water Pollution and Control: Forth Flotation

 Forth Floatation:

Froth flotation is a water treatment process that uses air bubbles to separate valuable materials from unwanted materials. 

 

Construction

·         A flotation cell, tank, or column is used to perform the process. 

·         The cell may contain components like rotors, dispersers, and draft tubes. 

 

Working

1.      Finely ground ore particles are suspended in water. 

2.      A reagent is added to the water to make the desired mineral particles hydrophobic. 

3.      Air is blown into the mixture to create air bubbles. 

4.      The hydrophobic mineral particles stick to the air bubbles and rise to the surface. 

5.      The unwanted materials, called gangue, sink to the bottom of the tank. 

6.      The mineral particles are collected by skimming the froth that forms on the surface. 

 

Chemicals

·         Frothers: These chemicals, like pine oil and camphor oil, help form the froth. 

·         Surfactants and wetting agents: These chemicals increase the hydrophobicity differences between the valuable minerals and the gangue. 


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