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ELECTROCHEMICAL RECOVERY OF GOLD FROM CONCENTRATE BY USING SULFUR-GRAPHITE ELECTRODE AS THE LEACHING AGENT SOURCE

Rashid Nadirov, Leila Syzdykova, Aisulu Zhussupova
2018 Journal of Chemical Technology and Metallurgy   unpublished

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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 sulfur-containing 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
more » ... presence of gold concentrate leads to gold partial recover into solution. The following leaching process conditions allow to obtain maximum gold recovery (93 %): С NaOH = 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.
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Citation

Rashid Nadirov, Leila Syzdykova, Aisulu Zhussupova. "ELECTROCHEMICAL RECOVERY OF GOLD FROM CONCENTRATE BY USING SULFUR-GRAPHITE ELECTRODE AS THE LEACHING AGENT SOURCE." Journal of Chemical Technology and Metallurgy (2018)