Process for recovering metal and non-metal materials from copper enriched electronic waste

Abstract

A process for recovering metal and non-metal from waste electronic material richly containing copper includes such steps as spraying water on waste, crushing, pulverizing, gravitational separating in shaker with water, casting electrolytic anode with the separated metal powder, electrolyzing to extract pure co9pper, and wet metallurgy for extracting Au, Ag, Pt and Pd. Its advantages are low exhaustion of tail gas and dust, and high efficiency.

Description

technical field [0001] The invention relates to a recycling and processing technology for electronic scraps, in particular to a process for recycling metals and nonmetals from copper-rich electronic scraps. Background technique [0002] At present, there are mainly three types of methods for processing copper-rich electronic waste and recovering metals in the prior art: [0003] One is fire recycling, which uses incineration to directly incinerate copper-rich electronic waste, burn the combustible part of copper-rich electronic waste, and then recycle the remaining slag. [0004] The incineration method is used to obtain metal-containing alloy ingots, which will produce harmful gases such as dioxins during incineration, which will cause serious air pollution. Simultaneously the non-metal part is also burned and wasted. This type of method burns too many combustibles, and the tail gas and smoke generated during combustion need to be treated, which is expensive. Otherwise i...

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Problems solved by technology

For example: "A.luga, R.Morar, A.Samuila and Dascalescu, Electrostatic separation of metals and plastics from granular industrial wastes, IEE.Proc-Sci.Meas.Technol.Vol.148, No.2.March 2001" published An electrostatic separation technology for separating metals and plastics from waste, material recovery (recovery rate: copper 92.2%, containing The amount of PVC is less than 0.04%, the recovery rate of PVC is 90.8%, and the copper content is less than 0.1%). The main disadvantage is that the investment cost is too high

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