| Autor: |
Nadirov, Rashid K., Syzdykova, Leila I., Zhussupova, Aisulu K. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Technology & Metallurgy; 2018, Vol. 53 Issue 3, p556-563, 8p |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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