Title:
DRY SEPARATION AND RECOVERY PROCESS FOR RECOVERING VALUABLE CONSTITUENT FROM WASTE CIRCUIT BOARD
Document Type and Number:
WIPO Patent Application WO/2018/233382
Kind Code:
A1
Abstract:
A dry separation and recovery process for recovering a valuable constituent from a waste circuit board comprises: step 1. dismantling a waste circuit board to obtain a bare waste circuit board; step 2. removing a solder from the bare waste circuit board; step 3. sequentially performing coarse crushing and fine crushing on the bare waste circuit board from which the solder has been removed to obtain granulated particles of the waste circuit board; step 4. performing sieving and classification of the granulated particles of the waste circuit board to obtain materials having grain sizes of -2+1 mm, -1+0.5 mm, -0.5+0.3 mm, -0.3+0.125 mm, -0.125+0.074 mm and -0.074 mm; step 5. respectively supplying the materials to different dry physical separation apparatuses to undergo separation operations; and step 6. respectively recovering a metal concentrate and a non-metal concentrate obtained by the separation operations performed by the respective apparatus. The present invention employs several physical separation techniques to separate metal constituents and non-metal constituents from materials having different grain sizes, thereby obtaining a high-grade metal concentrate product after separation, and achieving a high recovery rate. The separation process causes less environmental contamination.
Inventors:
HE JINGFENG (CN)
ZHAO YUEMIN (CN)
HE YAQUN (CN)
DUAN CHENLONG (CN)
WANG HAIFENG (CN)
YAO YAKE (CN)
ZHAO YUEMIN (CN)
HE YAQUN (CN)
DUAN CHENLONG (CN)
WANG HAIFENG (CN)
YAO YAKE (CN)
Application Number:
PCT/CN2018/085435
Publication Date:
December 27, 2018
Filing Date:
May 03, 2018
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
International Classes:
B09B3/00
Foreign References:
| CN107442549A | 2017-12-08 | |||
| CN101642765A | 2010-02-10 | |||
| CN1535760A | 2004-10-13 | |||
| CN102671916A | 2012-09-19 | |||
| CN106734058A | 2017-05-31 | |||
| US20060228231A1 | 2006-10-12 |
Attorney, Agent or Firm:
NANJING SUGAO PATENT AND TRADEMARK FIRM (ORDINARY PARTNERSHIP) (CN)
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