Title:
METHOD FOR RECOVERING SOLUBLE TUNGSTATE IN TUNGSTEN-CONTAINING WASTE
Document Type and Number:
WIPO Patent Application WO/2023/178902
Kind Code:
A1
Abstract:
Disclosed is a method for recovering soluble tungstate in tungsten-containing waste, comprising the specific steps of: leaching the tungsten-containing waste by using an acid solution to obtain a tungsten-containing leachate, adjusting the pH value of the leachate to 2-14 so that a precipitate that adsorbs tungsten is produced in the leachate, filtering to obtain a tungsten-containing slag, calcinating the tungsten-containing slag, and then performing alkali leaching on a sintered material. According to the method, a small amount of tungsten in an acid leachate can be efficiently recovered, thereby improving the efficient resource utilization of complex tungsten-containing waste.
Inventors:
FENG HAO (CN)
HUANG JIAN (CN)
HUANG YI (CN)
TAN SHAOSONG (CN)
HU JICHENG (CN)
HUANG JIAN (CN)
HUANG YI (CN)
TAN SHAOSONG (CN)
HU JICHENG (CN)
Application Number:
PCT/CN2022/108808
Publication Date:
September 28, 2023
Filing Date:
July 29, 2022
Export Citation:
Assignee:
HUBEI GREEN TUNGSTEN CO LTD (CN)
International Classes:
C22B34/36; C22B7/00
Foreign References:
| US4741886A | 1988-05-03 | |||
| CN101177303A | 2008-05-14 | |||
| JP2016089219A | 2016-05-23 | |||
| CN110093511A | 2019-08-06 | |||
| RU2427657C1 | 2011-08-27 | |||
| CN110156084A | 2019-08-23 | |||
| CN101643848A | 2010-02-10 | |||
| CN113454248A | 2021-09-28 | |||
| CN105502500A | 2016-04-20 |
Other References:
LYU YING, SUN FANG: "Study of Separation of Tungsten and Molybdenum from High W-containing Molybdate Acid Sodium Solution by Fe(OH)3 Adsorption", XIYOU-JINSHU-YU-YINGZHI-HEJIN
= RARE METALS AND CEMENTED CARBIDES, CHANGSHA YOUSE YEJIN SHEJI YANJIUYUAN, CN, vol. 33, no. 3, 30 September 2005 (2005-09-30), CN , pages 1 - 3, XP093094428, ISSN: 1004-0536
Attorney, Agent or Firm:
WUHAN ZHI JIA JOINT INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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