Results 81 to 90 of about 1,040,720 (337)
Application of alternative lixiviants for secondary heap leaching of gold
, 2000 Some preliminary results on the secondary leaching of previously heap leached gold ore are presented. Alternative lixiviants for gold comprising chlorine, thiourea and thiosulphate were compared with cyanide using bottle roll tests.
Nikoloski, A., Stockton, B.
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Advanced Intelligent Discovery, EarlyView.Predictive models successfully screen nanoparticles for toxicity and cellular uptake. Yet, complex biological dynamics and sparse, nonstandardized data limit their accuracy. The field urgently needs integrated artificial intelligence/machine learning, systems biology, and open‐access data protocols to bridge the gap between materials science and safe ...
Mariya L. Ivanova +4 more
wiley +1 more source
The dissolution of gold colloids in aqueous thiosulfate solutions
, 2008 The kinetics of the dissolution of gold and silver colloids in ammoniacal thiosulfate solutions has been studied using oxygen, copper(II) or oxygenated copper(II) as oxidants at pH 9 - 11 and temperature 22oC to 48oC.
Zhang, Xinmin
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Recovery of gold from thiosulfate solutions and pulps with anion-exchange resins
, 2002 With growing environmental and occupational safety concerns over the use of cyanide in gold processing, more acceptable alternatives are receiving increased interest. The most promising of the possible alternatives is thiosulfate.
O'Malley, Glen Peter
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Effect of sodium carbonate on alkaline self-leaching of gold from flotation gold ore
, 2021 Oxygen pressure alkaline self-leaching of gold is an environmentally friendly and smokeless leaching process. But the insoluble iron oxide generated will precipitate on the surface of parent minerals, thus reducing the oxidation reaction and gold ...
Wu, Hao +4 more
core +1 more source
Trace elements deportment in gold process solutions
, 2010 The deportment and speciation of trace elements during mining and minerals processing is becoming an area of increasing concern with regards to potential health and environment risks within the immediate vicinity and surrounding area of mining and ...
May, P., Kyle, J., Gella, V.
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An innovative thiourea gold leaching process
Hydrometallurgy, 1998 The aim of this experimental work was devoted to the preliminary evaluation of the feasibility of thiourea leaching for the extraction of gold from a domestic gold-bearing ore 4 grt Au, at laboratory scale. The study has permitted identification of the influence of temperature, leaching agent concentration, pulp density and leaching time on the gold ...
SUbaldini +3 more
openaire +2 more sources
EFFECT OF PRESSURE ON GOLD CYANIDE LEACHING
SUSTAINABLE EXTRACTION AND PROCESSING OF RAW MATERIALS, 2021 Although the effect of high oxygen pressure on gold recoveries at elevated slurry temperatures was previously investigated, the sole effect of the pressure at ambient temperatures on cyanide leaching with the presence of nearly enough oxygen for the cyanide reactions to occur has not been found to be studied. This research work was carried out with the
openaire +3 more sources
Embedding Chemistry and Pharmacy Into Sustainability
Angewandte Chemie International Edition, EarlyView.Chemistry and pharmacy provide products and processes that are indispensable for our high living standard. To understand their relationship with sustainability is important to allow them to contribute to sustainability in a sustainable manner. An integrated overview of green, circular, and sustainable chemistry and pharmacy is given and how they have t
Klaus Kümmerer
wiley +1 more source
On the progression of leaching from large particles in heaps
, 2012 Includes bibliographical references.Although heap leaching is by now a well-established technology choice in the mining industry, the process remains limited by low recoveries and long extraction times.
Ghorbani, Yousef
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