samples of the waste rock obtained from marofengin south africa ground 60, 70 and 80% passing 75µm were leached with cyanide in bottle roll tests. the results obtained showed that the percentage gold dissolution depends more on the ore size consists than on the cyanide concentration with the highest average dissolution rates of 88.75, 94.34 and 95.90% found at 600, 500 and 500 ppm, for 60, 70 a...

Environmental desulfurization is gaining attention as an efficient approach to manage sulfidic mine tailings by separating sulfide minerals from tailings. While extensive research has been done reuse desulfurized in site reclamation, the responsible management or potential of valorization concentrates did not receive much attention. The objective this study was evaluate recover Au originating a...

Bacterial pre-oxidation of refractory gold concentrates generates large volumes leachate and requires a significant supply nutrients to support bacterial growth. Therefore, bioleachate reuse reduces both water consumption the required for process. However, efficiency this method its benefit need be further explored. In present study, two tests on in new cycles oxidation were carried out evaluat...

This study involved preliminary laboratory test work to identify the relative leaching response to cyanidation and thiourea leaching of an oxidized low grade gold ore based on characterization studies. Huge reserves of gold deposits have been reported from different parts of Iran, especially at Neishaboor area with gold grade of approx 4 ppm. For the mineralogical composition, the nature of the...

Samples of the waste rock obtained from Marofengin South Africa ground 60, 70 and 80% passing 75µm were leached with cyanide in bottle roll tests. The results obtained showed that the percentage gold dissolution depends more on the ore size consists than on the cyanide concentration with the highest average dissolution rates of 88.75, 94.34 and 95.90% found at 600, 500 and 500 ppm, for 60, ...

Mining trends in the gold sector indicate a growing imbalance global supply and demand chains, especially light of accelerated efforts towards industrial electrification automation. As such, it is important that research development continue to focus on processing options for more complex refractory ores. Unlike conventional (i.e., free-milling) ore feeds, not amenable standard cyanidation, req...

Gold recovery from limited global resources has gained increasing attention due to a growing demand for gold and heightened social awareness of the high toxicity environmental threat traditional cyanidation. This led development biomining methods extract low-grade ores variety wastes using microbes generate required reagents. One such method, biocyanidation, potential be an environmentally frie...