APPLICATION OF DIAGNOSTIC LEACHING TECHNIQUE FOR REFRACTORY GOLD ORES

Abstract

In this study, the refractory behavior of Kaletaş (Gümüşhane-Turkey) ore was investigated within a diagnostic

approach. Ultrafine grinding prior to cyanide leaching was also examined to enhance the gold recoveries. Two-stage

cyanidation of ultrafinely ground ore was found to improve the extraction of gold to 93% with the implication of

presence of readily recoverable gold and slowly dissolving gold in the ore. Diagnostic leaching provided an insight

into the refractoriness of the ore, which could be attributed to the very fine gold particles locked up largely within the

carbonates, oxides and sulfides and, to a small extent, within silicates present in the ore matrix.

Keywords

• Gold ores,Refractoriness,Diagnostic leach

REFRAKTER ALTIN CEVHERLERİ İÇİN TANIMLAYICI ÇÖZÜNDÜRME TEKNİĞİNİN UYGULANMASI

Abstract

Bu çalışmada, Kaletaş (Gümüşhane-Türkiye) cevherinin tanımlayıcı liç tekniğiyle refrakterlik davranışı

araştırılmıştır. Ayrıca altın kazanımını artırmak için siyanür liçinden önce ultra-ince öğütme de araştırılmıştır. Aşırı

öğütülmüş cevherin iki aşamalı siyanür liçi cevherdeki yavaş ve hızlı çözünebilen altının toplam kazanımını %93’ e

kadar artırmıştır. Tanımlayıcı liç tekniği göstermiştir ki, altın cevher matriksindeki silikatlar, sülfitler, oksitler ve

karbonatlar içerisinde çok ince taneli olarak bulunmaktadır.

Keywords

• Altın Cevherleri,Refrakterlik,DiagnosticLiç

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