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。
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.
以磷石膏和碳酸铵为原料制备硫酸铵，对反应过程的动力学进行了研究。
In this paper, ammonium sulphate was prepared from phosphogypsum and ammonium carbonate, and the kinetics of the reaction process is studied.
以磷石膏、碳酸氢铵和氨水为原料制备硫酸铵，并用盐酸处理碳酸钙粗品制备氯化钙。
Ammonium sulphate with calcium carbonate as gross by-product could be obtained from the raw materials including phosphogypsum, ammonium bicarbonate and ammonia water.
以磷石膏、碳酸氢铵和氨水为原料制备硫酸铵，并用盐酸处理碳酸钙粗品制备氯化钙。
Ammonium sulphate with calcium carbonate as gross by-product could be obtained from the raw materials including phosphogypsum, ammonium bicarbonate and ammonia water.
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