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- Title
ELECTROCHEMICAL RECOVERY OF GOLD FROM CONCENTRATE BY USING SULFUR-GRAPHITE ELECTRODE AS THE LEACHING AGENT SOURCE.
- Authors
Nadirov, Rashid K.; Syzdykova, Leila I.; Zhussupova, Aisulu K.
- Abstract
In the present paper electrochemical leaching has been applied to recover gold from the gold concentrate (Vasilkovskoe deposit, Kazakhstan) into water solution. The specially prepared sulfur-graphite electrode (SGE) was used as a source of sulfurcontaining anions, acting as leaching agents. To prevent anodic oxidation of sulfur-containing anions, the cathodic compartment was separated from the anodic one with PVC separator. Cathodic polarization of SGE immersed into NaOH aqueous solution in the presence of gold concentrate leads to gold partial recover into solution. The following leaching process conditions allow to obtain maximum gold recovery (93 %): CNaOH = 2 M; i = 80 mA cm-2; L:S = 7; leaching duration = 210 min. The SGE consumption is about 55 g per 1 g of the gold in the solution under the above-mentioned conditions.
- Subjects
GOLD; LEACHING; ELECTROCHEMISTRY; ANIONS; SULFUR electrodes; GRAPHITE
- Publication
Journal of Chemical Technology & Metallurgy, 2018, Vol 53, Issue 3, p556
- ISSN
1314-7471
- Publication type
Article