defrothing

1.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.

对胺矿的组成和性质，胺矿的反应活性、发泡及消泡性能，法酸制备及酸的缩和澄清进行了究。