In this study, a combined process consisting of salt roasting and acid leaching was conducted to recover copper per sulphide concentrate with 43.5% chalcopyrite. The chalcopyrite roasted in the absence presence potassium chloride (mass ratio concentrate:KCl from 1:0.5 1:0.9) at various temperatures (400-600°C) different times (1-4 hours) under air atmosphere. dissolved sulphuric solution (60 g/...

In this work, we present as investigation of chalcopyrite leaching under different leach conditions for how liquidation and surface of chalcopyrite study using Scanning Electron Microscopy (SEM) to determine the composition of the passivation layer in the surface of chalcopyrite. The study of chalcopyrite dissolution were in H2SO4 solution systems at pH of 1.2, with 5% chalcopyrite concentrate ...

Indonesia is a leading producer of wide range minerals, including copper. Nonetheless, the copper-based industry in still not well developed, especially limited number products from intermediate copper which will become raw materials for its downstream industry. The underdeveloped has forced to import several types semi-finished meet needs On other hand, mining exports concentrate and some cath...

The heterogeneity and local distribution of elements are established as a result the study nonferrous metals composition domestic wastes processing concentrate containing 20–40% copper, 40–50% brass, 20–28% zinc up to 1% aluminium. Metals mainly concentrated in granules three types: zinc-based, copper-based copper–zinc alloy, i.e., brass. phase these granule types their structure determined. Zi...

Although bioleaching of chalcopyrite by thermophilic microorganisms enhances the rate of copper recovery, a high temperature accelerates iron precipitation as jarosite, which can bring many operational problems in the industrial processes. In this research work, the bioleaching of chalcopyrite concentrate by the thermophilic Acidianus brierleyi was studied, and the microbial grow...

The effects of ferrous and ferric iron as well as redox potential on copper and iron extraction from the copper flotation concentrate of Sarcheshmeh, Kerman, Iran, were evaluated using shake flask leaching examinations. Experiments were carried out in the presence and absence of a mixed culture of moderately thermophile microorganisms at 50 ̊C. Chemical leaching experiments were performed in the...

Background: Contamination of the environment due to heavy metals is a major concern to human life and the environment. This study was conducted to investigate and quantify the copper and zinc concentrations in industrial estates soil in Arak, Iran. Methods: Four industrial estates were considered for the experimental design, including Arak 1, Arak 2, Arak 3, and Ghotbe Sanaati. For prelimin...

The Cerattepe (Artvin) mine contains volcanogenic massive sulfide (VMS) deposits in northeastern Turkey. This is a kuroko type deposit located Late Cretaceous volcanic, intrusive and sedimentary rocks, has structure with dense alteration stages. In this study, batch flotation tests were carried out to determine the behavior of new sample (mix ore), that was combination two different ores behavi...

At present, copper smelting slag is not effectively recycled and wasted. Copper contains FexO at more than 40 mass%. For the utilization of as a Fe resource, it necessary to separate Cu in slag. recycling from slag, FeS-based matte can be introduced use sulfurization concentrate into sulfide finally recover copper. In previous paper, kinetic model was developed simulate coupled reactions betwee...