Recovery method of waste circuit board value resource

一种废弃电路板有价资源的回收方法

Abstract

一种废弃电路板有价资源的回收方法,包括如下步骤:(1)真空裂解:将带有电子元件的废弃电路板置于真空裂解装置中,进行热裂解,收集热裂解挥发产物冷凝成液态油。(2)加热真空离心分离:将裂解后的固态产物置于真空离心机械中加热使焊锡与裂解渣高效分离。(3)收集步骤2所得裂解渣:分别回收贵金属和其他有价金属,分离回收铜箔、玻璃纤维、碳渣等物质。本发明根据废弃电路板的结构特性分阶段处理、优化废弃电路板处理的工序和条件、方法简单、使得废弃电路板的回收成本更低、效率更高、废弃电路板废弃资源回收率更高、更符合工业化的要求,适合废弃电路板的大规模回收。
The invention disclose a recovery method of valuable resource of an abandoned circuit board, which comprises the following steps of: (1) vacuum cracking: the abandoned circuit board provided with an electronic component is placed inside a vacuum cracking device for thermal cracking and volatile products after thermal cracking are collected and condensed to be fluid oil; (2) heating vacuum centrifugation: solid-state products after cracking are placed inside a vacuum centrifugation machinery and heated so as to lead soldering tin to be separated from cracking dregs efficiently; and (3) the collection of the cracking dregs obtained from the step (2): noble metal and other valuable metals are collected respectively and substances of copper foil, glass fibers, carbon residue and the like are recovered discretely. The invention carries out treatment in phases according to the structural characteristics of the abandoned circuit board, optimizes the treatment procedures and conditions of the abandoned circuit board and is simple in method, and leads the recovery of the abandoned circuit board to have lower cost, higher efficiency and higher recovery rate of the abandoned resource, thus being more in accordance with the demands of industrialization and applicable to large-scale recovery of the abandoned circuit board.

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Cited By (12)

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    CN-102240606-ANovember 16, 2011广州有色金属研究院Method for separating nonmetal materials from waste circuit boards by flotation
    CN-102350429-AFebruary 15, 2012大连理工大学Method for separation and recovery of metal and nonmetal in waste printed circuit board
    CN-102671916-ASeptember 19, 2012宁波天地回珑再生资源科技有限公司Recycling processing technology for waste circuit board
    CN-102671916-BMay 28, 2014宁波天地回珑再生资源科技有限公司废线路板处理回收工艺
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    CN-102716896-BMay 13, 2015中国科学院生态环境研究中心Method for recycling copper foils and glass fibers in discarded circuit board by means of hydro-thermal treatment
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