Gypsum, ammoniumhydrogen 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。
2
Formed as a sublimate (mixed with ammoniumhydrogen carbonate) when calcium carbonate and ammoniumsulfate (or chloride) are heated together.