A new clean, energy-saving and environmentally-friendly process for extracting high-grade copper plates from copper-containing wastes by wet method

Abstract

The invention discloses a novel clean, energy-saving and environment-friendly technology for extracting a high-grade copper plate by utilizing waste containing copper, and relates to the technical field of resource recycling. The technology comprises the following steps of: firstly crashing waste containing copper, filling the curshed waste into an anode frame; putting the anode frames filled with raw materials into an electrolytic bath as an anode; arranging a cathode plate between each two anode frames as a cathode; and heating an electrolytic solution, wherein a solution containing an acidic copper sulfate solution and an additive with certain amount is taken as the electrolytic solution, and the electrolytic solution always flows in a circulating mode in the electrolytic bath through an electrolytic solution circulating system; carrying out electrochemical solution of copper on the anode when direct-current electricity passes by in the electrolytic bath, and meanwhile separating out pure copper on the cathode; cleaning the cathode plate containing the finished product electrolytic copper, calculating, detecting and putting in storage to obtain a finished product electrolytic copper for selling; and further recycling and treating anode mud, and recycling the precious metal therein. The technology provided by the invention is simple in step, can effectively recycle the resources effectively, can achieve the copper extraction ratio of 99.99%, has no discharge of waste, is environment-friendly, and is high in economic benefit.

Description

technical field [0001] The invention relates to the technical field of resource recovery and reuse, in particular to a new clean, energy-saving and environment-friendly process for extracting high-grade copper plates from copper-containing waste by wet method. Background technique [0002] Copper is the earliest metal used by humans. As early as prehistoric times, people began to mine open-pit copper mines and used the obtained copper to make weapons, tools and other utensils. The use of copper had a profound effect on the progress of early human civilization. Copper is a metal that exists in the earth's crust and oceans. The content of copper in the earth's crust is about 0.01%. In some copper deposits, the copper content can reach 3% to 5%. Copper in nature mostly exists as compounds, namely copper minerals. Copper minerals are aggregated with other minerals to form copper ore, and the mined copper ore is processed into copper concentrate with high copper content. Coppe...

AI Technical Summary

Problems solved by technology

The physical method mainly uses gravity separation, magnetic separation, electrostatic separation and other methods to separate copper from the metal mixture. The disadvantage is that the recovery rate and grade of copper are not high; the microbial method is not mature enough and is still in the stage of exploration; In the chemical method, rinsing, smelting or chemical solution are mainly used to replace copper ions. These methods have low recovery rate, serious environmental pollution, difficult treatment of waste gas and waste water, and the extracted copper grade is not high, which is difficult. meet international standards

Images