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Flotation Reagents

Froth flotation is a process for separating minerals from gangue by taking advantage of differences in their hydrophobicity. Hydrophobicity differences between valuable minerals and waste gangue are increased through the use of surfactants and wetting agents. The selective separation of the minerals makes processing complex ores economically feasible. The flotation process is used for the separation of a large range of sulfides, carbonates and oxides prior to further refinement. Phosphates and coal are also upgraded by flotation technology.There are three principal types of flotation reagents: collectors, regulating agents, and frothing agents.
Chemicals of collectors
Collectors either chemically bond  on a hydrophobic mineral surface, or adsorb onto the surface in the case of, for example, coal flotation through physisorption. Collectors increase the natural hydrophobicity of the surface, increasing the separability of the hydrophobic and hydrophilic particles.
Xanthate Flotation

 Sodium Ethyl Xanthate

 Potassium Ethyl Xanthate

 Sodium Isobutyl Xanthate

 Potassium Isobutyl Xanthate

 Sodium Butyl Xanthate

 Potassium Butyl Xanthate

 Sodium Amyl Xanthate

 Potassium Amyl Xanthate

 Sodium Isopropyl Xanthate

 Potassium Isopropyl Xanthate

Dithiophosphates Flotation

 Dithiophosphate 25

 Dithiophosphate 25S

 Dithiophosphate BA

 Dithiophosphate BS

 Dithiophosphate IBS

 Amino-Dithiophosphate

 Dithiocarbamate ES

 Sodium Diethyl Dithiophosphate

 Sodium Diisoamyl Dithiophosphate

 Dianiline Dithiophosphoric Acid

Dithiocarbamates Flotation

 Ethyl Thiocarbamate

 Isopropyl Eithyl Thionocarbamate