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A copper-tin separation process for waste circuit boards

A technology of waste circuit boards, copper and tin, applied in the direction of mechanical material recycling, plastic recycling, recycling technology, etc.

Active Publication Date: 2021-02-02
湖北贝来佳贵金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a copper-tin separation process for waste circuit boards that is easy to produce toxic gases and cause environmental protection problems in the process of dismantling and recycling waste circuit boards in the existing baking board process

Method used

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  • A copper-tin separation process for waste circuit boards
  • A copper-tin separation process for waste circuit boards
  • A copper-tin separation process for waste circuit boards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040]The equipment required for the copper-tin separation process of waste circuit boards includes a crushing and sorting device and a copper-tin separator 27 .

[0041] The crushing and sorting device consists of electric control cabinet, feeding conveyor 1, primary crusher 2, secondary crusher 3, magnetic separation conveyor 4, belt conveyor 5, electrostatic separator A6, electrostatic separator B7 and Eddy current separator 8 constitutes.

[0042] One side of the eddy current separator 8 is provided with a three-stage crusher 9, an airflow separator 10, a pulse dust collector 11 and an electrostatic separator B7 in sequence.

[0043] The third-stage crusher 9 is an impact crusher produced by Taizhou Weibo Environmental Protection Equipment Technology Co., Ltd.; when working, its blade rotates at a high speed in the crushing chamber to generate impact and shear force on the materials to be crushed, so that the materials to be crushed are crushed.

[0044] The Airflow Separ...

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Abstract

The copper-tin separation process of the waste circuit board is ingeniously designed; after crushing the waste circuit board for many times, magnetic separation and iron removal, eddy current separation and airflow separation are carried out in sequence, and the resin particles and the metal particles containing copper and tin are separated Separation; then the tin in the mixed metal particles is heated and liquefied by a copper-tin separator and then recovered; thus avoiding the problem that a large amount of toxic gas is easily generated when the existing baking board process recycles tin, and reduces the pressure on environmental protection; Meet the needs of enterprise production and use.

Description

technical field [0001] The invention relates to a copper-tin separation process for waste circuit boards, which belongs to the field of waste circuit board recycling processes. Background technique [0002] As the basic component of various electrical appliances and equipment, the circuit board itself is composed of a substrate and electronic components; the electronic components are welded on the substrate by metal tin; the substrate is made of resin material wrapped copper sheet; the electronic components contain gold, silver Metals with high added value. At present, the recycling of waste circuit boards usually adopts the baking board process to recycle tin; it not only takes advantage of the characteristics that the melting point of tin is lower than the melting point of other metals, but also uses high temperature to bake waste circuit boards, and recycles tin after baking into a liquid state. The electronic components are soldered on the substrate by tin, and when the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B17/02B29B17/04
CPCB29B17/02B29B17/04B29B2017/0224B29B2017/0241B29B2017/0255B29B2017/0265B29B2017/0272B29B2017/044Y02W30/52Y02W30/62
Inventor 李光金王学林胡智勇邓国雄
Owner 湖北贝来佳贵金属有限公司