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公开(公告)号:US5770034A
公开(公告)日:1998-06-23
申请号:US676442
申请日:1996-07-08
摘要: An apparatus for desilvering silver-containing solutions comprises an electrolytic cell (10) having an anode (20), a cathode (30) and a reference electrode (45) positioned adjacent the cathode (30), and electrical power supply control means (41) for controlling the supply of electrical power to the anode (20) and the cathode (30). The power supply control means (41) includes means (60) for adjusting the cathode potential and control means (70) linked to said adjustment means (60) to reduce the cathode potential, at least periodically, as the desilvering process continues. The process leads to better silver adhesion on the cathode occurs, while maintaining good desilvering levels in the solution, and cathode poisoning is minimised.
摘要翻译: 一种用于脱银含银溶液的设备包括具有阳极(20),阴极(30)和邻近阴极(30)定位的参比电极(45)的电解槽(10),以及电源控制装置 ),用于控制向阳极(20)和阴极(30)供应电力。 电源控制装置(41)包括用于调节阴极电位的装置(60)和连接到所述调节装置(60)的控制装置(70),以便在脱银过程继续时至少周期性地减小阴极电势。 该过程导致在阴极上发生更好的银粘附,同时保持溶液中良好的脱盐水平,并且阴极中毒最小化。