GOSSAN YAPILI CEVHERLERDE Au/Ag KAZANIMI ÜZERİNE SİYANÜRLEME PARAMETRELERİNİN ETKİSİ

Year 2018, Volume: 7 Issue: 3, 1203 - 1208, 28.12.2018

Emine Yoğurtcuoğlu , İbrahim Alp

https://doi.org/10.28948/ngumuh.502455

Cited By: 1

Abstract

   Bu çalışma
da, Niğde Ulukışla Gossan yapılı altın gümüş cevherlerine, alkali ortamda
siyanür parametresinin etkinliği incelenmiştir. Cevherin mineral yapısında;
demir cevherleri (limonit-götit-lepidokrosit), çinko mineralleri
(smitsonit-hidrozinkit-hemimorfit), kurşun mineralleri (serüzit-plumbojarosit)
ve gang mineralleri (kil-kuvars-kalsit) bulunmaktadır. Tüm bu minerallerin yanı
sıra cevherdeki farklı jarosit formları da Gossan cevheri yapısı ile uyumludur.
Cevher mikroskobisi ile altının limotit-götit-lepidokrosit mineralleri ile
beraber bulunduğu belirlenmiştir. Direk siyanürleme testlerinde altın ve gümüş
düşük verimlerle kazanılmıştır. Bu amaçla, siyanürleme öncesinde sıcak alkali
kireç ön işlemi ve ardından da siyanür araştırmaları gerçekleştirilmiştir.
Siyanür miktarı tayini 24 saat ve 60°C sıcaklıkta, 0,125-4 g/L NaCN
konsantrasyonları arasında, siyanür süre araştırmaları ise, 1,5 g/L NaCN
konsantrasyonunda, 60 °C sıcaklıkta, 1-84 saat arasındaki sürelerde
gerçekleştirilmiştir. Sonuçta, altının % 64-97 arasına, gümüşün de % 55-76
arasına kadar arttığı belirlenmiştir. 

Keywords

Gossan, altın/gümüş, jarosit, kireç, siyanür prosesi

THE IMPACT OF THE CYANIDATION PARAMETERS ON Au/Ag RECOVERY IN GOSSAN STRUCTURED ORES

Abstract

In this study, the
activity of cyanide parameter in alkali media was investigated in gold-silver
ores of Niğde-Ulukışla-Gossan. Mineral structures of the ore are; iron ore (limonite-goethite-lepidocrocite),
zinc minerals (smitsonite-hydrozincite-hemimorphite), lead minerals (cerrussite-plumbojarosite),
and gangue minerals (clay-quartz-calcite) are present. In addition to all these
minerals, different jarosite forms in the ore are also compatible with Gossan
ore structure. It has been determined with the ore microscope that gold
together with limonite-goethite-lepidocrocite minerals. In the direct cyanide
tests, gold and silver were gained with low yields. For this purpose, hot
alkali lime pre-treatment followed by cyanide investigations was carried out
before cyanidation. The amount of cyanide was determined at 24-hours and 60°C
temperature, between 0.125-4g/L NaCN concentrations, while cyanide time studies
were carried out at a concentration of 1.5g/L NaCN at 60°C for 1-84hours. As a
result, it has been determined that between 64-97% Au and 55-76% Ag are
increased.

 

Keywords

Gossan, Gold/Silver, Jarosite, Lime, Cyanide process

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