Raw Vermiculite

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

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
<3

2
2.5-4
190
450
<3

3
<2.5
200
420
<4



Primary chemical compositions:


Compositions
SiO2
Al2O3
MgO
Fe2O3
CaO
PH
H2O


Contents:(%)
37-42
9-17
11-23
5-18
0.5-0.8
8-11
<1



Szes of Vermiculite:
Non-expanded standard

types
No.3
No.4
No.5
20 M
32 M
70 M

sizes
3.5-7mm
1.5-3.5mm
<1.5mm
+900ª¦,<3%
+710ª¦,<4%
+250ª¦,<5%



Expanded standard

types
sizes

5 M
<5mm

10 M
<2mm

12 M
<1.5mm

20 M
+900ª¦,<5%

40 M
+450ª¦,<5%

100 M
+150ª¦,<5%

200 M
+75ª¦,<5%

325 M
+45ª¦,<5%

1,250 M
+10ª¦,<10%.



Bulk Bag or 25 kg plastic bag.

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