FTIR investigation of the reactions of ethyl xanthate with non-activated and activated sulfide minerals

Jaakko Leppinen

Research output: Book/ReportReport

Abstract

FTIR spectroscopy employing the ATR technique has been used to investigate the reactions of aqueous potassium ethyl xanthate with copper(II)- activated and non activated pyrite, pyrrhotite, chalcopyrite and sphalerite. The spectroscopic data are compared to microflotation results with special emphasis on solution pH. FTIR spectroscopy reveals that diethyl dixanthogen is formed on pyrite, pyrrhotite, and chalcopyrite. A monolayer of iron ethyl xanthate co-exists with dixanthogen on the surface of pyrite and a copper xanthate compound on the surface of chalcopy rite. Activation with Cu(II) ions leads to a copper(I) ethyl xanthate-like compound on all the minerals studied. The reaction of ethyl xanthate with non-activated sulfide minerals is favored by low pH, while neutral pH favors the reaction with activated minerals.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages40
ISBN (Print)951-38-3608-8
Publication statusPublished - 1989
MoE publication typeD4 Published development or research report or study

Publication series

SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
Number667
ISSN0358-5077

Fingerprint

Sulfide minerals
Minerals
Copper
Spectroscopy
Copper compounds
Monolayers
Potassium
Iron
Chemical activation
Ions
pyrite
chalcopyrite
dixanthogen

Keywords

  • FTIR spectroscopy
  • ATR technique
  • investigation
  • reaction kinetics
  • pyrhotite
  • pyrite
  • sphalerite
  • xanthates
  • sulfide minerals
  • comparison

Cite this

Leppinen, J. (1989). FTIR investigation of the reactions of ethyl xanthate with non-activated and activated sulfide minerals. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 667
Leppinen, Jaakko. / FTIR investigation of the reactions of ethyl xanthate with non-activated and activated sulfide minerals. Espoo : VTT Technical Research Centre of Finland, 1989. 40 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 667).
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abstract = "FTIR spectroscopy employing the ATR technique has been used to investigate the reactions of aqueous potassium ethyl xanthate with copper(II)- activated and non activated pyrite, pyrrhotite, chalcopyrite and sphalerite. The spectroscopic data are compared to microflotation results with special emphasis on solution pH. FTIR spectroscopy reveals that diethyl dixanthogen is formed on pyrite, pyrrhotite, and chalcopyrite. A monolayer of iron ethyl xanthate co-exists with dixanthogen on the surface of pyrite and a copper xanthate compound on the surface of chalcopy rite. Activation with Cu(II) ions leads to a copper(I) ethyl xanthate-like compound on all the minerals studied. The reaction of ethyl xanthate with non-activated sulfide minerals is favored by low pH, while neutral pH favors the reaction with activated minerals.",
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Leppinen, J 1989, FTIR investigation of the reactions of ethyl xanthate with non-activated and activated sulfide minerals. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 667, VTT Technical Research Centre of Finland, Espoo.

FTIR investigation of the reactions of ethyl xanthate with non-activated and activated sulfide minerals. / Leppinen, Jaakko.

Espoo : VTT Technical Research Centre of Finland, 1989. 40 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 667).

Research output: Book/ReportReport

TY - BOOK

T1 - FTIR investigation of the reactions of ethyl xanthate with non-activated and activated sulfide minerals

AU - Leppinen, Jaakko

PY - 1989

Y1 - 1989

N2 - FTIR spectroscopy employing the ATR technique has been used to investigate the reactions of aqueous potassium ethyl xanthate with copper(II)- activated and non activated pyrite, pyrrhotite, chalcopyrite and sphalerite. The spectroscopic data are compared to microflotation results with special emphasis on solution pH. FTIR spectroscopy reveals that diethyl dixanthogen is formed on pyrite, pyrrhotite, and chalcopyrite. A monolayer of iron ethyl xanthate co-exists with dixanthogen on the surface of pyrite and a copper xanthate compound on the surface of chalcopy rite. Activation with Cu(II) ions leads to a copper(I) ethyl xanthate-like compound on all the minerals studied. The reaction of ethyl xanthate with non-activated sulfide minerals is favored by low pH, while neutral pH favors the reaction with activated minerals.

AB - FTIR spectroscopy employing the ATR technique has been used to investigate the reactions of aqueous potassium ethyl xanthate with copper(II)- activated and non activated pyrite, pyrrhotite, chalcopyrite and sphalerite. The spectroscopic data are compared to microflotation results with special emphasis on solution pH. FTIR spectroscopy reveals that diethyl dixanthogen is formed on pyrite, pyrrhotite, and chalcopyrite. A monolayer of iron ethyl xanthate co-exists with dixanthogen on the surface of pyrite and a copper xanthate compound on the surface of chalcopy rite. Activation with Cu(II) ions leads to a copper(I) ethyl xanthate-like compound on all the minerals studied. The reaction of ethyl xanthate with non-activated sulfide minerals is favored by low pH, while neutral pH favors the reaction with activated minerals.

KW - FTIR spectroscopy

KW - ATR technique

KW - investigation

KW - reaction kinetics

KW - pyrhotite

KW - pyrite

KW - sphalerite

KW - xanthates

KW - sulfide minerals

KW - comparison

M3 - Report

SN - 951-38-3608-8

T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports

BT - FTIR investigation of the reactions of ethyl xanthate with non-activated and activated sulfide minerals

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Leppinen J. FTIR investigation of the reactions of ethyl xanthate with non-activated and activated sulfide minerals. Espoo: VTT Technical Research Centre of Finland, 1989. 40 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 667).