Flotation of kaolinite and diaspore with hexadecyl dimethyl benzyl ammonium chloride

  • Yue-hua Hu (胡岳华)Email author
  • Kui Ouyang (欧阳魁)
  • Xue-feng Cao (曹学锋)
  • Li-min Zhang (张丽敏)


Tertiary amine was synthesized from fatty amine and formaldehyde. And then the synthesized tertiary amine was used to react with benzyl chloride to synthesize hexadecyl dimethyl benzyl ammonium chloride (1627) at ambient pressure. Using the synthesized 1627 as collector, the flotation properties of diaspore and kaolinite were investigated by single mineral and mixed mineral test. The flotation mechanism of diaspore, kaolinite and 1627 was discussed based on FTIR spectra. The results show that the mass ratio of aluminum to silicate achieves 15.02 and the recovery of alumina in concentrate is 43.07% using 1627 as a collector. The 1627 is found to be a more effective and a promising collector for reverse flotation to remove aluminum-silicate minerals from bauxite.

Key words

kaolinite diaspore hexadecyl dimethyl benzyl ammonium chloride dodecyl amine reverse floatation infra-red spectrum 


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Copyright information

© Central South University Press and Springer-Verlag GmbH 2008

Authors and Affiliations

  • Yue-hua Hu (胡岳华)
    • 1
    Email author
  • Kui Ouyang (欧阳魁)
    • 1
  • Xue-feng Cao (曹学锋)
    • 1
  • Li-min Zhang (张丽敏)
    • 1
  1. 1.School of Resources Processing and BioengineeringCentral South UniversityChangshaChina

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