亚磷酸母液中除铁离子的研究

The Study of Removing Iron Ion From Aqueous Phorous Acid

选择适当的沉淀剂 ,从亚磷酸母液中除去 2价和 3价的铁离子。然后将亚磷酸母液浓缩结晶 ,经检验 ,亚磷酸含量≥ 96 % ,铁离子浓度 4× 10 -6～ 7× 10 -6。

The proporational precopitating agent had been choiced for removing iron ion from the solution of phosphorous acid. Then the solution of phosphorous acid was concentrated and crystallizated. The content of the obtained phosphorous acid was beyond minty-six percent and the concentration of iron ion was in the rang of 4～7ppm.