Solvent extraction and electrowinning of zinc and copper from sulfate solution

摘要

A process for separating zinc and copper values from an aqueous solution of copper and zinc salts having a pH of between about 0. 5 and 6 is provided comprising:PPA. CONTACTING SAID AQUEOUS SOLUTION WITH THE COPPER SALT OF DI-(2-ETHYLHEXYL) PHOSPHORIC ACID TO FORM A ZINC- CONTAINING ORGANIC PHASE AND A COPPER-CONTAINING AQUEOUS PHASE;P PB. SEPARATING SAID ZINC-CONTAINING ORGANIC PHASE FROM SAID COPPER-CONTAINING AQUEOUS PHASE; ANDP PC. STRIPPING SAID ORGANIC PHASE TO FORM A SOLUTION OF A ZINC SALT AND DI-(2- ETHYLHEXYL) PHOSPHORIC ACID.