Vermiculite layer structure of magnesium aluminum silicate secondary water metamorphic minerals 2)Impurity: 10%

1 Brief Introduction :

Vermiculite is a kind of layer structure of magnesium aluminum silicate secondary water metamorphic minerals, ore outside like mica, usually by black mica (gold) by the weathering of hydrothermal alteration effect or, it is because of the hot water expands flexure, form resembles leeches, therefore calls vermiculite.

Vermiculite, chemical formula M g × (H2O) [Mg3 × (AlSiO3O10) (H2O)], is a magnesium water inclouded aluminum silicate secondary metamorphic minerals of layered structure. It likes mica in form, and usually come from weathered or hydrothermal alterated black (gold ) Mica. It will present a deflection shape after heat expansion and water loss, liking a leech pattern in form , so it gets the name vermiculite

2 Applicable Place

3 Advantage

1)Expansion ratio:5-20 times

2)Impurity: 10%

3)Moisture: 5% max

4)Heat-resistant,

5)corrosion-resistant,

6)well-ventilation,

7)water preservation,

8)poisonless,odorless,

9)low hardness,

10)burning-avoidness,

11)Lighter.

12)non-asbestos ,

13)Low density etc

4 Material Composition

Vermiculite is a natural, non-toxic mineral, swells of minerals under high temperature. It is a very rare mineral, belongs to the silicate. Its crystal structure is monoclinic system, from the appearance it looks like mica. Vermiculite is a granite hydration. It generally comes with asbestos. Because of vermiculite with ion exchange capacity, it is of great effect on soil nutrition.

5 Specification

Vermiculite chemicals

Expanded gold vermiculite size

Expanded silver vermiculite size :

Special size is supplied as per customer’s demands

3.Exfoliated vermiculite chemicals

1 A Not expansion golden silver: 0.3-1mm 1.5-2mm 0.7-2mm 2-4mm 4-8mm 3-6mm

B Silvery white: 0.1-0.6 0.3-1 1-2 2-4 3-6 4-8

Inflation, Two colors are the same 20-40mesh（目）40-60mesh 60-80mesh 1-2mm 2-4mm 3-6mm 4-8mm

6 FOB Price:US $ 35 - 250/ Metric Ton