Title:
METHOD FOR USE IN PRODUCING BATTERY-GRADE VANADIUM OXIDE
Document Type and Number:
WIPO Patent Application WO/2018/192441
Kind Code:
A1
Abstract:
A method for use in producing battery-grade vanadium oxide, comprising the following steps: A. adding a vanadium-containing leaching solution into a mixed solution of ammonium carbonate, ammonia water and ammonium sulfate, stirring to precipitate, and separating liquid from solid to obtain a crude vanadium-containing product; B. using hot water to wash the crude vanadium-containing product to obtain a purified vanadium-containing leaching solution; C. adjusting the pH of the purified vanadium-containing leaching solution to 1.5-2.5, and adding said solution into a boiling ammonium sulfate solution, heating and stirring, precipitating and separating solid from liquid to obtain high-purity ammonium polyvanadate (APV), washing, drying and calcinating the APV to obtain battery-grade vanadium pentoxide.
Inventors:
HE WENYI (CN)
PENG YI (CN)
LI MING (CN)
YE LU (CN)
CHEN YAN (CN)
SHEN BIAO (CN)
PENG YI (CN)
LI MING (CN)
YE LU (CN)
CHEN YAN (CN)
SHEN BIAO (CN)
Application Number:
PCT/CN2018/083185
Publication Date:
October 25, 2018
Filing Date:
April 16, 2018
Export Citation:
Assignee:
PANGANG GROUP RES INSTITUTE CO LTD (CN)
International Classes:
C22B3/44; C22B1/02; C22B3/08; C22B34/22
Foreign References:
| CN106834688A | 2017-06-13 | |||
| CN103121716A | 2013-05-29 | |||
| CN105316497A | 2016-02-10 | |||
| CN104986909A | 2015-10-21 | |||
| CN106082335A | 2016-11-09 | |||
| JP2002102823A | 2002-04-09 |
Attorney, Agent or Firm:
CHENGDU HONGQIAO PATENT LAW OFFICE (CN)
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