A multi-stage efficient screening method for waste circuit board particles

Abstract

The invention relates to the technical field of solid waste destroying or converting the solid waste into useful or harmless articles, and discloses a multistage efficient screening method for waste circuit board particles. The multistage efficient screening method comprises the following steps that S1, electronic elements are split from a waste circuit board; S2, the waste circuit board and the electronic elements are correspondingly conveyed into crushing equipment, and the electronic elements with the appearances which are not damaged are manually sorted out; S3, the waste circuit board andthe electronic elements are crushed into the particles; S4, strong magnetic metal particles are screened through a first electromagnet; S5, a mixture of non-magnetic metal particles and non-metal particles and paramagnetic metal particles are screened out; S6, the non-magnetic metal particles and the non-metal particles are screened out, and the non-metal particles with relatively light weight are screened out; and S7, the ceramic particles in the metal particles are manually screened out. According to the scheme, the structure is simple, and the waste circuit board can be quickly recycled.

Description

technical field [0001] The invention relates to the technical field of destroying solid waste or converting solid waste into useful or harmless things, in particular to a multi-stage and high-efficiency screening method for waste circuit board particles. Background technique [0002] With the rapid development of information technology, information carriers and information materials, the life cycle of electronic products is getting shorter and shorter. Waste circuit boards are a typical type of electronic waste. Although waste circuit boards are waste, waste circuit boards and Electronic components on waste circuit boards contain recyclable metals such as Fe and Ni. If they cannot be recycled properly, a lot of resources will be wasted. At the same time, waste circuit boards also contain a large amount of harmful substances, which can enter the environment through water, air, soil, etc., causing irreversible harm to the environment. [0003] Therefore, we need a good recycl...

AI Technical Summary

Problems solved by technology

However, there are certain problems in the existing mechanical method of recycling: 1. The usable electronic components are not recycled, that is, the usable electronic components are directly crushed; 2. The mechanical method generally combines waste circuit boards and electronic components Crushing, which may cause incomplete crushing of waste circuit boards; 3. There are plastic wastes in the screened recyclable metal particles

Images