| 摘要 |
<p>.- The metal value separation efficiencies of aliphatic .alpha.-hydroxy oximes in solvent-extraction processes are enhanced by the addition to the solvent-extractant of an alkyl aromatic sulfonic acid having a molecular weight of at least about 400, the mole % of the sulfonic acid in the combined sulfonic acid and hydroxy oxime being in the range of 10 to 80. Especially important applications for the improved solvent extractant are in the separation and recovery of copper from iron, nickel from iron, nickel from cobalt, copper from cobalt, copper from nickel, copper from zinc, zinc from nickel, nickel from zinc, zinc from iron and cobalt from zinc in acidic aqueous media.</p> |
