Invention Application
- Patent Title: Comprehensive Recovery Method Of Pyrolysis Polymetallic Product From Waste Integrated Circuit Board
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Application No.: US17609277Application Date: 2019-07-17
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Publication No.: US20220205063A1Publication Date: 2022-06-30
- Inventor: Dean Pan , Yufeng Wu , Bin Li
- Applicant: Beijing University of Technology
- Applicant Address: CN Beijing
- Assignee: Beijing University of Technology
- Current Assignee: Beijing University of Technology
- Current Assignee Address: CN Beijing
- Priority: CN201910376417.0 20190507
- International Application: PCT/CN2019/096265 WO 20190717
- Main IPC: C22B3/00
- IPC: C22B3/00 ; C22B15/00 ; C22B11/00 ; C22B11/02 ; C22B7/00 ; C22B23/02

Abstract:
The invention relates to a method for multi-metal products recovery from pyrolytic waste integrated circuit boards. The method mainly comprises the steps of smelting and blending, atomization, acidolysis and filtration, noble metal recycling, copper extraction and back extraction, nickel extraction and back extraction. Compared with the prior art, the method has the advantages that smoke pollution and the smelting slag treatment in the process of preparing a black copper ingot through multi-metal collaborative smelting are reduced, and the problems of low anode efficiency of the black copper electrolysis process are solved. Meanwhile, the high-temperature high-oxygen atomized gas generated in the atomizing process provides a heat source and an oxygen source for subsequent acidolysis, so that the energy consumption is further reduced. The method has the advantages such as short process, remarkable energy conservation and emission reduction.
Public/Granted literature
- US11447846B2 Comprehensive recovery method of pyrolysis polymetallic product from waste integrated circuit board Public/Granted day:2022-09-20
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