General Introduction
Vermiculite is a mineraloid of hydrated laminar magnesium-aluminum- iron silicate. Its chemical composition greatly varies and chemical formation could be simplified as(Mg,Fe,Al)3(Al,Si)4O10(OH)2·4H2O. When heated to a temperature of about 850-950°C, 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.
Our vermiculite essential has the following characteristics:
-PH 7 max.
-Asbestos-free
-Thermal conductivity: 0.045-0.06 Calorie/M
-Unit weight: Approx.0.9kg/M3
-Tensile strength: 1,000-1,500kgs/CM2
-Hardness: 1-1.8
Vermiculite Application
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About Our Company
Shijiazhuang Mining Imp&Exp Trade Co.,Ltd. owns self import and export right. Our company has strong economic base.Now we have one sepiolite mine and one vermiculite mine.The mining capacity is 60,000 tons per year. Besides,our company has own sepiolite factory and vermiculite factory. The production capacity is 30,000 tons per year.Our products are mainly exported(above 80%) and also sold domestically. Our market covers various countries and regions likeUSA,Germany,France,Italy,Mexico,Singapore,Malaysia,Japan, South Korea, Taiwan etc. The market share is growing rapidly and firmly.
contact
1.Tel: 86-311-85860330
2.Fox: 85860332
3.Website:www.sjzmining.com