Description

Calcium in nature in the form of gypsum mine existence. Contains two gesso of calcium sulfate (CaSO4●2H2O) gypsum mine called gypsum will be heated to **0℃ gypsum, will lose most of gesso and become plaster(2CaSO4●H2O). Plaster mixed with water into paste will stop quickly, into hard gypsum.Use gesso of this nature, people often use it to produce all kinds of model and medical use on the plaster bandage. In cement production, can be used in cement plaster adjust the coagulation time. In the rich resources of gypsum place can use it to system of sulphuric acid.
Nitrogen fertilizer production analysis of carbon monoxide and carbon dioxide as trace moisture absorption agent. Coating,Artifical ivory.Paint. Paper. The dye,Printing.Metallurgy.Deal with water. As food additives and processing AIDS,Drugs.