrete and ceramics as a heat resistant additive.
Important Properties
Vermiculite is usually brown to golden brown, also white, colorless or yellow. Luster is pearly to greasy. Its Crystals are translucent and Crystal System is monoclinic; 2/m. Its Crystal Habits include pseudohexagonal tabular crystals or "books", also found in compact or lamellar masses or microscopic crystals. The Cleavage is perfect in one direction, basal. Fracture is uneven to lamellar. The Hardness is 1.5 (can sometimes leave marks on paper). The Specific Gravity is 2.3 (below average). Its crystals expand to many times their original volume when heated. Best Field Indicators are softness, color, luster and expandability when heated.
Grades
Size Densities Equivalent names/designations
mm in kg/cu m lb/cu ft System A System B
16 5/8 down 56-72 3.5-4.5 NA Premium (6)
8 5/16 down 64-85 4.0-5.0 1 Large (4)
4 5/32 down 72-90 4.5-5.5 2 Medium (3)
2 0.08 down 75-112 4.7-7.0 3 Fine (2)
1 0.04 down 80-144 5.0-9.0 4 Superfine (1)
0.5 0.02 down 90-160 5.6-10.0 5 Micron (0)
In addition to the standard range of vermiculite product above GREAT WALL MINERAL can manufacture vermiculite grades tailored to customers specific requirements.
For more detailed information please contact the expanded vermiculite manufacturer GREAT WALL MINERAL.
Jumbo bags: 1 cubic meter
Raw vermiculite: An inorganic, naturally occurring mineral with remarkable heat resistance and insulation properties. Lightweight and expandable: When heated, raw vermiculite expands, making it an ideal additive for construction materials. Fire-resistant: With a high melting point, it\'s an effective fireproofing material. Excellent moisture retention: Raw vermiculite\'s moisture-absorbing qualities make it valuable in horticulture and gardening. Natural insulation: Used for its insulating properties in the construction industry, it helps conserve energy and improve thermal performance.
1. Variety:raw and expanded 2. Color:golden and silver 3. Size:0.3-1mm 1-2mm 2-4mm 20-40mesh 40-60mesh 60-80mesh and any size can customize 4. Expansion ratio:8 min 5. Asbestos:none 6. Impurity content:10% max 7. Physical and chemical index: Density : 220-280kg/m3 Porosity: 1100-1200kg/m3 Hardness: 1-1.5 Melting point:1320-1370C Compressive ressitance:100-150Mpa Index of refraction: Ng=1.545-1.581 Moisture conten: 7% max Moisture absorbency: 2% Anticongelation: good Antibioticity: good Corrosion resistance: Alkali-resitant. 25kg per woven bag or 1ton per woven bag Any others aslo can customize as your need.
Vermiculite is a hydrated magnesium aluminum silicate mineral with the formula, (Mg,Fe+2,Fe+3)3[(Al,Si)4O10](OH)2 4H2O. It undergoes significant expansion when heated. Exfoliation occurs when the mineral is heated sufficiently, and the effect is routinely produced in commercial furnaces. Vermiculite can withstand up to 1200 degrees Celsius. It is an excellent thermal and acoustic insulator, capable of retaining moisture for a longer time. It had a neutral pH of 7, thereby doesn�??t react with any compounds or materials.
Vermiculite is a hydrated magnesium aluminum silicate mineral with the formula, (Mg,Fe+2,Fe+3)3[(Al,Si)4O10](OH) 4H2O. It undergoes significant expansion when heated. Exfoliation occurs when the mineral is heated sufficiently, and the effect is routinely produced in commercial furnaces. Vermiculite can withstand up to 1200 degrees Celsius. It is an excellent thermal and acoustic insulator, capable of retaining moisture for a longer time. It had a neutral pH of 7, thereby doesn't react with any compounds or materials.
