By Man.) International Symposium on Gold Metallurgy (1987 Winnipeg, R. S. Salter, D. M. Wyslouzil, G. W. McDonald
Describes present advances in metallurgical procedures utilized to gold extraction
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Additional info for Proceedings of the Metallurgical Society of the Canadian Institute of Mining and Metallurgy
Example text
Table No. 3 gives a summary of the extraction data. TABLE 3 - Leach ExtractiQH Pata Period Head Assay A u . 13 Reagent consumption. 08 kg/tonne respectively. Carbon-ln-PulD Process description. P. adsorption contactors. T h e chip screen has three panels of 24 mesh screen cloth and originally discharged the chips by gravity to the tailings agitators. The adsorption circuit is comprised of six contactors, airlifts and corresponding Derrick vibrating screens. Each contactor is 5 m dia. 8') high providing a slurry retention time of about an hour.
9 tonnes in May 1984. 4 mg/L to approximately 100 mg/L. Weighted averages (to actual operating hours) for the period November 1983 to July 1984 indicated that the C N j and copper levels in untreated C I P tailings were 336 mg/L and 199 mg/L respectively. 1% for copper. 07/tonne milled. Because of high cost and treatment inefficiency alkaline chloriantion was abandoned in favour of natural degradation on July 11, 1984. T o study the natural degradation capabilities of the tailings pond, zero discharge conditions were maintained from July 11 to November 22, 1984.
The Main Zone where most of the ore reserves are located, is hosted in a cherty iron sulphide formation at the interface between basaltic and ultramafic rocks. Gold is also found associated with sulphide mineralization in the ultramafic rocks and with quartz veining in the basaltic rocks. Process selection. The dense, competent nature of the gold bearing ore was found to be compatible to semi-autogenous grinding. Due to the location of the minesite the most economical method of gold recovery was investigated and found to be gold cyanidation followed by Carbon-in-Pulp technology.
