The research and application of carboxylic acid collector, phosphoricacid collector and ester collector for phosphorous ore are summarized in this paper.
本文从羧酸类捕收剂、磷酸类捕收剂和酯类捕收剂三个方面，分别综述了磷矿捕收剂的研究和应用进展。
2
The content of mono-ester, di-ester and phosphoricacid in phosphate polyoxyethylene nonylphenol were reported with mixed-solvents by potentiometric titration.
采用混合溶剂，用电位滴定法测定壬基酚聚氧乙烯醚磷酯酯中单酯、双酯、磷酸的含量。
3
This test proved that preparation of phosphoricester is feasible by phosphoricacid direct esterification.