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Title:
METHOD FOR TREATING LOW-MAGNESIUM LIMONITE TYPE LATERITE NICKEL ORE
Document Type and Number:
WIPO Patent Application WO/2020/062964
Kind Code:
A1
Abstract:
Disclosed in the present invention is a method for treating low-magnesium limonite type laterite nickel ore. The method specifically comprises the following seven steps: ore grinding pretreatment, nitric acid pressure leaching, neutralization for removing iron and aluminum, neutralization for precipitating nickel and cobalt, recovery of nickel and cobalt by resin column, ratio adjustment for solution, and evaporating concentration and drying. The selective use of a leaching agent and a pH regulator in a synergistic cooperation treatment process enables all steps in the whole process synergistically cooperate with each other so as to implement efficient and sufficient leaching and recovery of cobalt and nickel in the laterite nickel ore, and enables chemical agents added in the treatment process to cooperate with calcium and magnesium metals in the laterite nickel ore so as to all convert into a directly recyclable calcium magnesium nitrate mixed fertilizer, thereby implementing completely full utilization and treatment of resources, and solving the difficult problem in the past of comprehensive utilization of the low-magnesium limonite type laterite nickel ore. Moreover, substances discharged in the entire treatment process are all directly recyclable products, and no waste water/waste residue/waste gas is discharged. The method has simple and easily-controlled treatment steps, low energy consumption, low costs, and high industrial practical values.

Inventors:
ZHAO LIN (CN)
DAN YONG (CN)
ZHAO PENG (CN)
LIU WEI (CN)
Application Number:
PCT/CN2019/092494
Publication Date:
April 02, 2020
Filing Date:
June 24, 2019
Export Citation:
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Assignee:
MEISHAN SHUNYING POWER BATTERY MAT CO LTD (CN)
International Classes:
C01F5/38; C22B23/00; C01F11/36; C05C5/00; C05C5/04; C22B3/06; C22B3/24; C22B3/44
Domestic Patent References:
WO2015097343A12015-07-02
Foreign References:
CN108396157A2018-08-14
CN106673071A2017-05-17
CN101139656A2008-03-12
US20020041840A12002-04-11
CN109252056A2019-01-22
Attorney, Agent or Firm:
SICHUAN LIJIU LAW FIRM (CN)
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