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20161212 · Hydrometallurgy source is linked to alchemists that tried the transmutation of some metals to gold. The modern hydrometallurgy was born in 1887 when two important processes were invented: gold recovery through cyanide treatment and the Bayer Process for aluminum production (Habashi 2005 ).
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In the last two decades a considerable number of new hydrometallurgical processes have been developed and implemented in gold industry allowing the economical treatment of increasingly complex and lower grade ores as well as refractory ores. As a result, all over the world the production of gold has almost doubled in the last 20 years. In order to overcome …
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2020315 · Based on the existing research results [9], [10] on the safety control for the thickening process of gold hydrometallurgy, this paper considers that how to establish effective model to solve the safety control problem when the data information of …
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201221 · Thiocyanate hydrometallurgy for the recovery of gold. Part IV: Solvent extraction of gold with Alamine 336 - ScienceDirect Download full issue Search ScienceDirect
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202091 · Refractory Au-Ag ore Hydrometallurgical recovery Manganese Gold Silver 1. Introduction Gold and silver are important precious metal elements with significant economic value. There are many types of gold-silver ore resources. The various occurrence states of gold-silver can be divided into independent gold-silver ores and associated gold-silver ...
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199171 · Of the halogens, the gold iodide complexes are the most stable in aqueous solutions. A series of experiments were performed to investigate the kinetics and mechanism of the leaching reaction between gold and iodide. Using a rotating disk technique, the effects of rotation speed, iodide and iodine concentration, temperature, pH and the presence ...
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2002101 · The application of ammonium thiosulfate for the treatment of copper–gold ores has been investigated. Copper minerals and copper–gold samples were leached in an ammonium thiosulfate solution under varying experimental conditions, i.e. aeration, temperature and reagent addition. The behaviour of thiosulfate, tetrathionate and sulfate …
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201731 · This paper develops a safe control scheme under the abnormity based on Bayesian network (BN) for the thickening process of gold hydrometallurgy. By analyzing the causes and corresponding solutions of the abnormity, the operator experience of removing the abnormity is transformed to BN which is used to make safe decisions automatically.
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Very few of the transition metals are found in nature as free metals (e.g., gold and silver). Consequently, almost all metallic elements must be isolated from metal oxide or metal sulfide ores. Metallurgy is the set of processes by which metals are extracted from their ores and converted to more useful forms. Metallurgy consists of three general steps:
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Historically, gold and silver are the main target metals for E-waste hydrometallurgy, but in recent years, interests in the recovery of other metals like copper, nickel and cobalt are increasing.
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