| 摘要 |
<p>The invention relates to a process for recovery of metals from metal/plastic waste using used etching and washing solutions from the electronics industry, with the following process steps: (a) heating of the metal/plastic waste in a heating bath in order to separate the metal from the plastic; (b) dissolution of the metal component in the optionally regenerated etching and washing solutions; (c) conversion of the dissolved metal component into the sulfate through treatment with ion exchanger; (d) electrolytic deposition and, if appropriate, selective separation of the metal component into the individual metals, and (e) regeneration of the ion exchanger with reformation of the reusable etching solution.</p> |
