| 摘要 |
<p>Purification of impure copper tellurium precipitate formed in the electrolytic purification of copper, comprises totally purifying copper tellurium precipitate on a sulfuric acid base; further leaching of the leaching residue to dissolve final copper and tellurium; removing dissolved impurities and cementing tellurium from solution in non-oxidizing conditions. Purification of impure copper tellurium precipitate formed in the electrolytic purification of copper, comprises totally purifying copper tellurium precipitate on a sulfuric acid base, where part of the copper is firstly removed from the precipitate by leaching in dilute sulfuric acid solution; further leaching of the leaching residue in sulfuric acid solution to dissolve the final copper and tellurium; removing impurities, e.g. chlorine and selenium, which have dissolved in the solution and cementing tellurium from solution in non-oxidizing conditions, where the final product is a copper tellurium alloy, of which tellurium content is 80-100% and the standard of purity is sufficient for an initial alloy manufacture used for the manufacture of tellurium copper.</p> |
