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Gypsum Fertiliser Manufacturing Process

April 2017 gypsum 1.Introduction gypsum is the common name of hydrated calcium sulfate, which has the chemical formula caso 4.2h 2o.Gypsum is mainly used as a soil ameliorant to improve the structure of sodic and magnesic soils.Gypsum may also be used, at lower rates, as a sulfur fertiliser a calcium fertiliser.