Vermiculite is a hydrated magnesium aluminum silicate mineral with the formula, (Mg,Fe+2,Fe+3)3[(Al,Si)4O10](OH)2 4H2O. It undergoes significant expansion when heated. Exfoliation occurs when the mineral is heated sufficiently, and the effect is routinely produced in commercial furnaces. Vermiculite can withstand up to 1200 degrees Celsius. It is an excellent thermal and acoustic insulator, capable of retaining moisture for a longer time. It had a neutral pH of 7, thereby doesn�??t react with any compounds or materials.
Vermiculite is a hydrated magnesium aluminum silicate mineral with the formula, (Mg,Fe+2,Fe+3)3[(Al,Si)4O10](OH) 4H2O. It undergoes significant expansion when heated. Exfoliation occurs when the mineral is heated sufficiently, and the effect is routinely produced in commercial furnaces. Vermiculite can withstand up to 1200 degrees Celsius. It is an excellent thermal and acoustic insulator, capable of retaining moisture for a longer time. It had a neutral pH of 7, thereby doesn't react with any compounds or materials.
Vermiculite Physical properties before expanding: Appearance:exfoliated,flake or superposed flake.It contains 10,000 slices in the thick of 2.54cm. Luster:pearl luster,grease luster,no luster,surface dinginess and various luster. Color:goden yellow,brown,brown and green,dark green,black,variedness and striation white. Bulk density:2.2-2.8 g/cm3 Hardness:1-1.5 Bulk density:1,100-1,200 kg/m3 Melting point:1,320-1,350 C degree Intensity of pressure:100-150 Mpa Moisure:7% Appr. Physical properties after expanding: Grade size (mm) Bulk density (kg/m3) water absorption (%) impurity (g/m3) 1 >4 145 475
General Description: Vermiculite {(Mg, Fe, Al)3(Al, Si)4O10(OH)2 - 4H2O, Hydrated Magnesium Iron Aluminum Silicate Hydroxide} is an important member of the Montmorillonite/Smectite Group, members of which also belong to the larger general group known as the Clays. Vermiculite is also sometimes placed in the Mica Group, although recent analysis has excluded it from this group. Vermiculite is basically overly hydrated biotite or phlogopite. Natural specimens originated as these minerals and later altered to vermiculite through weathering or hydrothermal processes. Vermiculite typically forms small platy mica like crystals. These crystals contain water in their structures and when heated to above 870C, the water turns into steam causing the crystals to expand rapidly. The volume increase can be 2000 to even 3000%. Appearance: Flakes or powder Applications Vermiculite is very useful for many industrial purposes. It is very lightweight, chemically non-reactive, fire resistant and odorless. Vermiculite can be used to soak up such toxic liquids as fertilizers, herbicides and insecticides. It is this ability that is also being put to good use as a bedding for pets and livestock. In addition, vermiculite can be used in concrete and ceramics as a heat resistant additive. Important Properties Vermiculite is usually brown to golden brown, also white, colorless or yellow. Luster is pearly to greasy. Its Crystals are translucent and Crystal System is monoclinic; 2/m. Its Crystal Habits include pseudohexagonal tabular crystals or "books", also found in compact or lamellar masses or microscopic crystals. The Cleavage is perfect in one direction, basal. Fracture is uneven to lamellar. The Hardness is 1.5 (can sometimes leave marks on paper). The Specific Gravity is 2.3 (below average). Its crystals expand to many times their original volume when heated. Best Field Indicators are softness, color, luster and expandability when heated. Grades Size Densities Equivalent names/designations mm in kg/cu m lb/cu ft System A System B 16 5/8 down 56-72 3.5-4.5 NA Premium (6) 8 5/16 down 64-85 4.0-5.0 1 Large (4) 4 5/32 down 72-90 4.5-5.5 2 Medium (3) 2 0.08 down 75-112 4.7-7.0 3 Fine (2) 1 0.04 down 80-144 5.0-9.0 4 Superfine (1) 0.5 0.02 down 90-160 5.6-10.0 5 Micron (0) In addition to the standard range of vermiculite product above GREAT WALL MINERAL can manufacture vermiculite grades tailored to customers specific requirements. Jumbo bags: 1 cubic meter, 1.2 Metric Tons
2-4 mm size 1-2 mm size 10 to 15 kgs per bag as per customers requirement
