For the removal of carbonate gangues, a high separation efficiency can be achieved using reverse anionic flotation at around pH 4.5 without the addition of a phosphate depressant 7 . Figure 1. The reverse Crago double float process for beneficiation of Florida phosphate ore 6 .
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Among the flotation reagents, commonly used activators for flotation are sulfuric acid, sulfurous acid, sodium sulfide, copper sulfate and so on. Inhibitors: It is a kind of reagents mainly used to increase the hydrophilicity of minerals and to form a hydrophilic film on the surface of the ore particles in flotation process. At the same time, it inhibits the action of the collector on the mineral and reduces the floatability of the mineral.
Used as the flotation collector for non ferrous metal complex sulphide ore with medium selectivity and strong flotation ability, which is suitable for polymetalic sulphide ore consisting copper, lead zinc and so on. In the natural loop, it is particularly effective in the flotation for various copper and pyrite. Online Service.
The amounts and combination of these reagents varies depending upon the character and grade of ore but for average conditions reagent costs are about 75 cents per ton of ore treated. The big reagent item is the hydrofluoric acid which must be used to depress the silica and make it possible to float the feldspar with one of the amine salts at a pH of 2.5 3.0.
An improved process for separating feldspars from feldspathic ores by means of froth flotation wherein a combination of a higher aliphatic amine salt and a higher aliphatic or aromatic sulfonate is...
1 Froth Flotation Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air bubbles are then carried to the surface and
Cationic reagent for flotation of non metallics such as feldspar, potash and phosphate. Alamac ...
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Froth flotation is considered as the most effective process for the beneficiation of the sedimentary phosphate ore, due to the high efficiency of removing silicate and carbonate gangue minerals 4, 5 .
June 10, 2020
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