Gine Cumhuriyeti Siguiri bölgesi altın cevherinin fiziksel ve kimyasal yöntemlerle zenginleştirilmesi

Since the Africa is endowed with important mineral reserves, it attracts the attention of all countries and investors. In particular, the continent has large deposits of placer gold ore with high gold content. In this study, the enrichment of gold ores samples collected from Siguiri basin within the borders of the Republic of Guinea was carried out and alternative process flowsheets were created. In this context, the recovery possibilities of gold in the ore were revealed using Mozley table and Knelson separator, which separate minerals according to the specific gravity difference, and cyanide leaching experiments, which is one of the chemical enrichment methods. As a result of three-stage enrichment with the Mozley table, a heavy product (concentrate) with 186.91 g/t Au grade was obtained with 89.1% recovery, while with the three-stage Knelson separator application, a concentrate assaying 149 g/t Au was obtained with 86.1% gold recovery. Furtermore, in the cyanide leaching experiment with 2 g/L NaCN concentration, 94.9% Au dissolution efficiency was achieved for 48 hours of leaching, yet this value was 91.9% with 1 g/L NaCN concentration and lower leaching time (24 hours).