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A kind of circuit board metal recycling method

A recycling method and circuit board technology, applied in combustion methods, electronic waste recycling, recycling technology and other directions, can solve the problems of large residues, high content of corrupt organic substances, and effective purification of environmental pollution components, etc. Low content of organic matter and the effect of preventing pollution

Active Publication Date: 2021-11-12
浙江京城再生资源有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a circuit board metal recovery method to solve the problem that the traditional circuit board pyrolysis residues in the prior art lead to high content of corrupt organic matter and the inability to effectively purify the environmental pollution components produced by pyrolysis technical issues

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  • A kind of circuit board metal recycling method

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Embodiment Construction

[0032] The following will be combined with figure 1 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] The present invention provides a kind of circuit board metal recycling method here by improving, as figure 1 Shown, a kind of metal recovery method of circuit board, wherein, described method comprises the following steps:

[0034] Step 1: Use a crusher to crush the circuit board, and screen the crushed circuit board to ensure that the diameter of the crushed circuit board particles is less than 40mm; it can be crushed by a crusher, and the vib...

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Abstract

A circuit board metal recovery and residue reduction treatment method of the present invention belongs to the technical field of metal recovery methods. The metal recovery method adopts a closed high-pressure reaction kettle and adds a binder solvent to realize copper foil, The layering of glass fiber and substrate reduces the difficulty of subsequent screening and separation of metals and non-metals; melting the ash in the layering can prevent the dissolution of heavy metals and facilitate the subsequent separation of metal copper. The invention realizes the delamination of copper foil, glass fiber and substrate in an oxygen-free environment, and can melt the ash in the above-mentioned delamination, so as to realize the low content of corrupt organic matter. Organic matter is converted into stored energy mainly by pyrolysis of oil and gas and fixed carbon. By optimizing the reaction conditions, environmental pollutants such as sulfur and heavy metals in the substrate can be fixed in the fixed carbon, greatly reducing the occurrence of halogen pollutants. emission.

Description

technical field [0001] The invention relates to the technical field of metal recycling methods, in particular to a circuit board metal recycling method. Background technique [0002] my country is a big producer of electrical and electronic products, but also a big consumer. With the continuous development of the times, the upgrading of electrical and electronic products is getting faster and faster, and a large number of electrical and electronic products have entered the peak period of elimination. According to relevant information, the annual compound growth rate of the world's printed circuit board industry is 8.7%, and that of my country is 14.4%. More than 40% of the circuit boards in the world are produced in China, and the Pearl River Delta and the Yangtze River Delta are the concentration places of circuit board manufacturers in my country. Waste circuit boards are a mixture of glass fiber reinforced resin and various metals, plus a large amount of leftovers produ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B09B5/00C22B1/00C22B7/00C22B15/00F23G7/00F23G5/033F23G5/02F23G5/027F23G5/14
CPCB09B3/00B09B5/00C22B1/005C22B7/001C22B15/0026F23G7/003F23G5/033F23G5/02F23G5/027F23G5/14F23G2201/80F23G2201/60F23G2201/30F23G2201/302F23G2201/303F23G2202/10B09B3/40Y02W30/82Y02P10/20
Inventor 刘涛万婷婷郑锦堂
Owner 浙江京城再生资源有限公司
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