Gypsum,ammonium hydrogen carbonate and potassium chloride were used as raw materials in this research,to produce potassium sulfate,potassium ammonium chloride and calcium carbonate.

• 以石膏、碳酸氢铵和氯化钾为原料,生产硫酸钾、氯化铵钾和碳酸钙,原料综合利用充分,经济效益好。