Title:
CIRCUIT BOARD PROCESSING METHOD AND PROCESSING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/210846
Kind Code:
A1
Abstract:
A circuit board processing method and processing system. The processing method comprises: carrying out pyrolysis on a circuit board to obtain pyrolysis flue gas and a solid residue; and using the pyrolysis flue gas as a part of fuel in a heavy metal sludge side-blown smelting process, and performing side-blown smelting on the heavy metal sludge. The processing system comprises: a pyrolysis unit (10), provided with a pyrolysis flue gas outlet and a solid residue outlet; a heavy metal sludge supply unit (20); and a side-blown smelting unit (30), provided with an inlet for a material to be smelted and a side-blown inlet, the pyrolysis flue gas outlet being connected to the side-blown inlet, and the inlet for material to be smelted being connected to the heavy metal sludge supply unit (20). Since the pyrolysis flue gas generated by pyrolysis of the circuit board has a relatively high temperature and comprises many organic substances, the gas thus has a high calorific value. When the circuit board pyrolysis process is combined with the side-blown smelting of a heavy metal sludge, the pyrolysis flue gas is used as a part of the fuel for the side-blown smelting of the heavy metal sludge so as to make full use of the heat values of said part, which also avoids environmental pollution caused by the discharge of organic matter and reduces the cost of the side-blown smelting of heavy metal sludge. The side-blown smelting process may reduce the pollution degree of smelting flue gas by means of sufficient combustion under oxygen-rich conditions.
Inventors:
SONG ZHENZHEN (CN)
LI MIN (CN)
XU XIAOFENG (CN)
CUI MU (CN)
CHEN XUEGANG (CN)
WU CHUANGU (CN)
LI CHONG (CN)
LI MIN (CN)
XU XIAOFENG (CN)
CUI MU (CN)
CHEN XUEGANG (CN)
WU CHUANGU (CN)
LI CHONG (CN)
Application Number:
PCT/CN2019/085142
Publication Date:
November 07, 2019
Filing Date:
April 30, 2019
Export Citation:
Assignee:
CHINA ENFI ENG CORP (CN)
International Classes:
C22B7/00; F23G5/027; F23G5/16; F23G7/00
Foreign References:
| CN108642286A | 2018-10-12 | |||
| CN108413412A | 2018-08-17 | |||
| CN208253603U | 2018-12-18 | |||
| CN107828974A | 2018-03-23 | |||
| CN107828974A | 2018-03-23 | |||
| CN103382398A | 2013-11-06 | |||
| CN106086416A | 2016-11-09 | |||
| US20160030987A1 | 2016-02-04 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P. C. (CN)
Download PDF: