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Biological gold recovery from gold–cyanide solutions
International Journal of Mineral Processing, 2005Abstract This paper describes a process for recovering gold from aqueous cyanide solutions using naturally occurring soil microorganisms. In this research, microbes successfully liberated gold cations from aurocyanide complexes. The gold was subsequently captured on iron and zinc electron donors.
Timur Aitimbetov +2 more
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Coal‐Gold Agglomeration: An Alternative Separation Process in Gold Recovery
Separation & Purification Reviews, 2009Considering the increasing environmental concerns and the potential for small gold deposits to be exploited in the future, the uses of environmentally friendly processes are essential. Recent developments point to the potential for greatly increased plant performance through a separation process that combines the cyanide and flotation processes.
AKÇİL, Ata Utku +2 more
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Recovery Spectrum of Quenched Gold
Journal of the Physical Society of Japan, 1971A characteristic substructure has been observed in the isochronal electrical resistivity recovery between -20 and +170°C of quenched 99.99 and 99.9999% pure gold measured at 4.2K. Most of the quenched-in resistivity recovers between 35 and 125°C were three distinct processes (1), (2), and (3) are observed.
K.B. Das, H.I. Dawson
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Predicting gravity separation gold recoveries
Mining, Metallurgy & Exploration, 1995A novel methodology for estimating gold recoveries in gravity-separation circuits is presented. The methodology makes use of a population-balance model. The model represents gold liberation, breakage and classification behavior and applies preconcentration and recovery-performance curves to gravity-recoverable gold.
A. R. Laplante +2 more
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Gold recovery from jewellery waste
Minerals Engineering, 2000Abstract This paper explores the potential of gold concentration from “handwashing waste” from jewellery workshops. Experiments were carried out by means of gravity separation equipment (in particular utilising the Knelson concentrator) after ascertaining that the gold occurs in the waste in the form of free particles and that the shape and size of ...
M. Delfini, A. Manni, P. Massacci
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GOLD RECOVERY FROM GUANIDINE RESINS
Separation Science and Technology, 2002This article describes some studies of dicyanoaurate anion elution from vinylbenzyl chloride resins containing guanidine ligands. The elution of gold (I) cyanide anions from loaded guanidine resin (resin with guanidine ligands) using sodium hydroxide eluent and modified caustic eluent: mixture of sodium hydroxide and sodium benzoate were studied.
Dorota Jermakowicz-Bartkowiak +1 more
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Chestnut pellicle for the recovery of gold
Bioresource Technology, 2009Recovery of Au(III) from hydrochloric acid medium by using crosslinked chestnut pellicle (CCP) gel was studied. Strong selectivity was observed for Au(III) showing negligible affinity for other precious metals and some base metal ions tested. The adsorption isotherm study exhibited the maximum loading capacity of the gel as high as 10.6 mol or about 2 ...
Durga, Parajuli +5 more
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Gold recovery from dilute gold solutions using DEAE-cellulose
Hydrometallurgy, 2009Abstract The present work investigates gold recovery using DEAE-cellulose, a common biopolymer derivative, from synthetically prepared diluted gold-bearing solutions of 50 ppm. The effects of different recovery parameters on gold recovery efficiency were studied in detail. It was demonstrated that gold recovery efficiency increased with an increasing
Cigdem Tasdelen +3 more
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Recovery of gold from gold slag by wood shaving fly ash
Journal of Colloid and Interface Science, 2005Wood shaving fly ash was used as an alternative adsorbent for gold preconcentration from gold slag. The maximum gold adsorption capacity of wood shaving fly ash washed with tap water (WSFW) at 20, 30, 40, and 60 degrees C was 8.68, 7.79, 7.44, and 7.25 mg(Au)/g(adsorbent), respectively, while of activated carbon it was 76.78, 60.95, 56.13, and 51.90 mg(
Amphol, Aworn +2 more
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