Removal of Fe~(3+)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 1:1, aqueous pH at 1, concentration of P204 in kerosene being 30% (-), 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.