Sodium Benzoate and Urea as Promoters in Sillimanite Flotation

Autori

  • Mihir D.M. Process Department, JP Mukherji and Associates Pvt. Ltd., Pune, Maharashtra, India
  • Rama Rao V.V Head Research and Development Department, Trimex Sands Pvt.Ltd, Srikakulam, Andhra Pradesh
  • Padmasree R. Department of Chemical Engineering, Andhra University College of Engineering (A), Visakhapatnam, Andhra University, India

Parole chiave:

Sillimanite, froth flotation, hydrotropes, sodium benzoate, urea

Abstract

Sillimanite is an alumino-silicate mineral with the chemical formula Al2SiO5. Sillimanite in general is concentrated by gravity separation methods followed by froth flotation. Hydrophobicity is induced to sillimanite surface by adsorbing surfactant (oleic acid/oleate) molecules selectively and the mineral is collected into froth as concentrate. Other reagents used are; sodium silicate to depress garnet and silica and sodium hydroxide to adjust the pulp pH. In the present study, hydrotropes (sodium benzoate and urea) were introduced to improve the solubility of oleic acid in aqueous phase that is flotation pulp. It is noted that hydrotropes improve the recovery of sillimanite with marketable grades of concentrateCite this Article Mihir DM, Rama Rao VV, Padmasree R. Sodium Benzoate and Urea as Promoters in Sillimanite Flotation. Journal of Modern Chemistry & Chemical Technology. 2016; 7(3): 

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Pubblicato

2016-10-20

Fascicolo

V. 7 N. 3 (2016)

Sezione

Research Articles

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