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Method for recovering waste household appliances by harmlessness and reclamation

A recycling method and recycling technology, applied in the field of harmless recycling of waste household appliances, to achieve the effect of simple equipment, convenient operation, and good promotion value

Inactive Publication Date: 2010-05-19
陆刚萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, these technologies mostly recover economically valuable substances in waste (that is, recycling), but do not involve waste and pollutants in waste recycling (that is, harmless)

Method used

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  • Method for recovering waste household appliances by harmlessness and reclamation
  • Method for recovering waste household appliances by harmlessness and reclamation
  • Method for recovering waste household appliances by harmlessness and reclamation

Examples

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0047] 1. Manual disassembly classification

[0048] Disassemble waste TV sets, washing machines, air conditioners, refrigerators, computers, mobile phones, etc. manually. First remove the picture tube of the TV and disassemble the CRT glass, electron gun, deviation coil, and substrate; then first recycle the Freon CFC (refrigerant) of the air conditioner and refrigerator with a heating tank; the rest are disassembled together with the washing machine Solutions: printed circuit boards, metal-plastic bodies, metal bodies, plastic sheets, copper pipes, copper wires, heat exchangers, compressors, motors, etc. The above-mentioned objects can be reused if they pass the test or inspection, and those that fail to pass must be disposed of.

[0049] 2. Treatment of CRT glass:

[0050] 1. Crushing: Break the CRT glass into pieces with a coarse crusher...

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Abstract

The invention relates to a method for recovering waste household appliances by harmlessness and reclamation. The method comprises the following steps of: disassembling and classifying waste household appliances; carrying out harmless treatment on CRT glass obtained by classifying in the disassembling and classifying step; treating chlorofluorocarbon (CFC) recovered in the disassembling and classifying step; treating printed circuit boards and metal plastics obtained by classifying in the disassembling and classifying step: firstly, separating out plastics and metal; then carrying out acid leaching on the metal; next, sequentially carrying replacement on leaching liquid to extract Ag, electrolysis to extract Cu and alkali fusion to extract Au; and recovering intermediate products generated in the treatment process. The method can sufficiently and harmlessly treat displays, circuit boards, and the like and sufficiently extract resources such as Hg, Cu, Fe, Sn, Pb, Au, Ag, plastics, trace Cd, and the like. The method avoids new pollutants generated by disposal, and used reagents have no poison and low price, thus the method has good industrial promotional value, better environmental benefit, economic benefit and social benefit and wide development prospect.

Description

Technical field: [0001] The present invention is a harmless resource recovery method for waste household appliances, and specifically relates to a harmless resource recovery method for waste household appliances such as televisions, washing machines, refrigerators, air conditioners, computers, and mobile phones. Chemical disposal, and recycling of gold, silver, copper, lead, tin and other metals. Background technique [0002] The impact of waste household appliances on the environment has two aspects: one is the potential of environmental pollution, and the other is the resource nature of the recycling of renewable resources. As far as one is concerned, the circuit boards in waste household appliances contain lead and cadmium, mercury in flat-screen displays, polyvinyl chloride in capacitors and converters, and brominated flame retardants in circuit boards are all harmful to the human body. In terms of two, 1 ton of typical waste household appliances contains Cu 20%, Fe 8%,...

Claims

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Application Information

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IPC IPC(8): B09B5/00B09B3/00
CPCY02W30/20Y02W30/82
Inventor 陆刚萍郭英涛
Owner 陆刚萍
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