| 摘要 |
<p>The invention relates to a process for the purification of a zinc sulphate solution in which, after the separation of the iron, Cu and Cd are substantially completely precipitated with zinc and separated and subsequently, using a limited quantity of zinc, traces of antimony compound and a copper compound in such a quantity that the copper/cobalt weight ratio is at least 0.2, but with a maximum corresponding with 200 mg of Cu per liter of solution, the Co still present in the solution is precipitated and separated; to zinc sulphate solution obtained in this manner and to zinc prepared therefrom.</p> |
