P204萃取脱除铜精矿浸出液中铁

从含砷硫化铜精矿浸出液中萃取除铁是后续制备砷酸铜的一道工序，P204可从硫酸介质中选择性地萃取铁离子. 实验结果表明，当有机相组成中P204为30%(j)，相比1:1, pH"1时，通过三级萃取，铁的萃取率达93%以上，铜和砷几乎不被萃取，萃余液中残铁含量降至9 mg/L以下.

Removal of Fe3+ by Solvent Extraction with P204 from Bacterial Leaching Solution of Copper Concentrate Ore

Using solvent extraction to separate Fe3+ from the leaching solution of arsenic-bearing sulfide copper concentrate ore is an important step of the process for preparing copper arsenate. P204 can extract Fe3+ from sulphate solution selectively. Under the conditions of extraction temperature at 25℃, phase ratio at 1?, aqueous pH at 1, concentration of P204 in kerosene being 30% (j), and 3-stage extraction, Fe3+ is extracted up to 93%, Cu and As are hardly extracted, and the content of Fe3+ in raffinate is under 9 mg/L.