Flotation of Gold and GoldBearing Ores ResearchGate
Flotation circuits in commercial gold concentrators are described, along with modern plant practice for various ore types, including refractory gold, arsenopyrite, pyrrhotite, pyrite, telluride
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Flotation circuits in commercial gold concentrators are described, along with modern plant practice for various ore types, including refractory gold, arsenopyrite, pyrrhotite, pyrite, telluride
refractory gold ore flotation HFC Refrigerants (55) HST Hydraulic Cone CrusherHST series hydraulic cone crusher is combined with technology such as machinery, hydraulic pressure, electricity, automation, intelligent control, etc., representing the most advanced crusher technology in the world.
The present invention is directed to flotation of refractory gold sulfide ores in which the ore is ground, floated, the tailings reground, and refloated to produce goldbearing concentrates.
Referring to FIG. 1, goldcontaining refractory raw material comprising 1) a first type of refractory sulfidic mineral having high gold content reactive refractory sulfidic mineral and 2) a second type of refractory sulfidic mineral having low gold content nonreactive refractory sulfidic mineral, typically provided as ground ore, is mixed with water to form a mineral pulp 1.
The present invention is directed to flotation of refractory gold sulfide ores in which the ore is ground, floated, the tailings reground, and refloated to produce goldbearing concentrates.
Flotation test work was conducted on both samples and the optimum conditions presented in Table 2. For the low throughput Ore A flotation test work indicated that the majority of gold can be concentrated by concentrating the sulphide component in the ore to mass pulls of 9 to 10 wt%, with gold
#0183;#32;First, refractory gold ore is ground as finely as possible usually so the individual grains are much less that 100 micrometers. The ground up ore is mixed with water to create a slurry, which is mixed with surfactants to increase the golds hydrophobicity. This mixture is placed into a tank or flotation cell filled with distilled water
#0183;#32;This suggests that the primary ore, as a whole, is highly refractory in nature and will therefore have to be processed using an appropriate refractory method. Often, the gold bearing ores are refractory due to the gold grains and concentration by flotation is necessary, either followed by roasting, bacterial leaching, or pressure leaching in a way that the gold is liberated prior to cyanidation .
Metallurgical ContentGold Leaching amp; Processing of Arsenic OreMispickel (Arsenopyrite: FeAsS).6Leaching and Recovering Gold from Antimony MineralsStibnite (Antimony Sulphide, Sb2S2)Telluride Gold Ore ProcessingSolubility of TelluridesGold Extraction from Carbonaceous OreList Gold Refractory Process Methods Where gold is associated with arsenic, antimony, tellurium, and
Effect of Clay Rheology on Flotation of a Refractory Gold Ore, in Proceedings 13th AusIMM Mill Operators Conference 2016, pp 7784 (The Australasian Institute of Mining and Metallurgy: Melbourne). Related products. CollectionMember DiscountPDF. Iron Ore 2017 Member DiscountPDF. Minesafe International 2017 Conference
A high carbon lowgrade gold ore, in which gold mainly occurs in carbonaceous matters, is a typical refractory gold ore whose conventional cyanide leaching extraction is only %.
Refractory Gold Ore Treatment Methods. At the plant of the Consolidated Murchison Co. in the Transvaal, South Africa, where a refractory highantimony gold ore is being treated, flotation and cyanidation of the flotation concentrates and tailings are being practiced.
The common gold extraction processes include gravity separation process, froth flotation process, cyanidation, etc. Froth flotation process is the most widely used in gold extraction, but for different types of gold, we can choose flotation process combined process in
Problem with gold recovery from sulphide ore: How may a mill get the maximum recovery of gold from a sulphide ore, at the least capital cost and at the same time obtain the highest net return. This latter point is most important. In many cases a gold mill using an allcyanide flowsheet with fine grinding of all the ore will report very low gold content in the tailings particularly on an
2 17. Flotation of Gold Ores. also for beneficiation and separation of difficulttotreat (refractory) gold ores. Flotation is also the best method for recovery of gold from base metal ores and goldcontaining PGM ores. Excluding gravity preconcentration, flotation remains the most costeffective bene#173; ficiation method.
Gold ores are considered refractory if gold extractions from a conventional cyanidation process are less than 80% even after fine grinding. 1) Arsenicbearing refractory gold ore has stones extremely difficult to deal with. In the stones, gold is locked up in arsenic mineral matrix as the form of microscopic or submicroscopic lattice.
#0183;#32;This suggests that the primary ore, as a whole, is highly refractory in nature and will therefore have to be processed using an appropriate refractory method. Often, the gold bearing ores are refractory due to the gold grains and concentration by flotation is necessary, either followed by roasting, bacterial leaching, or pressure leaching in a way that the gold is liberated prior to cyanidation.
#0183;#32;Flotation circuits in commercial gold concentrators are described, along with modern plant practice for various ore types, including refractory gold, arsenopyrite, pyrrhotite, pyrite, telluride
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