What is froth flotation?
: flotation in which air bubbles are introduced into a mixture of finely divided ore or other material with water and a chemical that aids attachment of the bubbles to the particles of the desired material and its recovery as a froth.
What is the meaning of froth in chemistry?
noun. (Chemical Engineering: General) A froth is a suspension of a gas in a liquid. Minerals that are hydrophobic become attached to the air bubble and float to the surface of the slurry to form a froth, where they can be removed.
What is froth flotation process Class 10?
Answer: The Froth Floatation method is a method used for the concentration of metal ores. It is used for the concentration of sulphide ores. The ore particles become wet by oil while the gangue particles become wet by water. Air is blown in through a pipe and a rotating paddle agitates this mixture.
What is the basis of froth flotation process?
1.2 Hydrophobicity/hydrophilicity The basis of froth flotation is the difference in wettabilities of different minerals. Particles range from those that are easily wettable by water (hydrophilic) to those that are water-repellent (hydrophobic).
Where is froth flotation used?
Froth flotation is a process for selectively separating of hydrophobic materials from hydrophilic. This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.
What is a floatation?
Floatation, also known as sensory deprivation, is simply the act of relaxing in a floatation tank; with all sights and sounds removed, and drifting into a meditative state that rejuvenates your mind and body. A Tank of Many Names.
What is a flotation mill?
flotation, in mineral processing, method used to separate and concentrate ores by altering their surfaces to a hydrophobic or hydrophilic condition—that is, the surfaces are either repelled or attracted by water. Flotation has now become the most widely used process for extracting many minerals from their ores.
What is froth flotation 12?
Principle: The principle of froth floatation is that sulphide ores are preferentially wetted by pine oil, whereas the gangue particles are wetted by water. Collectors are added to enhance the non-wettability of the mineral particles. Example: For an ore containing ZnS and PbS, the depressant used is NaCN.
What is froth flotation process Class 8?
In ore/mineral beneficiation, froth flotation is a method by which commercially important minerals are separated from impurities and other minerals by collecting them on the surface of a froth layer.
What are the main parameters of froth flotation?
It is therefore pertinent to take into consideration these parameters during froth flotation operations. Such parameters include feed rate, pH, collector type, and particle size; which automatically cause changes in other parts of the system such as percent recovery, flotation rate, and pulp density [15].
What is the purpose of flotation?
flotation, in mineral processing, method used to separate and concentrate ores by altering their surfaces to a hydrophobic or hydrophilic condition—that is, the surfaces are either repelled or attracted by water.
Which is the best definition of froth flotation?
Definition of froth flotation. : flotation in which air bubbles are introduced into a mixture of finely divided ore or other material with water and a chemical that aids attachment of the bubbles to the particles of the desired material and its recovery as a froth.
How is froth floatation used in mineral extraction?
This method of froth floatation is a method of mineral processing in which different minerals are separated selectively. Such ores containing multiple metals such as lead, copper and zinc can be selectively extracted by using froth floatation.
How is Sulphide ore separated by froth flotation?
Thus the sulphide ore comes on the top with the froth and oil. The remaining gangue particles which did not dissolve in oil settle down. The foam is removed and taken for further processing. Thus the minerals are separated by the froth -flotation process.
How is froth flotation used to concentrate copper?
Froth flotation cells to concentrate copper and nickel sulfide minerals, Falconbridge, Ontario. Froth flotation is a process for separating minerals from gangue by taking advantage of differences in their hydrophobicity.