| 摘要 |
<p>PURPOSE:To recover metals quickly and efficiently on a cathode by subjecting a soln. dissolved therein with metals to electrolytic reaction to electrodeposit dissolved metals on electric conductive granular materials, then dissolving the same in an aq. cyanide soln. under the presence of air and electrolyzing the same. CONSTITUTION:This recovering device consists of an electrolytic reacting device A and an electrolytic recovering device B. A waste plating soln. 2 dissolved, for example, gold and silver is introduced through a conduit 3 into a storage tank 1. While the soln. 2 is circulated, an electric power source 15 is turned on to effect electrolytic reaction in a cathode chamber 10, so that gold and silver are electrodeposited on electrically conductive granular materials 13. After the residual waste soln. in an electrolytic cell 7 is discharged, an aq. cyanide soln. 19 is circulated in an electrolytic chamber 16 to dissolve the gold and silver deposited on the materials 13 in the soln. 19. When the concn. of the gold and silver increases in the chamber 16, the switch 22 of an electric power source 21 is turned on to effect electrolytic reaction so that the gold and silver are deposited on a cathode 18 whereby the gold and silver are recovered as a dense metallic plate.</p> |
