The paper describes a small full-scale plant based on the Gold-REC 1 process, designed and patented by University of L’Aquila; hydrometallurgical process allows treatment printed circuit boards (PCBs). first step is mechanical to reduce size scraps below 2 mm. extraction base metals occurs in reactor sulfuric acid/hydrogen peroxide solution. After filtration, solid leached again with thiourea f...

This paper provides an overview of hydrometallurgical copper extraction studies in which liquid technology has been used with four deposits different compositions. The sulfuric acid consumption rate and efficiency, are dependent on the initial content forms calcium compounds other impurities ore samples, were calculated, results presented herein. It was established that during leaching process,...

For more than 10 years, a revival of the interest for the partitioning of high active nuclear wastes (HAWs) exists worldwide in connection with possible improvements of the management of the HAWs actually produced and with futuristic nuclear fuel cycles. The main aim of the partitioning processes is to separate, from the complex mixtures of HAWs, the long-lived radionuclides (LLRNs), belonging ...

When obtaining sulfuric acid from pyrite concentrates, a significant amount of waste is generated in the form cinders that require disposal. The methods used processing this raw material are, as rule, pyrometallurgical processes chlorination and chloride sublimation, disadvantages which include increased energy consumption lack complexity extraction valuable components. Hydrometallurgical are l...

The hydrometallurgical method for processing chalcopyrite ore has gained enormous attention due to the environmental problems emanated by conventional pyrometallurgical route. Here, hydrometallurgy is considered an alternative that may be more of low-cost and environmentally friendly. Thus, alkaline leaching been effective, efficient, acceptable leachant dissolution. dissolution behaviour coppe...