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Coal‐Gold Agglomeration: An Alternative Separation Process in Gold Recovery [PDF]

Separation & Purification Reviews, 2009
Considering 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, WU, X. Q., Aksay, E. Kilinc   +2 more
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Bioprocessing for Enhanced Gold Recovery [PDF]

Mineral Processing and Extractive Metallurgy Review, 1992
The use of autotrophic and heterotrophic microorganisms in the solublisation of gold from refractory sulphides and oxide ores is discussed. Basic microbiological characteristics of the leaching bacteria are outlined. Reaction mechanisms in the biooxidation of gold-bearing arscnopyrite and pyrite an: illustrated with special reference of Thiobacillus ...
Natarajan, K. A.
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Chestnut pellicle for the recovery of gold

Bioresource Technology, 2009
Recovery 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, Chaitanya Raj, Adhikari, Hidetaka, Kawakita, Sayaka, Yamada, Keisuke, Ohto, Katsutoshi, Inoue   +5 more
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Gold Recovery from E‐Waste by Food‐Waste Amyloid Aerogels [PDF]

Advanced Materials
Demand for gold recovery from e-waste grows steadily due to its pervasive use in the most diverse technical applications. Current methods of gold recovery are resource-intensive, necessitating the development of more efficient extraction materials.
Raffaele Mezzenga
exaly   +2 more sources

Recovery Spectrum of Quenched Gold

Journal of the Physical Society of Japan, 1971
A 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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The Mineralogy of gold and its relevance to gold recoveries

Mineralium Deposita, 1990
Processing of most gold ores, other than placers, involves conventional gravity separation and direct cyanidation. The difficult (or refractory) gold ores are not amenable to direct cyanidation and these ores require detailed mineralogical investigations to assist in determining the recovery processes.
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Biological gold recovery from gold–cyanide solutions

International Journal of Mineral Processing, 2005
Abstract 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, Daniel M. White, Indranil Seth   +2 more
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RECOVERY OF GOLD FROM THE TEETH

Journal of the American Medical Association, 1932
To the Editor: —Apropos of your editorial "A Suggested Treatment for the Depression," in which you speak of recovering the gold from teeth, several years ago I called attention to a type of gold digger: the sifter of human ashes. It was a true story, too; the manager of a crematory sifted the ashes of the dead and took the metal to a refiner, who ...
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Recovery of gold from gold slag by wood shaving fly ash

Journal of Colloid and Interface Science, 2005
Wood 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, Paitip, Thiravetyan, Woranan, Nakbanpote   +2 more
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Recovery of Secondary Gold

1991
The cleanest kinds of precious metal scrap are old jewelry, metal parts of old dentures, and the dust and bits produced in the manufacture of jewelry or dentures. Old jewelry may be made of sterling1 silver, carat2 gold (alloyed gold), or of base metals plated with gold.
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