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202022 · Experimental Materials The tellurium-bearing gold flotation concentrate was obtained from a tellurium-type gold mine in Qinling Mountains, Shannxi Province, China. Table I shows the chemical composition of the samples and Table II shows the main mineral content. The distribution of major elements in the minerals is shown in Table III.
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202191 · Abstract Co (II) is effective in catalyzing gold thiosulfate leaching, but Co (III) has seldom been adopted directly as the catalyst. This paper examined the effect of hexaamminecobalt (III) on the thiosulfate leaching of gold from a concentrate calcine and the gold recovery via resin adsorption from the leach solution.
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In this research, we studied the use of microwave pretreatment to enhance the efficiency of Au leaching from gold concentrate. The gold concentrate was pretreated using microwaves with different irradiation time. The sample temperature was increased up to 950 °C by the microwave irradiation. A scanning electron microscope-energy dispersive spectrometer …
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20231221 · Gold concentrate from Stage 1 bench-scale testing contained very pleasing levels (concentrate grades for Tests A & B after cleaning were 47.28 g/t and 46.18 g/t respectively) as shown on the below table.
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2021123 · A concentrate with an average grade of 30.0 g/t gold was obtained using the mechanical flotation cell process, while the total recovery was between 90 and 95%. For the purposes of increasing the production of gold, shortening the process and increasing production efficiency.
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2020815 · Mineralogical studies on the concentrate showed that very fine gold grains (<10 μm) were encapsulated in pyrite and arsenopyrite, while the proportion of monomer gold was only 21%. The gold-bearing sample was identified as a high-sulfur fine-sized wrapped-type refractory gold concentrate.
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202251 · Highlights • An efficient gold lixiviant is synthesized by a simple roasting process. • The synthetic lixiviant has a gold leaching efficacy comparable to NaCN. • The synthetic lixiviant achieves faster gold leaching kinetics than NaCN. • The lixiviant can leach 97.5% of gold from a gold concentrate in 24 h. • Activated carbon adsorption efficiently …
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202311 · Highlights • An innovative two-stage chemical-biological oxidation process was proposed. • The ferric iron contained in the bio-oxidation waste solution was rationally reused. • Chemical oxidation created some favorable conditions for subsequent bio-oxidation. • Bio-oxidation efficiency of high arsenic and sulfur gold concentrate was …
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American Elements offers gold concentrate with a majority gold base component. Preparation of gold concentrate typically involves the removal of water from an gold solution. American Elements specializes in producing high purity Gold Concentrate with the smallest possible average grain sizes for use in preparation of pressed and bonded ...
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