Title:
ENVIRONMENTALLY FRIENDLY NON-CYANIDE GOLD EXTRACTOR, PREPARATION METHOD AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/206933
Kind Code:
A1
Abstract:
Examples of the present invention relate to the field of gold metallurgy, and in particular, to an environmentally friendly non-cyanide gold extractor, a preparation method and use thereof. The environmentally friendly non-cyanide gold extractor comprises a solid pyridine derivative, N-bromosuccinimide and a base. The preparation method for an aqueous environmentally friendly non-cyanide gold extractor solution comprises: dissolving N-bromosuccinimide in an aqueous solution, adding a base, and stirring to obtain an aqueous base-type Br solution; and dissolving the solid pyridine derivative in the aqueous base-type Br solution. The environmentally friendly non-cyanide gold extractor provided in the present invention is not affected by the small liquid-solid ratio required in industrial production, and can achieve an industrially acceptable high gold leaching rate under a low liquid-solid ratio condition allowed in industry and at a low reagent concentration, being suitable for industrial applications; and has a high leaching rate of gold and a relatively low toxicity. The agents used are cheap and easily available, and the use thereof is not limited by long-distance transport. The agents are convenient for large-scale industrial use.
Inventors:
YANG PENG (CN)
WANG DONG (CN)
WANG DONG (CN)
Application Number:
PCT/CN2019/106477
Publication Date:
October 15, 2020
Filing Date:
September 18, 2019
Export Citation:
Assignee:
UNIV SHAANXI NORMAL (CN)
International Classes:
C22B11/00; C22B3/12; C22B3/16
Foreign References:
| CN110029230A | 2019-07-19 | |||
| CN107540604A | 2018-01-05 | |||
| CN103935954A | 2014-07-23 |
Other References:
乐春林 (LE, CHUNLIN): "利用NBS/Py体系从金矿和电子垃圾中提取金的应用研究 (Non-official translation: Application Research of Using NBS / Py System to Extract Gold from Gold Mine and Electronic Waste)", 中国优秀硕士学位论文全文数据库 工程科技I辑 (CHINESE MASTER’S THESES FULL-TEXT DATABASE, ENGINEERING SCIENCE & TECHNOLOGY I), no. 2018, 5, 15 May 2018 (2018-05-15), XP55742078, ISSN: 1674-0246, DOI: 20191102233113A
See also references of EP 3943625A4
See also references of EP 3943625A4
Attorney, Agent or Firm:
BEIJING YUEHE INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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