Cyanide Solution With Cyanide Since the 1890s, cyanide has been used to recover from bearing ores. And today, over 115 years later, most of the worlds is recovered with cyanide playing a large part in the beneficiation of the yellow precious metal.
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Chlorine leaching, as a potential alternative to the conventional cyanidation for the extraction of gold, was tested on a sulphide concentrate and its calcine from the Pearl River Area, South China. The basic feasibility of using the resin-in-leach RIL technique in chlorine leaching of the gold-bearing sulphide concentrate and its calcine is discussed.
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Total is reported from and fire assays, at grades of >0.2 g/t the is recovering 95.5% of all . RC Samples for the exploration holes are riffle split to c. 3 kg samples labelled, tagged and stored at company offices before collection by Intertek Ghana.
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Due to formation of CaOCl+ complex in solution and hence less reactivity, calcium hypochlorite produces a sluggish gold leaching kinetics, taking twice the time 46 h to achieve maximum gold recovery of 58% compared to sodium hypochlorite. 10 g/L of total initial hypochlorite species in solution produces reasonable gold recoveries.
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Several variables for such as the concentration of HCl and NaOCl as well as solid-liquid ratio have been optimized. ... Keywor ds: or e, , hypo -choride ...
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In this research, oxidation of sulfide minerals and of from a –bearing sulfide concentrate using chloride–hypochlorite solution was investigated. The effects of calcium hypochlorite concentration, sodium chloride concentration and initial pH of leachant on changes of the slurry pH and Eh were examined.
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The absence of retrograde alteration in the Fortitude skarn suggests that this may have been the case there, as fluids were channeled into the Liberty fault system, producing ores associated with actinolite, , and pyrite in the Upper Fortitude and Tomboy-Minnie deposits.
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It is obtained by mixing three parts of concentrated hydrochloric acid HCl with one part of concentrated nitric acid HNO. 3. Moreover, it usually contains a halogen or even a certain amount of hydrogen peroxide to increase the dis- solution rate. Upon dissolution in this media, gold forms the stable tetrachlo-.
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