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磷石膏是湿法制造磷酸以及生产磷铵等化肥的副产物。用湿法生产磷酸时,化学反应如下: [Ca_3(PO_4)_2]_3·CaF_2+10H_2SO_4=6H_3PO_4+2HF+10CaSO_4
Phosphogypsum is a by-product of wet-process phosphoric acid production and the production of fertilizers such as ammonium phosphate. When producing phosphoric acid by wet process, the chemical reaction is as follows: [Ca_3 (PO_4) _2] _3 · CaF_2 + 10H_2SO_4 = 6H_3PO_4 + 2HF + 10CaSO_4