Flotation Equipment is also called reverse settling, since sediment moves upward and thus against gravity. Rising gas bubbles adhere to solid particles, which make them lighter than the must and cause them to rise to the surface. A fining agent such as gelatine coats the foam particle and aids flock formation. With regard to apparatus requirements, a flotation tank is linked to a pressurisation pump, gas supply and dosage pump (for example gelatine addition). With a modified wine tank, clarified juice can be racked off from the racking valve and foam can be pumped away.

Descriptions of the use of a flotation process have been found in ancient Greek and Persian literature suggesting its antiquity.During the late nineteenth century, the process basics were discovered through a slow evolutionary phase; then, during the first decade of the twentieth century, a more rapid investigation of oils, froths, and agitation led to proven work-place applications, especially at Broken Hill, Australia, that brought the technological innovation known as “froth flotation.” During the early twentieth century, it truly and dramatically revolutionized-an overworked term, but accurate here-mineral processing around the globe.

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