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Vermiculite

Vermiculite is a gibbsite silicate mineral. After heating, it becomes yellow, or white. When it is heated to 850°C-950°C, it will lose its water and expand which volume will increase to 8-15 times. It possesses the characteristics of flameproof, thermal insulation, sound absorption, nontoxic, low capacity, wet absorption, anti-fugi, etc.. It is used in such industries as construction, chemical industry, petroleum, electronics, light industry, environment protection, agriculture, and landscape virescence.
Chemical elements

Element	SiO2	Al2O3	Fe2O3	CaO	MgO	TiO2	FeO
Content	4l.2	12.68	4.06	1.54	0.96	24.22	1.54
Element	P2O5	H2O	Ma 2 O	M nO	TiFeO	K2O	Burn lost
Content	0.06	2	1.6		5.71	5.97	6.71

Specification and quality of vermiculite fine minera

Spe.	Expansion times	Impurity content %	Water content %	Color
3.5 -7mm	7	7	8	Yellow
1.5 -3.5mm	7	7	8	Yellow
0.5 -1.5mm	6	10	8	Yellow
2-4mm	8	8	6	White
l-2mm	8	8	6	White
0.5 -1mm	6	8	6	White

Specification and quality of vermiculite inflated product

Spe.afer swell	Spe. Fine mineral	Capacity kg/m3	water content %	Color
10 -20mm	3.5 -7mm	120	<2	Yellow
4-8mm	1.5 -3.5mm	120	<2	Yellow
2-5mm	0.5-1.5mm	130	<1	Yellow
8- 16mm	2-4mm	100	<2	White
5-10mm	1 -2mm	100	<2	White
3 - 6mm	0.5 - 1 mm	110	<2	White

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