brief expanation of froth floatation process
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The principle of this method is the differential wetting of components of a mixture by water. It is used to separate metal ore from mud and other impurities in the case of ores lighter than the gangue or impurities. For example, sulphide ores such as galena ( ore of lead ) and zinc blende (ore of zinc).
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Froth flotation is a process for selectively separating 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. It has been described as "the single most important operation used for the recovery and upgrading of sulfide ores".[1] The development of froth flotation has improved the recovery of valuable minerals, such as copper- and lead-bearing minerals. Along with mechanized mining, it has allowed the economic recovery of valuable metals from much lower grade ore than previously.
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