Interest for application of hydrometallurgical processes in a processing of complex sulphide ores and concentrates has increased in recent years. Their application provides better metal recoveries and reduced emission of gaseous and toxic ageneses in the environment. The kinetics and mechanism of sphalerite leaching from complex sulphide concentrate with sulphuric acid and sodium nitrate soluti...

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...

This paper describes the equilibrium morphologies of zinc sulfide nanoparticles in the wurtzite phase as a function of size, determined using ab initio Density Functional Theory (DFT) simulations and a shape-dependent thermodynamic model predicting the Gibbs free energy of a nanoparticle. We investigate the relative stabilities of a variety of nanoparticle shapes based on the wurtzite structure...

The electrical properties of metal-organic-chemical-vapour-deposited copper zinc sulphide (Cu-Zn-S) thin films on soda-lime substrates were studied. produced characterized in terms their employing the Four-point probe procedure at a temperature range 370 to 470°C. (resistivity and conductivity) deposited systematically studied deposition parameters concentration temperature. conductivity was in...

Zinc sulphide nanoparticles (ZnS NPs) were successfully synthesized by chemical co-precipitation method at 20°C and 40°C using zinc chloride (ZnCl2 ) sodium (Na2S) as precursors. Ascorbic acid was used a capping agent. The ZnS NPs characterized X-ray diffraction (XRD), UV-visible Fourier transform infrared (FTIR) spectroscopy. spectra showed that the bandgap of 3.8-3.9 eV two different temperat...