Vacuum continuous separation and recovery device for mixed metals in electronic waste

Abstract

The invention relates to a continuous vacuum separation recovery device of mixed metal of electronic waste. The continuous vacuum separation recovery device comprises a vacuum furnace body, a material heating device arranged in the vacuum furnace body, a discharging device, a continuous feeding device, a condensation collecting device, an electric control device and three sets of pneumatic devices respectively formed by motors and transmission components. A plurality of metal components are respectively evaporated in enclosed environment through vacuum distillation means, pure metal is successive collected by utilizing a multi-station water-cooled condensing coil, and the purpose of disposably separating and recovering mixed metal of copper, lead, cadmium, zinc, and the like of the electronic waste after breaking-sorting is finally achieved. By utilizing the continuous vacuum separation recovery device, the purity of the recovered metal is high, any toxic substances can not be generated in the recovery process, waste water and waste gas can not be released to environment, and the like. The continuous vacuum separation recovery device can contiguously work and is suitable for large-scale industrialized application.

Description

technical field [0001] The invention relates to the technical field of metal recovery and harmless treatment in electronic waste, in particular to a vacuum continuous separation and recovery device for mixed metal in electronic waste. Background technique [0002] With the continuous development of electronic information technology, electronic products have penetrated into all aspects of people's production and life. As a short-life cycle product, the number of scrapped electronic products has also increased exponentially in recent years. It is estimated that there are more than 50 million household appliances such as refrigerators, washing machines, and air conditioners scrapped every year in my country, with an average annual growth rate of 20%. . [0003] In electronic waste, the metal content is as high as about 60%, while in nature, the metal content reaches 3-5%, which can be called a rich ore. The metal contained in electronic waste is dozens or even hundreds of time...

AI Technical Summary

Problems solved by technology

However, the main problem is that the consumption of chemical agents is large, and the treatment of waste liquid will cause secondary pollution. The document "The Current Situation of Electronic Waste at Home and Abroad and Its Recycling Technology" (Wei Jinxiu et al., "Journal of Donghua University" 2005 No. 3 ) introduced the separation of mixed metals by electrolysis

However, harmful gases such as hydrogen fluoride, carbon monoxide, and sulfur dioxide are produced during the electrolysis process, and waste electrolyte seriously pollutes the environment.

Images