Title:
METHOD FOR LEACHING NICKEL-AMMONIA SOLUTION FROM NICKEL-IRON ALLOY IN WET PROCESS AND APPLICATION
Document Type and Number:
WIPO Patent Application WO/2022/213679
Kind Code:
A1
Abstract:
The present invention relates to the field of metallurgy. Disclosed are a method for leaching a nickel-ammonia solution from a nickel-iron alloy in a wet process and an application. The method comprises the following steps: performing oxidizing roasting on a crude nickel-iron alloy, and then performing spray granulation to obtain iron nickel oxide powder; adding the iron nickel oxide powder into an alkali solution, heating, performing ammonia leaching reaction, and filtering to obtain iron slag and a leachate; and extracting the leachate, and removing oil from a raffinate, thereby obtaining a nickel-ammonia solution. According to the present invention, nickel and iron are oxidized and roasted, and then spray granulation and atmospheric-pressure ammonia leaching are performed, such that high-pressure leaching energy consumption is saved; in addition, the obtained nickel-ammonia solution is directly used for ternary precursor synthesis, such that an ammonium source that should have been introduced in a synthesis process is saved.
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Inventors:
HE FANG (CN)
LI CHANGDONG (CN)
RUAN DINGSHAN (CN)
CHEN RUOKUI (CN)
QIAO YANCHAO (CN)
DENG HAOZHEN (CN)
LI CHANGDONG (CN)
RUAN DINGSHAN (CN)
CHEN RUOKUI (CN)
QIAO YANCHAO (CN)
DENG HAOZHEN (CN)
Application Number:
PCT/CN2021/142555
Publication Date:
October 13, 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:
C22B1/02; C22B3/14; C22B23/00; H01M4/525
Foreign References:
| CN113265532A | 2021-08-17 | |||
| CN106119573A | 2016-11-16 | |||
| CN106086468A | 2016-11-09 | |||
| CN106086467A | 2016-11-09 | |||
| CN205990445U | 2017-03-01 | |||
| EP3808452A1 | 2021-04-21 | |||
| KR20140082099A | 2014-07-02 | |||
| US6264904B1 | 2001-07-24 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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