Title:
METHOD FOR PRODUCING VANADATE
Document Type and Number:
WIPO Patent Application WO/2019/111698
Kind Code:
A1
Abstract:
[Problem] The present invention pertains to a method for extracting a vanadium component included in combustion fly ash, clinker, etc., and producing a vanadate. [Solution] A method for producing a vanadate in which a vanadium component is recovered from within combustion fly ash or clinker to form a vanadate, wherein the method includes the following steps 1 to 5: (1) a step (step 1) for adding a sodium hydroxide aqueous solution to combustion fly ash or clinker so as to reach a water content of 5-35% by mass; (2) a step (step 2) for performing mixing or kneading; (3) a step (step 3) for heating the mixture resulting from the mixing or kneading; (4) a step (step 4) for adding water to the mixture that has undergone the heating step in step 3 to form a slurry; and (5) a step (step 5) for performing solid/liquid separation on the slurry and then recovering the vanadate in a liquid phase.
Inventors:
AKIYAMA JUNICHI (JP)
NAKAMURA KEIICHI (JP)
NAKAMURA KEIICHI (JP)
Application Number:
PCT/JP2018/042868
Publication Date:
June 13, 2019
Filing Date:
November 20, 2018
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
C22B34/22; B09B3/00; C22B3/12; C22B3/22; C22B7/02; F23J1/00
Foreign References:
| JPS5340610A | 1978-04-13 | |||
| CN102127655A | 2011-07-20 |
Other References:
ROKUKAWA, NAGANORI: "Recovery of Vanadium from Boiler Slag of Oil Fired Power Plant", JOURNAL OF MMIJ, vol. 107, no. 5, 1991, pages 295 - 299, XP055616510
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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