Dense medium separation (DMS) is often used to reject a large portion of gangue material upfront create cost and energy savings during processing. As lower-grade ores with complex mineralogy are being increasingly exploited, the properties minerals begin play more important role in upgrading ore. It therefore understand these mineralogical factors be able select suitable processing routes for s...

The most exciting advances in biohydrometallurgy are occurring in the field of microbiology. The two main technologies employed in biohydrometallurgy, agitated tanks for the processing of refractory concentrates and heaps and dumps for the processing of low-grade ores, are technologically sound and widely practised at commercial scale, but their development began at a time when very little was ...

Abstract Mining of “invisible gold” associated with sulfides in gold ores represents a significant proportion production worldwide. Gold hosted sulfide minerals has been proposed to be structurally bound the crystal lattice as sulfide-gold alloy and/or occur discrete metallic nanoparticles. Using combination microstructural quantification and nanoscale geochemical analyses on pyrite from an oro...

A comprehensive heap leach model, developed within a computational fluid dynamics software framework, provides a modeling tool to capture reactive dissolution in low grade ores of oxide and sulfide minerals. These systems involve suites of very complex reactions, which are closely coupled with thermal conditions and key microbial populations. One of the key challenges when modeling heap leach s...

Conventional separation methods are not suitable for recovering palladium present in low concentrations in ore leaching solutions. In this study, a novel isopentyl sulfide (S201)-impregnated α-MnO₂ nanorod adsorbent (BISIN) was prepared, characterized, and applied for the selective adsorption and separation of palladium from the leaching liquor of ores. Batch studies were carried out, and the m...

As the depletion of zinc sulfide ores becomes more severe, investigations into recovery from oxide have aroused interest. In this regard, acid-based hydrometallurgical treatment strategies had great effectiveness. However, they are inadequate for low-grade ores. study, we examined alkaline gossan that bear zinc, such as siderite and limonite. Additionally, particular note, effects a leaching ag...

The Mt. Rudnaya MSS-ISS (monosulfide and intermediate solid solution) fine-grained ores from a NE termination of Norilsk 1 deposit were analyzed using combination X-ray computed micro tomography, spectral tomography scanning electron microscopy to achieve both, 2D 3D data. consist ISS composed tiny lamellar intergrowths cubanite chalcopyrite solutions, which form up 4-mm distinct globules surro...

In the present work, the extraction of zinc from a sphalerite concentrate using sodium nitrate as an oxidant in a sulfuric acid solution was investigated. The effective parameters such as the temperature, sulfuric acid and sodium nitrite concentrations, stirring speed, particle size, and solid/liquid (S/L) ratio were analyzed. The dissolution rate increased with increase in the sulfuric acid an...