Harmless treatment and resource recovery method and harmless treatment and resource recovery equipment for waste circuit board with components

Abstract

The invention relates to harmless treatment and resource recovery method and harmless treatment and resource recovery equipment for waste circuit boards with components. The equipment comprises a first-level conveyor belt, a compound crusher, a two-level conveyor belt, a permanent magnet deironing separator, an eddy current separator, a three-level conveyor belt, a two-level hammer crusher, a four-level conveyor belt, a three-level hammer flake type crusher, a material conveying fan, a vibrating separator, a cyclone separator, a bag type dust collector, a draught fan and activated carbon adsorption tower. The method comprises the steps that: crushing the waste circuit boards with components into fragments in the compound crusher, separating out irons through the permanent magnet deironing separator, and separating out copper, aluminum and other nonferrous metals on a belt of the eddy-current separator; entering the two-level hammer crusher for further dissociation and crushing, and separating out irons; and driving the balance of materials to enter the three-level hammer flake type crusher, and fully crushing the materials into powder with 60-100 meshes to the vibrating separator. The method and equipment have the advantages that the investment is few, the energy consumption is low, the running cost is low, and the process and the operation are simple, and the production efficiency can be greatly improved and no secondary pollution is caused.

Description

technical field [0001] The invention relates to the field of environmental protection methods, equipment and renewable resources, in particular to a method and equipment for harmless treatment of waste circuit boards with components and resource recovery. Background technique [0002] As an important component of electronic waste, waste printed circuit boards contain various heavy metals and harmful substances such as lead, cadmium, polyvinyl chloride plastic, and brominated flame retardants on the one hand, which have potential environmental pollution; on the other hand, they contain copper , gold, silver and other common metals and rare precious metals, with high recycling value. [0003] With the implementation of my country's sustainable development strategy, higher requirements are put forward for environmental protection, and the recycling and utilization of electronic waste has become a thorny issue faced by most countries. At present, my country has become a big cou...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a method and equipment for harmless treatment and resource recovery of waste circuit boards with components in view of the current situation and existing problems in the treatment of waste circuit boards with components in the above-mentioned prior art, The manufacturing cost and operating cost of the equipment are low, the process is simple, the operation is easy, there is no dust, no gas leakage, no waste water, no waste residue discharge, no secondary pollution, safety and environmental protection, and high resource recycling rate

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