Made from ammonium carbonate,gypsym and potassium chl oride, the potassium sulfate and ammonium chloride are empl oyed in high concentration compound fertilizer manufacture as raw materials.

• 从实验出发，以碳铵、石膏、氯化钾生产硫酸钾及氯化铵，并以此产品作高浓复混肥的原料作工程性的探讨。