FTIR and flotation investigation of adsorption of diethyl dithiophosphate on sulfide minerals

Jaakko Leppinen

Research output: Book/ReportReport

Abstract

The interaction between aqueous sodium diethyl dithiophosphate and the sulfide minerals pyrite, pyrrhotite, chalcopyrite and sphalerite has been studied using FTIR spectroscopy and microflotation. The effect of pH, collector concentration and copper sulfate addition was examined. Iron-DTP surface compounds were formed on non-activated pyrite and pyrrhotite and copper-DTP was found on chalcopyrite. Copper-DTP was the surface product on the activated sulfide minerals. Adsorption of DTP on non-activated minerals was strongest at low pH, whereas activation lead to strong adsorption at neutral pH, too. The microflotation data agreed well with the adsorption data.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages23
ISBN (Print)951-38-3844-7
Publication statusPublished - 1991
MoE publication typeD4 Published development or research report or study

Publication series

SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
Number726
ISSN0358-5077

Keywords

  • flotation
  • activation
  • flotation reagents
  • sulfide minerals
  • pyrite
  • adsorption
  • surface chemistry
  • pyrrhotite
  • chalcopyrite
  • sphalerite
  • copper sulfates
  • concentration
  • (composition)
  • pH
  • spectroscopy

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  • Cite this

    Leppinen, J. (1991). FTIR and flotation investigation of adsorption of diethyl dithiophosphate on sulfide minerals. VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 726