Biooxidation of a gold-bearing pyrite-arsenopyrite concentrate
نویسندگان
چکیده
منابع مشابه
BIOOXIDATION OF MOUTEH REFRACTORY GOLD-BEARING CONCENTRATE BY AN ADAPTED THIOBACILLUS FERROOXIDANS
The Mouteh refractory pyrite concentrates at pulp densities of 1.5%, 3%, 4.5% and 6% were treated, using Thiobacillus ferrooxidans DSM 581 and the same bacteria adapted on the Mouteh pyritic concentrate. Compared with a non-adapted culture, use of an adapted inoculum of T. ferrooxidans increased bioleaching rate of iron by a factor of 1.940, 2.011, 1.859 and 1.559 for pulp densities 1.5%, 3%, 4...
متن کاملbiooxidation of mouteh refractory gold-bearing concentrate by an adapted thiobacillus ferrooxidans
the mouteh refractory pyrite concentrates at pulp densities of 1.5%, 3%, 4.5% and 6% were treated, using thiobacillus ferrooxidans dsm 581 and the same bacteria adapted on the mouteh pyritic concentrate. compared with a non-adapted culture, use of an adapted inoculum of t. ferrooxidans increased bioleaching rate of iron by a factor of 1.940, 2.011, 1.859 and 1.559 for pulp densities 1.5%, 3%, 4...
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In this paper, gold leaching of a refractory sulfide concentrate by chloride–hypochlorite solution was investigated and effects of stirring speed, temperature and particle size on the leaching rate were reported. Experimental data for leaching rate of gold were analyzed with the shrinking–core model. Results were consistent with chemical reaction control mechanism in the first 1 h of leachin...
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This article lists a number of geological data on the conditions of formation of some major gold deposits in the conglomerates of the Earth's crust. We analyze the metallogenic, tectonic, stratigraphic and other factors controlling the formation of gold-bearing conglomerates in certain fields, such as the Witwatersrand (S. Africa) and Darwaz (Tajikistan). The following tectonic factors play the...
متن کاملStability and solubility of arsenopyrite, FeAsS, in crustal fluids
The stability and solubility of natural arsenopyrite (FeAsS) in pure water and moderately acid to slightly basic aqueous solutions buffered or not with H2 and/or H2S were studied at temperatures from 300 to 450°C and pressures from 100 to 1000 bar. The solubilities of FeAsS in pure water and dilute HCl/NaOH solutions without buffering are consistent with the formation of the As(OH)3 (aq) specie...
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ژورنال
عنوان ژورنال: FEMS Microbiology Reviews
سال: 1993
ISSN: 0168-6445,1574-6976
DOI: 10.1111/j.1574-6976.1993.tb00282.x