Title:
METHOD FOR RECOVERING METAL FROM LATERITE-NICKEL ORE SLAG
Document Type and Number:
WIPO Patent Application WO/2022/267426
Kind Code:
A1
Abstract:
The present invention relates to a method for recovering metal in laterite-nickel ore. The method comprises: using laterite-nickel ore slag as a raw material, mixing the laterite-nickel ore slag with compounding agents, and then grinding and sieving to prepare slag powder; mixing part of the slag powder, charcoal powder, and conditioning agents to prepare a material blank; roasting the material blank in a reducing atmosphere; crushing the roasted material blank into material blank powder; mixing and smelting the material blank powder and the residual slag powder to obtain a smelted product; mixing the smelted product with mixed acid, and performing leaching reaction to obtain a leaching solution; and stirring and mixing the leaching solution and a mixed seed crystal, and cooling and crystallizing to obtain a multi-metal salt crystal. According to the recovery method, triethanolamine, glycerol, and triisopropanolamine are used as compounding agents, humus and active lime are used as conditioning agents, the process is simple and easy to implement, raised dust is reduced, the metal recovery rate is high, and effective utilization of the laterite-nickel ore slag is achieved.
Inventors:
YU HAIJUN (CN)
ZHONG YINGSHENG (CN)
XIE YINGHAO (CN)
LI AIXIA (CN)
ZHANG XUEMEI (CN)
LI CHANGDONG (CN)
ZHONG YINGSHENG (CN)
XIE YINGHAO (CN)
LI AIXIA (CN)
ZHANG XUEMEI (CN)
LI CHANGDONG (CN)
Application Number:
PCT/CN2021/142956
Publication Date:
December 29, 2022
Filing Date:
December 30, 2021
Export Citation:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP VEHICLES RECYCLING CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP VEHICLES RECYCLING CO LTD (CN)
International Classes:
C22B7/00; C22B1/16; C22B21/00; C22B26/22
Foreign References:
| CN113528826A | 2021-10-22 | |||
| CN105129831A | 2015-12-09 | |||
| CN111072303A | 2020-04-28 | |||
| CN109971948A | 2019-07-05 | |||
| CN101403043A | 2009-04-08 | |||
| CN107674984A | 2018-02-09 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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