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1. (WO2018082516) METHOD FOR COMPREHENSIVE RECOVERY OF SILVER-CONTAINING LEAD SLAG

Pub. No.:    WO/2018/082516    International Application No.:    PCT/CN2017/108239
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Tue Oct 31 00:59:59 CET 2017
IPC: C22B 7/04
C22B 13/00
C22B 11/00
Applicants: BEIJING UNIVERSITY OF TECHNOLOGY
北京工业大学
Inventors: PAN, De'an
潘德安
WU, Yufeng
吴玉锋
LI, Liquan
李历铨
Title: METHOD FOR COMPREHENSIVE RECOVERY OF SILVER-CONTAINING LEAD SLAG
Abstract:
A method for comprehensive recovery of silver-containing lead slag, mainly comprising the following steps: impurity removal, deleading, reduction and filtration, lead dissolving, hot filtration, quenching filtration, cleaning, thermal decomposition, and the like. Silver is recovered in the form of silver powder, and lead is recovered in the form of red lead, yellow lead and lead chloride respectively.