REFRAKTER ALTIN CEVHERLERİ İÇİN TANIMLAYICI ÇÖZÜNDÜRME TEKNİĞİNİN UYGULANMASI

Bu çalışmada, Kaletaş (Gümüşhane-Türkiye) cevherinin tanımlayıcı liç tekniğiyle refrakterlik davranışıaraştırılmıştır. Ayrıca altın kazanımını artırmak için siyanür liçinden önce ultra-ince öğütme de araştırılmıştır. Aşırıöğütülmüş cevherin iki aşamalı siyanür liçi cevherdeki yavaş ve hızlı çözünebilen altının toplam kazanımını %93’ ekadar artırmıştır. Tanımlayıcı liç tekniği göstermiştir ki, altın cevher matriksindeki silikatlar, sülfitler, oksitler vekarbonatlar içerisinde çok ince taneli olarak bulunmaktadır.

Anahtar Kelimeler:

Altın Cevherleri, Refrakterlik, DiagnosticLiç

APPLICATION OF DIAGNOSTIC LEACHING TECHNIQUE FOR REFRACTORY GOLD ORES

In this study, the refractory behavior of Kaletaş (Gümüşhane-Turkey) ore was investigated within a diagnosticapproach. Ultrafine grinding prior to cyanide leaching was also examined to enhance the gold recoveries. Two-stagecyanidation of ultrafinely ground ore was found to improve the extraction of gold to 93% with the implication ofpresence of readily recoverable gold and slowly dissolving gold in the ore. Diagnostic leaching provided an insightinto the refractoriness of the ore, which could be attributed to the very fine gold particles locked up largely within thecarbonates, oxides and sulfides and, to a small extent, within silicates present in the ore matrix.

Keywords:

Gold ores, Refractoriness, Diagnostic leach,

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