Title:
METHOD FOR SEPARATING FERRONICKEL FROM LATERITIC NICKEL ORE LEACH SOLUTION AND PREPARING IRON PHOSPHATE, AND APPLICATION
Document Type and Number:
WIPO Patent Application WO/2022/179291
Kind Code:
A1
Abstract:
Disclosed in the present invention are a method for separating ferronickel from a lateritic nickel ore leach solution and preparing iron phosphate, and an application. The method comprises: adjusting the pH of a lateritic nickel ore leach solution to 0.5-1.5, dropwise adding a composite sulfide precipitant for reaction, adding a coagulating agent, and filtering to obtain nickel sulfide precipitates and a filtrate; then adding an oxidant and a phosphoric acid solution to the filtrate, adjusting the pH for reaction, and performing heating, concentration and crystallization to obtain iron phosphate. According to the present invention, a reaction process is controlled under a high acidity condition, and a reaction kinetics process is subtly controlled, so that one-step, efficient and low-cost separation of ferronickel is implemented, the separation effect is good, and the impurity content of iron phosphate is low.
Inventors:
YU HAIJUN (CN)
XIE YINGHAO (CN)
ZHANG XUEMEI (CN)
LI CHANGDONG (CN)
XIE YINGHAO (CN)
ZHANG XUEMEI (CN)
LI CHANGDONG (CN)
Application Number:
PCT/CN2021/142313
Publication Date:
September 01, 2022
Filing Date:
December 29, 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:
C01B25/37; C01B25/45; C01G53/11; C22B3/44; C22B23/00
Foreign References:
| CN113023701A | 2021-06-25 | |||
| CN101575676A | 2009-11-11 | |||
| CN101302584A | 2008-11-12 | |||
| CN110600735A | 2019-12-20 | |||
| CN110316712A | 2019-10-11 | |||
| CN103757200A | 2014-04-30 | |||
| US20190119780A1 | 2019-04-25 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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