Passivation of chalcopyrite during the leaching with sulphuric acid solution in presence of sodium nitrate
نویسندگان
چکیده
منابع مشابه
Kinetics and Mechanism of Sphalerite Leaching by Sodium Nitrate in Sulphuric Acid Solution
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...
متن کاملThe role of catalyst in the passivation of chalcopyrite during leaching
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 ...
متن کاملKinetics of Sphalerite Leaching by Sodium Nitrate in Sulfuric Acid
In the present work, the extraction of zinc from a sphalerite concentrate using sodium nitrate as an oxidant in a sulfuric acid solution was investigated. The effective parameters such as the temperature, sulfuric acid and sodium nitrite concentrations, stirring speed, particle size, and solid/liquid (S/L) ratio were analyzed. The dissolution rate increased with increase in the sulfuric acid an...
متن کاملThe Influence of Mechanical Activation of Chalcopyrite on the Selective Leaching of Copper by Sulphuric Acid
Base metal sulphides are an important source of various metals. They are typically intergrowth and due to the complex nature of their ores, the hydrometallurgical technique is the very convenient way of extracting the desired component. If it is possible to extract the metal from an ore selectively, the subsequent processing steps become less complicated. Mechanical activation seems to be a fav...
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ژورنال
عنوان ژورنال: Hemijska industrija
سال: 2010
ISSN: 0367-598X,2217-7426
DOI: 10.2298/hemind100312013s