Invention Grant
- Patent Title: Method for recycling noble metal from electronic waste material and apparatus thereof
- Patent Title (中): 从电子废料回收贵金属的方法及其设备
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Application No.: US13823076Application Date: 2010-10-27
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Publication No.: US09328398B2Publication Date: 2016-05-03
- Inventor: Kaihua Xu
- Applicant: Kaihua Xu
- Applicant Address: CN Shenzhen
- Assignee: GEM CO., LTD.
- Current Assignee: GEM CO., LTD.
- Current Assignee Address: CN Shenzhen
- Agency: Shimokaji IP
- Priority: CN201010506134 20101012
- International Application: PCT/CN2010/078167 WO 20101027
- International Announcement: WO2012/048474 WO 20120419
- Main IPC: C22B4/04
- IPC: C22B4/04 ; C22B4/08 ; C22B11/02

Abstract:
A method for recycling noble metals from electronic waste materials and apparatus thereof. The method comprises the following steps: mechanically breaking up the electronic waste materials; removing rubber and plastic materials by electrostatic separation; removing ferromagnetic metals by magnetic separation; removing residual rubber and plastic materials by microwave pyrolysis; removing low-melting-point metals by indirectly heating using microwave; separating the noble metals from one another in turn from low-melting-point metal to high-melting-point metal for recycle. The apparatus includes a microwave housing. A filtering screen is positioned on the inside wall of the housing horizontally, and vertically-arranged and open-ended heating pipes are positioned over the filtering screen. The method and apparatus can adequately recycle resources in the electronic waste materials.
Public/Granted literature
- US20130174694A1 METHOD FOR RECYCLING NOBLE METAL FROM ELECTRONIC WASTE MATERIAL AND APPARATUS THEREOF Public/Granted day:2013-07-11
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