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目前,我国铜镀层的退除,广泛采用铬酸溶液。众所周知,铬酸溶液是当前治理三废消除污染的主攻目标。尽管许多工厂对含铬废水采取了净化处理措施,投入了大量的人力、物力,也只能治理废液,而不能治理废气,虽能减少一些环境污染,但还是不能从根本上改变工人的劳动条件。要从根本上治理铬酸对环境的污染和改变工人的劳动条件必须从工艺上进行改革。根据焦磷酸盐镀铜中铜阳极板的溶解和铜在磷酸溶液中电解抛光剥落的原理,在含有焦磷酸钾和磷酸的溶液中进行了退铜试验。在试验中观察到,由于直流电源的作用,在阳极上的铜镀层很快溶解成为离子移入溶液中,与焦
At present, the removal of copper plating in our country, the widespread use of chromic acid solution. As we all know, chromic acid solution is currently the main target of eliminating waste from the management of three wastes. Although many factories have taken a lot of manpower and material resources to purify chromium-containing wastewater, they can only manage the waste liquid and can not control the waste gas. Although they can reduce some environmental pollution, they can not fundamentally change the labor of the workers condition. To fundamentally control chromic acid pollution of the environment and change the working conditions of workers must be technically reform. According to the dissolution of copper anode plate in pyrophosphate copper plating and electrolytic polishing of copper in phosphoric acid solution, the copper removal test was carried out in the solution containing potassium pyrophosphate and phosphoric acid. It was observed in the experiment that due to the action of the direct current power supply, the copper coating on the anode quickly dissolves into the ions into the solution,