metal ores, the gold is floated from the base metal tailings. The flotation of gold bearing ores is classified according to ore type , because the flotation methods used for the recovery of gold from different ores is vastly different. 17.2 GEOLOGY AND GENERAL MINERALOGY OF GOLD BEARING ORES
The ores from which silver and gold are recoverable by flotation divide themselves naturally into two general processing classes: ores in which the valuable minerals are those of the base metals, the precious metals being incidental constituents, and ores in which the gold and silver are of primary importance, the base metal minerals, if present, being of little or no value. The first
the gravimetric process. flotation was selected for further investigation. the feed for the flotation tests was the tailings from a production gravimetric process, in this case a falcon. these tailings are composed of alluvial sand, with particle size varying between less than 0.15 mm and greater than 2.00 mm .
Metallurgical ContentGOLD FLOTATIONGOLD FLOTATION MACHINES Calculating Flotation cell RequirementsGOLD FLOTATION REAGENTSREAGENTS USED IN FLOTATION OF GOLD ORESFrothers and Froth ModifiersREAGENTS FOR SILVER ORE FLOTATIONPRECIPITATING EFFECT OF FLOTATION REAGENTSPRIMARY SLIMEGOLD FLOTATION FLOWSHEETFlotation Unit in the Grinding CircuitFlotation of Cyanide Residues Though the gold
pyd 1750 ore dressing flotationing flotation cell. Flotation ore dressing Britannica. Flotation is widely used to concentrate copper, lead, and zinc minerals, which commonly accompany one another in their ores. Many complex ore mixtures formerly of little value have become major sources of certain metals by means of the flotation process.
Jul 23, 2014· 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.
as pyrites. In a typical pyrytic gold ore, the gold is encapsulated within an iron sulfide crystal structure. Highly oxidized ores generally do not respond well to flotation. Advantages of the flotation process are that gold values are generally liberated at a fairly coarse particle size which means that ore grinding costs are minimized.
Jul 01, 1994· The flotation of gold bearing ores a review 84.5 Residence Time Because flotation is often a rate controlled process it is important to optimize the cell residence time. It has been reported that the rate of gold and pyrite flotation is greater from plants treating coarse milled ores than from those treating finer ores or tailings.Cited by: 68
Native gold and electrum are naturally occurring alloys containing gold and silver and a little copper. They are the most common and important forms of gold in ores. Their recovery by gravity concentration, cyanidation, or flotation from ores, typically containing 0.120 g/t Au is of great commercial importance.