Patents Assigned to DANAM-ENE CO. LTD.
  • Metal recovery method using adsorbent
    Patent number: 11473169
    Abstract: The present invention relates to a method for recovering metals using an adsorbent, which comprises preparing a leachate comprising metal ions and cyanides, wherein the metal ions comprise gold ions and copper ions; and in a state where the leachate has a cyanide (CN) concentration of 0.1 ppm or greater, adding to the leachate an adsorbent, which has an open circuit potential value between the open circuit potential value of the gold ions and that of the copper ions; and selectively adsorbing the copper ions to the adsorbent.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: October 18, 2022
    Assignee: DANAM-ENE CO. LTD.
    Inventors: Young Min Oh, Young Joo Jang, Moo Ki Bae