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.
