Extraction of gold and silver from Turkish gold ore by ammoniacal thiosulphate leaching

Fatma Arslan*, Baris Sayiner

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14 Atıf (Scopus)

Özet

Although cyanide is a widespread leaching reagent for the recovery of precious metals, there still are continuing investigations on alternative processes due to the related environmental problems concerned. Thiosulphate leaching of precious metals is one of the processes that were developed as an alternative and nontoxic technique to conventional cyanidation. The aim of this experimental study was to investigate the possibilities of leaching gold and silver in ammoniacal thiosulphate solutions on a laboratory scale. Samples used in the experiments were taken from Ovack Gold Mine, located in the Bergama region of Turkey. The influence of temperature, copper sulphate concentration, ammonia concentration, thiosulphate concentration, sodium sulfite concentration, and solid-liquid ratio on gold and silver leaching recoveries was investigated and optimum leaching conditions were determined. At these conditions, 99.57% Au and 95.87% Ag leaching recoveries were achieved.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)68-82
Sayfa sayısı15
DergiMineral Processing and Extractive Metallurgy Review
Hacim29
Basın numarası1
DOI'lar
Yayın durumuYayınlandı - Oca 2008

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