Developed pollution-free and environmentally friendly recycling technologies and equipment such as combined crushing-multistage separation-vacuum metallurgical separation with independent intellectual property rights for waste circuit boards, classified semiconductor carriers, toner cartridges, refrigerators, batteries, automotive plated plastics, etc.; Invented high value-added resource technologies such as crushing and dissociation, sorting and enrichment, and green chemical extraction of electronic components containing rare precious metals in electronic waste. After more than ten years of research and accumulation, with the support of the National 863 Plan, the National Fund Commission, industry-university-research and other projects, a large number of production practices have been carried out in the fields of dismantling, crushing, sorting and subsequent utilization of waste appliances such as waste televisions, waste circuit boards, waste refrigerators, waste lithium ion batteries, waste toner cartridges, and waste plastics, providing technical and equipment support for the mechanized recycling and treatment of designated dismantling enterprises of used home appliances. It mainly includes: (1) Manual dismantling of large household appliances + mechanical automated processing + subsequent environmentally friendly disposal of mechanized dismantling of waste TVs: manual dismantling of waste CRT TVs + dismantling systems such as mechanical transmission; Cutting and separating device between LCD panels and TV chassis; robotic removal and peeling of LCD; disassembly of other parts; suitable for automated dismantling of waste TVs. Crushing system: Different types of electronic waste need to adopt different crushing processes, and highly targeted and efficient crushing devices are developed; multi-level crushing process combination and optimization are used to achieve the dissociation of different materials in electronic waste. Mechanized dismantling of electronic components on used circuit boards: research on heating processes such as air/resistance wire; mechanical separation methods such as rotation/vibration/impact; purification process of heated air, etc. Separation of metal and non-metallic components: design and optimization of high-voltage electrostatic/eddy current separation/wind separation and other processes; optimization of separation processes such as rotation speed, electrode, voltage, and wind speed; development of auxiliary systems such as feeding system and dust removal system; Suitable for separation of metals from non-metallic components such as plastics and resin powder. Environmental risk assessment of e-waste recycling process: detection device for volatile pollutants under heating conditions; toxic leaching device for different types of e-waste; environmental risk assessment for preparing recycled materials from various plastic and non-metallic materials; Evaluate the e-waste recycling process based on different risk factors.  (2) Vacuum metallurgical process for refining rare precious metals in mixed metal particles: including the development of vacuum heating devices; vacuum condensation and separation devices; the impact of heating temperature/vacuum degree/condensation conditions on the recovery of rare precious metals; separation and purification of metals such as metal mixed particles and rare earth raw materials containing rare precious metals. Chlorination method: Including the design of the leaching reactor; the selection of leaching agents and the optimization of process methods; it can be used to separate and purify metal elements such as gold and copper in mixed metal particles, with huge market potential.  

The complete sets of equipment developed have been industrialized in the classified carrier destruction centers of central and state agencies, Shanghai, Jiangsu, Guangdong, and Zhejiang, destroying classified semiconductor carriers since 2011 such as central and state agencies, the military, Hong Kong, Macao, and Taiwan Affairs Office; Since 2012, more than 5 million units of electronic waste have been processed, totaling more than 100,000 tons. Provide key technologies and important equipment to solve the safe destruction of electronic information in the national security system and the major needs of the industry, efficiently utilize secondary resources of electronic waste, protect the ecological environment, and play a positive role in promoting the development of the circular economy industry.