浅述磷石膏水洗过滤工艺

磷石膏制硫酸铵是磷石膏综合利用的又一新途径，磷石膏是磷工业的副产物，其中含有磷、氟和有机物等杂质，磷石膏水洗过滤工艺可把磷石膏中的游离磷酸浓度控制在一定的范围内，作为原料供给生产硫酸铵装置使用，即解决磷石膏堆放污染问题，又起到循环利用促进经济的效果，为我国磷化工行业的进步及发展起到积极推动的作用。

The phosphorus gypsum washing and filtration process

The phosphogypsum ammonium sulfate is another new approach in comprehensive utility of phospho- gypsum, that is byproducts from phosphorus industrial, which contains impurities such as phosphorus, fluorine and or- ganics. The washed filtration process for phosphogypsum may control the free phosphate concentration in a certain range, as the supply of raw materials to produce ammonium sulfate device use phosphogypsum pile solving pollution problems, and to make recycling promote economic effect, to play a positive role to promote the progress and develop- ment of phosphorus chemical industry in China.