XinLong Vermiculite

CHARACTERISTIC AND USE

Vermiculite is a mineraloid of hydrated laminar magnesium-aluminum-ironsilicate. Its chemical composition greatly varies and chemical formation could be simplified as Mgx(H2O){ Mg3-x[AlSiO3O10](OH)2}. When heated to a temperature of about 850-950C,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.

IN CONSTRUCTION

The expanded vermiculite can be used as a kind of material with the properties of lightweight, heat preservation, heat insulation, sound absorbing, fireproof. It can be used to produce bitumen coated vermiculite screeds, construction coatings, lightweight concrete, etc.

IN AGRICULTURE AND HORTICULTURE

Vermiculite is commonly used as growing medium providing ideal conditions for plant growth. Furthermore, vermiculite is also used as a carrier and extender for herbicides and pesticides making products with a well free flowing property. The expanded vermiculite is used in sand , peat and infertile soil and it is a major element in hydroponics growing system.

IN ENVIRONMENT PROTECTION

Vermiculite can be used as the sorbent and used to the disposal of the waste water and the depuration of the exhaust gas.

IN STOCK RAISING

The expanded vermiculite can be used as the additive of the animal feedstuff.

IN STEELWORKS AND FOUNDRIES

Sifting the vermiculite into the steel smelter, it can prevent the steel-iron solution from acidification and get rid of the scoria.