Title:
AMMONIUM COMPLEX SYSTEM-BASED METHOD FOR SEPARATING AND PURIFYING LEAD, ZINC, CADMIUM, AND COPPER
Document Type and Number:
WIPO Patent Application WO/2021/190025
Kind Code:
A1
Abstract:
An ammonium complex system-based method for separating and purifying lead, zinc, cadmium, and copper, comprising the following steps: a zinc-containing raw material is leached using a leach solution to produce a leached solution; a filtrate and a filter residue are produced by filtration; the filtrate is mixed with metal lead to displace copper, undergoes a solid-liquid separation to produce a first separated liquid, is mixed with metal cadmium to displace lead, undergoes a solid-liquid separation to produce a second separated liquid, is mixed with metal zinc to displace cadmium, and undergoes a solid-liquid separation to produce a third separated liquid; and, the third separated liquid is electrolyzed to produce metal zinc, and an electrolytic solution is returned to the leaching step.
Inventors:
LUO YAN (CN)
MA LIYANG (CN)
FENG GUOJUN (CN)
ZHANG WU (CN)
CHEN RUI (CN)
MA QINGLONG (CN)
MA LIYANG (CN)
FENG GUOJUN (CN)
ZHANG WU (CN)
CHEN RUI (CN)
MA QINGLONG (CN)
Application Number:
PCT/CN2020/140100
Publication Date:
September 30, 2021
Filing Date:
December 28, 2020
Export Citation:
Assignee:
GREENNOVO ENVIRONMENTAL TECH CO LTD (CN)
International Classes:
C22B3/46; C22B3/14; C22B3/22; C22B19/20
Foreign References:
| CN111286609A | 2020-06-16 | |||
| CN1046761A | 1990-11-07 | |||
| CN108277345A | 2018-07-13 | |||
| CN101928827A | 2010-12-29 | |||
| CN1093418A | 1994-10-12 | |||
| CN105197982A | 2015-12-30 | |||
| US20090272227A1 | 2009-11-05 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
Download PDF: