Title:
PYROLYSIS SULFURIZATION BENEFICIATION METHOD FOR LATERITE-NICKEL ORE, METAL SULFIDE, AND USE
Document Type and Number:
WIPO Patent Application WO/2023/010837
Kind Code:
A1
Abstract:
A pyrolysis sulfurization beneficiation method for a laterite-nickel ore, comprising the following steps: S1) optionally drying a laterite-nickel ore to obtain a dry laterite-nickel ore; S2) heating and reacting the dry laterite-nickel ore with a sulfurizing agent to obtain a sulfurized mixed ore; S3) crushing and grinding the sulfurized mixed ore to obtain a powdered ore, then feeding the powdered ore into a beneficiation process, and separating to obtain a metal sulfide and remaining tailings. In the present method, after the laterite-nickel ore is dried to remove free water, the sulfurizing agent is added to be heated together, so that the nickel-cobalt oxide in the laterite-nickel ore is converted into a sulfide. Then, a currently mature nickel-cobalt sulfide flotation technology is used, so that the beneficiation of the laterite-nickel ore can be achieved under certain conditions, and a large amount of slag is reduced for a downstream smelting process, thereby reducing the energy consumption problem of laterite-nickel ore smelting, and the method has great economic and social value.
Inventors:
CHEN CHONGXUE (CN)
WANG JIN (CN)
WANG JIN (CN)
Application Number:
PCT/CN2022/079128
Publication Date:
February 09, 2023
Filing Date:
March 03, 2022
Export Citation:
Assignee:
CHEN CHONGXUE (CN)
International Classes:
C22B1/00; C01G49/12; C01G51/00; C01G53/11; C22B23/00
Domestic Patent References:
| WO2019174103A1 | 2019-09-19 |
Foreign References:
| CN101368235A | 2009-02-18 | |||
| CN102220483A | 2011-10-19 | |||
| CN102560240A | 2012-07-11 | |||
| CN109097562A | 2018-12-28 | |||
| CN101225470A | 2008-07-23 |
Attorney, Agent or Firm:
BEIJING GUANGYOU PATENT LAW OFFICE CO., LTD. (CN)
Download PDF:
Previous Patent: HEAT DISSIPATION MODULE AND ELECTRONIC DEVICE
Next Patent: CLOTH ASSEMBLY OF FLOOR-SWEEPING ROBOT AND FLOOR-SWEEPING ROBOT HAVING SAME
Next Patent: CLOTH ASSEMBLY OF FLOOR-SWEEPING ROBOT AND FLOOR-SWEEPING ROBOT HAVING SAME