Search International and National Patent Collections

1. (WO2017031949) METHOD FOR LEACHING LOW-GRADE LEAD-ZINC OXIDE ORES BY MEANS OF ELECTROOXIDATION, AND LEACHING DEVICE THEREOF

Pub. No.:    WO/2017/031949    International Application No.:    PCT/CN2016/072471
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Fri Jan 29 00:59:59 CET 2016
IPC: C22B 3/12
C22B 19/20
C25C 1/18
Applicants: SICHUAN HUAFUYU SCIENCE AND TECHNOLOGY CO., LTD.
四川华富宇科技有限责任公司
Inventors: YUAN, Qi
袁崎
LIAO, Yinong
廖亦农
Title: METHOD FOR LEACHING LOW-GRADE LEAD-ZINC OXIDE ORES BY MEANS OF ELECTROOXIDATION, AND LEACHING DEVICE THEREOF
Abstract:
A method for leaching low-grade lead-zinc oxide ores by means of electrooxidation comprises the following steps: A, pulping: carrying out crushing and ball milling on the low-grade lead-zinc oxide ores, and adding water to mix the ores to make a pulp; B, leaching: after the pulp is fed into an electrolytic bath, adding alkali liquor and an activating agent to the electrolytic bath to form a solid-liquid mixture, and carrying out leaching at a normal temperature under a normal pressure, so as to obtain leached liquor and spongy lead; C, carrying separation and extraction on the leached liquor to obtain zinc powder, carrying out regeneration treatment on filter liquor, and then returning the filter liquor to the electrolytic bath to be recycled; D recycling the sponge lead; and E, treating waste water and waste residues. The electrolytic bath comprises a cathode region (3), an anode region (4), a stirrer (5), a cathode plate (8) and an anode plate (7).