Reagents for Adsorptive Bubble Separation

Promoters or collectors provide the substances to be separated with a water-repellent air-avid coating that will adhere to air bubbles. Typical collectors for flotation of metallic sulfides and native metals are dithiophosphates and xanthates. Fatty acids and their soaps, petroleum sulfonates, and sulfonated fatty acids are widely used as collectors in flotation of fluorspar, iron ore, phosphate rock, and others. Fuel oil and kerosene are used as collectors for coal, graphite, sulfur, and molybdenite. Cationic collectors such as fatty amines and amine salts are widely used for separation of quartz, potash, and silicate minerals. 

Pine oil, cresylic acid, aliphatic alcohols, and polypropylene glycol ether are commonly used as the frothers.  

Bubble separation modifiers include several classes of chemicals described below activators, alkalinity regulators, depressants, deflocculants, and defoaming agents. 

A defoaming agent is a formulation of surface-active materials used at low concentrations to prevent the formation of unwanted foam or to destroy foam which has formed. 

Any chemicals or substances which can be dosed to increase the efficiency of a flotation cell is termed the flotation aid.  

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Foam Separation by Dispersed Air Flotation Cell Chemical Reagents for Adsorptive Bubble Separation Laboratory Foam Separation Tests Engineering Applications... 

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