Results 211 to 220 of about 710,769 (238)

The influence of cyanide on the flotation of pyrite from Witwatersrand gold leach residues

Minerals Engineering, 1995
Abstract A significant portion of the gold in Witwatersrand ores may occur in the pyritic fraction, which seldom comprises more than 4% of the ore. Consequently, pyrite recovery through flotation offers the opportunity to improve gold recoveries through further treatment of the pyritic concentrate.
J.R. De Wet, G. Hodgkinson, P.C. Pistorius, L.C. Prinsloo, R.F. Sandenbergh   +4 more
openaire   +1 more source

Cyanide residue levels in extracted honey, comb honey and wax cappings.

Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, 1979
Cyanide (CN) residue levels were determined in samples of extracted honey, comb honey and was cappings at 1 hr, 24 hr, and 48 hr intervals after destroying the bees in honey bee colonies with normal (ca. 8.5 g) and twice normal (ca. 17 g) doses of CyanogasR A-dust.
M, Ihnat, D L, Nelson
openaire   +2 more sources

The influence of cyanide on pyrite flotation from gold leach residues with sodium isobutyl xanthate

International Journal of Mineral Processing, 1997
Abstract Impedance measurements, linear voltammetry, and flotation tests were carried out to determine the influence of NaCN on the flotation of pyrite from gold leach residues. The mixed potential of the pyrite electrode was found to decrease in the presence of NaCN.
J.R. de Wet, P.C. Pistorius, R.F. Sandenbergh   +2 more
openaire   +1 more source

Recovery of Iron from Cyanide Residues by Carbothermic Reduction-Magnetic Separation

Applied Mechanics and Materials, 2014
A craft of carbothermic reduction-magnetic separation process is investigated for the recovery of iron from cyanide residues, a hazardous industrial wastes when produce gold with cyanide leaching method. The cyanide residues, containing 30.12% Fe was conducted for the craft.
openaire   +1 more source

Understanding Cyanidation of Silver from Batch and Continuous Medium Temperature Pressure Oxidation Generated Residues

2018
Pressure oxidative treatment of whole ores and/or mineral concentrates is used to leach or liberate metals of value for downstream recovery. Silver, when present, is often lost in processing, precipitating as a cyanide-insoluble jarosite in the residue.
R. T. Seaman, K. Mayhew
openaire   +1 more source

Speciation and evolution of cyanide compounds in coal pyrolysis residues

2002
Les usines à gaz produisaient des résidus cyanurés (matières épurantes). Afin d'estimer leur impact sur l'environnement, une méthodologie combinant à la fois l'analyse directe sur solides et des filtrats d'extractions aqueuses à différents pH a été développée.
openaire   +1 more source

Recycling of Residual Valuable Metals in Cyanide-Leached Gold Wastewater Using the N263-TBP System

Journal of Environmental Chemical Engineering, 2021
Yonghui Song, He Xihong
exaly  

Application of the Anion-Exchange Resin as a Complementary Technique to Remove Residual Cyanide Complexes in Industrial Plating Wastewater After Conventional Treatment

Environmental Science and Pollution Research, 2020
Jae-Hun Chu, Jin-Kyu Kang, Seong-Jik Park   +2 more
exaly  

A gas chromatographic method for determining residues of sodium cyanide in vegetation and soil

Bulletin of Environmental Contamination and Toxicology, 1979
I, Okuno, J A, Whitehead, W H, Higgins, P J, Savarie   +3 more
openaire   +2 more sources

Interaction mechanism of cyanide with pyrite during the cyanidation of pyrite and the decyanation of pyrite cyanide residues by chemical oxidation

International Journal of Minerals, Metallurgy and Materials
Wenwen Han, Hongying Yang, Linlin Tong
openaire   +1 more source