I. collectorless flotation, XPS and dissolution study. Int J Miner Process. 1997;50(1–2):1. Google Scholar [21] Fornasiero D, Ralston J. Effect of surface oxide/hydroxide products on the collectorless flotation of copper-activated sphalerite. Int J Miner Process. 2006;78(4):231. Article Google Scholar [22]
Collectorless flotation of different size fractions of sulphides and sulphur was conducted in a monobubble-type Hallimond tube. Flotation tests were carried out with sulphides of different origins ...
Flotation Collectors. Simply said; a Flotation Collectors is a chemical used to make the surface of minerals, which is metallic, hydrophobic or in layman's term 'afraid of water' or 'water hating' as others like to say. This chemical used will behaved, in a way, as a wax would when you applied it to your car. After wax (or hydrophobic ...
Collectorless flotation of different size fractions of sulphides and sulphur was conducted in a monobubble-type Hallimond tube. Flotation tests were carried out with sulphides of different origins ...
Collectorless flotation can be used in very practical way in mineral processing plants especially in high grade units such as cleaners which are used to increase minerals' grade. By collectorless flotation, one could increase grade of final products, decrease the amount of chemical material consumption, decrease flotation equipment, etc.
Several flotation plants in the world use process water with high salt content. Meanwhile, the use of process and saline waters in coal flotation has also attracted great interest for many years as the process water can be re-used and the accumulated salt ions available in water can enhance coal flotation. Since the researchers (Majer et
Due to its natural hydrophobicity, the rejection of talc in the flotation process is challenging. In the collectorless flotation of talc, MIBC has shown to be the most suitable frother that can be used since it had the least frother adsorption capacity and could obtain high recovery. Typical talc depressants are CMC, guar gum, dextrin, etc.
Collectorless flotation of galena can be done with a moderate oxidizing potential. For this the hydrophobic part of galena surface might be elemental sulfur or lead polysulfide.[8] H ... For the flotation process to occur, the froth should be present in an ample quantity so that it persists till the
The collectorless flotation of chalcopyrite requires that the flotation occurs in a neutral or slightly oxidising environment. Previous studies have shown that freshly fractured flotation of chalcopyrite increased when the redox potential (Eh) was in the neutral or slightly oxidising region. ... The flotation process also requires that the ...
Flotation Environment The obvious conclusion from the tests with ores is that, although there is substantial and incontrovertible evidence for collectorless flotation of sulphides, this has almost always required a closely controlled environment.
The collectorless flotation process offers an opportunity to decrease production costs and negative impacts of conventional industrial activities on the surrounding environment. Table 2 presents a brief comparison of reagent regimes between the traditional and modified flotation processes. In general, the conventional flotation process applied ...
A study on collectorless flotation of lead and zinc sulphide present in the Derekoy ore in the presence of sodium sulphide was performed. The parameters of the process and influence of sodium ...
5. Summary and conclusions. It was found that ultrasonic treatment has a favorable effect on the collectorless flotation of oxidized pyrite, resulting in 50% flotation recovery at pH 3 after 60 min of sonication. However, flotation recovery decreased (40%) after 90 min of sonication.
Batch flotation tests indicate that the collectorless flotation of Mo−Bi sulfide ore resulted in lower flotation kinetics but higher selectivity than those of the collector flotation process. Industrial-scale tests illustrate that introducing collectorless flotation into the sequential flotation in industrial production was a …
