Generated by zinc hydrometallurgical production and containing several toxic species, jarosite has been little used or beneficiated to date. Utilization of can save mining resources producing valuable products, reduce potential hazards from disposal. To avoid high energy consumption as in the roasting steps current process, hydrometallurgy various an original process aimed at zinc-iron alloys i...

In this paper, the leaching behavior of the major metals present in printed circuit boards waste is evaluated, aiming at its recycling by hydrometallurgy. Several leachants were compared (sulfuric, hydrochloric and nitric acids, at 2 M H concentration), at temperatures of 25oC and 90oC and 4 hours of reaction time. Sulfuric acid leaching was not very promising concerning metals dissolution bein...

In the specific smelting process of non-ferrous metals, hydrometallurgy technology is widely used in this field and plays an important role. Modern hydrometallurgical covers a wide range fields. Except for steel, other related metals can be refined by method. It has great adaptability many This article briefly introduces pressurized zinc smelting, hoping to bring some inspiration everyone.

Abstract The past 10–20 years have seen numerous academic papers describing the benefits of ionic liquids (ILs) and deep-eutectic solvents (DESs) for leaching, solvent extraction electrowinning. scientific community—including authors this opinion article—have frequently proclaimed these neoteric as game-changers in extractive metallurgy. Despite this, there been no commercial breakthroughs. In ...

One of the main sources non-ferrous and precious metals is sulfide ores. This paper presents a review existing literature on electrochemical properties some most common industrial sulfides, such as pentlandite, chalcopyrite, sphalerite, galena, pyrrhotite, pyrite, etc. The study results surface redox transformations minerals, galvanic effect, cathodic oxygen reduction reaction sulfides are pres...

Metal accumulation in the environment as a result of mining and metallurgical activities is arising as a matter of serious concern. The removal and recovery of metals from hydrometallurgical solutions and waste water prior to their release to the environment are important in preserving the ecosystem as well as from an economical perspective. There are several technologies used to recover metals...

Sustainable mining and mineral processing is of paramount importance for producing metals needed our society development. Membrane processes are able to contribute the comprehensive extraction from mined ores, while at same time decrease amounts used water reagents ensure discharge environment wastewater meeting legislation requirements. Membranebased technologies still underused in obtaining a...