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Showing 1 to 8 of 8 for “"Hydrometallurgical Processes"”.
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Evaluating the Potential of Scaling due to Calcium Compounds in Hydrometallurgical Processes
… study on calcium sulphate scale formation in hydrometallurgical solutions containing various minerals was conducted. A new database for the Mixed Solvent Electrolyte (MSE) model of the OLI Systems® software was developed through fitting of existing literature data such as mean activity, heat …
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The Development of Sustainable Hydrometallurgical Processes for the Recovery of Precious Metal
The study investigates the utilization of cedar wood bark as bioadsorbent for the adsorption and simultaneous precipitation of gold as flakes. This is with a view to establishing the electrochemical study of the adsorption and evaluate pre-treated cedar wood bark as possible adsorbent for gold in …
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RECYCLING OF PRECIOUS METALS FROM WASTE PRINTED CIRCUIT BOARDS VIA A COMBINATION OF PYRO AND HYDROMETALLURGICAL PROCESSES
… of precious metals than other electronic waste. Hydrometallurgical and pyrometallurgical processes are widely employed to recover metallic components from waste PCBs. Typically, mechanical separation is the initial step, followed by leaching and chemical separation to further isolate and process …
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Modeling and fault detection of an industrial copper electrowinning process
… eventually of the copper cathode. Unfortunately, hydrometallurgical processes are often difficult to monitor and control due to day-to-day fluctuations in the process as well as limitations in capturing the data at high frequencies. The purpose of this work is to model key variables in the copper …
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Hydrometallurgical extraction of platinum group metals from a low-grade ore concentrate
… BMs would need to be achieved, using low cost hydrometallurgical processes, to make the venture economically viable. These methods would exclude treatment via the smelter and pressure leaching: which are costly. energy intensive and result in leaching of large quantities of non-valuable …
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Dynamic simulation of the leaching and adsorption sections of a gold plant
… mechanical process, leaching and adsorption are hydrometallurgical processes which are of particular interest to chemical engineers. Leaching is a well-defined chemical processes in which gold is dissolved out of the rock by reaction with cyanide ions. The leaching process occurs in a series of …
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An electrochemical and leach study of the oxidative dissolution of chalcopyrite in ammoniacal solutions
… also the most stable, making it recalcitrant to hydrometallurgical treatment processes especially in atmospheric leaching. Hence, pyrometallurgical processes are traditionally used to treat chalcopyrite concentrates. However, ore grades are falling and concentration processes are becoming …
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An investigation into the precipitation of Fe(III) oxyhydroxides in lime neutralization processes
Acid Mine Drainage (AMD) and hydrometallurgical wastewater are products of extractive activities that pose environmental risks as they contain heavy metals. The contents of these streams, which is dominated by iron, necessitates an effective treatment protocol. The tendency of iron to precipitate …