A very similar process known as " dissolved air flotation " is also used for waste water treatment . " Froth flotation " is commonly used in the processing of mineral ores.
42.
Supergene sulfide ores rich in native copper minerals are refractory to treatment with sulfuric acid leaching on all practicable time scales, and the dense metal particles do not react with froth flotation media.
43.
Froth flotation efficiency is determined by a series of probabilities : those of particle bubble contact, particle bubble attachment, transport between the pulp and the froth, and froth collection into the product launder.
44.
The operation will use a froth flotation process which involves crushing the ore then flooding the ore with water containing chemicals which combine with gold, float to the surface, and are skimmed off.
45.
The chemical washes coal in a process known as " froth flotation, " which involves the separation of sand-size particles of coal from the surrounding rock within a tank of water or other solution.
46.
In 1989 Hyde was posthumously inducted into the National Mining Hall of Fame and Museum in Leadville, Colorado, as a result of his installation of the first froth flotation process in the United States.
47.
Froth flotation has permitted the mining of low-grade and complex ores that otherwise would have been unprofitable, and thanks to James Hyde, many old " worthless " tailings dumps have been converted into profitable mines.
48.
Foam fractionation is closely related to the allied process of froth flotation in which hydrophobic particles attach to the surface of bubbles which rise to form a pneumatic ( i . e . rising ) foam.
49.
Froth flotation is usually applied when the gold present in an ore is closely associated with sulfide minerals such as pyrite, chalcopyrite or arsenopyrite, and when such sulfides are present in large quantities in the ore.
50.
In 1909, after Heinze abandoned his properties in Basin, the Butte and Superior Mining Company used buildings and machinery at the site of the Basin Reduction Works to treat zinc ore by a new process called froth flotation.
