Method for directly separating copper and tin alloy mixture by electrolysis

Abstract

The invention discloses a method for directly separating a copper and tin alloy mixture by electrolysis. The method comprises the steps: compressing the copper and tin alloy mixture into an anode plate, then putting the anode plate into an electrolytic bath to be connected with the anode of an electrolyzed power supply, and connecting a cathode plate with the cathode of the electrolyzed power supply; and electrolyzing copper, enabling copper in the mixture to be electrolyzed into electrolytic copper, therefore enabling tin alloy in the mixture to fall out from anode to enter an electrolyte solution, and thus realizing separation of copper and tin alloy. The method can save a lot of energy and has no pollution caused by fusion, and particularly some metal impurities discharged to air in thepast can obtain resource utilization at present. Compared with the prior art, the method has significant progress and far-reaching social significance.

Description

technical field [0001] The invention relates to a method for separating copper and tin alloy mixture, in particular to a method for directly separating copper and tin alloy mixture by electrolysis. Background technique [0002] Nowadays, with the continuous improvement of people's living standards, the amount of waste home appliances is also increasing, and there are more and more recycling technologies for waste home appliances. One of the methods is to use the crushing method to separate and recycle waste circuit boards after being broken. . After pulverization, copper and tin alloys such as solder mixture can be separated from it, but this mixture is currently difficult to directly recycle. Only after the solder and copper in it are separated can it be effectively recycled. Although there are related solder recovery and separation technologies in the prior art, such as the patent application number 201410522965.7 filed by the Chinese Patent Office on October 06, 2014, t...

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Problems solved by technology

Although there are related solder recovery and separation technologies in the prior art, such as the patent application number 201410522965.7 filed by the Chinese Patent Office on October 06, 2014, the title of the invention is "A Method for Electrolytically Separating Copper and Solder Mixture". Although it can also achieve the effect of separating copper and solder mixture, when the electrolysis reaches a certain level, the particle size of copper powder will become smaller and smaller. On the one hand, it will leak from the net into the electrolytic tank, reducing the recovery rate of copper; On the other hand, since the proportion of copper powder in the mixture is getting smaller and smaller, the electrolysis voltage must be increased to ensure the continuation of electrolysis, thereby increasing the energy consumption of electrolysis

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