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Patent Searching and Data


Title:
METHOD FOR RECOVERING GOLD VIA SOLVENT EXTRACTION
Document Type and Number:
WIPO Patent Application WO/2017/086497
Kind Code:
A1
Abstract:
An embodiment of the present invention provides a method for recovering gold, the method comprising: (a)a step for dissolving a metal-containing raw material in an acidic solution to prepare a metal chloride mother liquor, and then filtrating to remove silver chloride; (b) a step for heating the metal chloride mother liquor to 100°C to 150°C (c) a step for separating a first organic phase and a first water phase via solvent extraction of the metal chloride mother liquor; (d) a step for washing the first organic phase with an acid aqueous solution to separate a second organic phase and a second water phase; (e) a step for obtaining gold and a first waste solution by reducing the second organic phase; and (f) a step for obtaining gold and a second waste solution by adding a urea-containing reducing agent to the first and second water phases.

Inventors:
KANG, Ki Hyun (643-702, 34 Sanboncheon-ro,Gunpo-si, Gyeonggi-do, 15866, KR)
JEON, Yang Seok (709-2401, 205 Gaon-ro,Paju-si, Gyeonggi-do, 10898, KR)
Application Number:
KR2015/012347
Publication Date:
May 26, 2017
Filing Date:
November 17, 2015
Export Citation:
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Assignee:
SAMDUCK PRECIOUS MATERALS CO., LTD. (43 Hambangmoe-ro 318beon-gil, Namdong-gu, Incheon, 21631, KR)
International Classes:
C22B11/00; C22B3/02; C22B3/16; C22B3/26; C22B7/00; C22B11/06
Attorney, Agent or Firm:
HANA IP LAW FIRM (6F.10, Teheran-ro 20-gilGangnam-gu, Seoul, 06235, KR)
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