Wastes from old electronic devices represent a significant part of the scrap generated in developing countries, being commonly sold by collectors as low-value material to recycling hubs abroad. Upgrading quality this waste type could drive revenue recyclers, and thus, boost market. On basis, study investigated possibility concentrating metals wasted printed circuit boards through physical separ...

The subsoil of Morocco is marked by a wealth mineral resources (phosphate, lead, zinc, coal and others). For this reason, the mining sector still considered one main pillars national economy. Moroccan lead deposits are located mainly in Atlas region Eastern region. Zellidja smelter company has succeeded distinguishing itself being among best smelters Morocco. It known nationally internationally...

Most of the dust generated from the copper smelting process in Chili has been stored after the stabilization by hydrometallurgical process because it contains high concentration of arsenic. However, in recent years, the generation of dust has increased because of degrading the quality of concentrate. In addition, the environmental regulations become stricter. On the other hand, valuable metals ...

The aim of the present work was to perform copper, nickel, and platinum group metals (PGMs) recovery from low-grade copper–nickel concentrate containing pyrrhotite, pentlandite, chalcopyrite by bioleaching in stirred tank reactors batch mode subsequent cyanidation. contained (%) Fe 32.7, Cu 0.7, Ni 2.3, Stotal 20.9, Ssulfide 17, 0.1 g/t Pt, 1.35 Pd. performed at 30 40 °C using two different mic...

Structural Current Collectors In article number 2202321, Jae Young Seok, Sanha Kim, and co-workers introduce a structurally hierarchical copper current collector for lithium metal battery anodes. The nanorods inside the micro-cavities concentrate local electrical field onto inner surfaces of microstructures, enabling inward nucleation lithium. subterraneously grown tends to agglomerate, resulti...

More than 80% of the world’s production of zinc from its concentrate is obtained by the roastleach-electrowin hydrometallurgical process. In the roast-leach process, very pure zinc sulphate solution must be prepared for zinc electrowinning, therefore, the purification process is one of the most important unit processes in zinc hydrometallurgy. The conventional methods for the zinc solution puri...

Copper and cobalt demand is projected to be increased from here 2050 the challenge find treat economically minerals which contains those metals. Several tailings oxide ores throughout word contain good grades of copper that should recovered by froth flotation. This paper investigates recovery through reprocessing spiral classifier determination specific reagents dosage. The flotation behaviours...

Bacterial isolates assigned to the species Alicyclobacillus tolerans, which occupies an intermediate position between organotrophic genus and mixotrophic Sulfobacillus, were revealed as members of acidophilic chemolithotrophic community during stirred-tank bioleaching violarite–pentlandite–chalcopyrite concentrate at 40 °C. Surprisingly, this succeeded more common iron-oxidizing after a series ...

Arsenic is the 20th most abundant element in the earth's crust at a level of about 2 ppm. It is a constituent of over 300 minerals and is commonly found in non-ferrous ores such as copper, lead, zinc, gold and uranium. Efficient separation of arsenic minerals from other sulphide minerals is of great importance for the metallurgical performance of flotation processes. This work was undertaken to...