The composition. properties, reaction activity, capacity of frothing and defrothing of phosphate rock and the preparation, thickening and clarification of wet phosphoric acid are stutiied.

对胺磷矿的组成和性质，胺磷矿的反应活性、发泡及消泡性能，湿法磷酸制备及磷酸的浓缩和澄清进行了试验研究。