Calculations of thermodynamic equilibria in the lead sulfide surface - thiol collector systems: Part II. Diethyl dithiophosphate ion as the collector

Jussi Rastas, Jaakko Leppinen, Pekka Sten

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The chemisorption of diethyl dithiophosphate ion on lead sulfide surface is examined by means of thermodynamic calculations, with particular attention to the surface behavior. Balance equations are written in terms of equilibrium constants and solved to determine the surface coverage and the concentrations of various species under different conditions. The calculations cover various ways of regulating the chemisorption, such as the addition of oxygen, sodium sulfide, or sulfuric acid, the evaporation of hydrogen sulfide, and change in the initial concentration of the collector. Special attention is paid to the precipitation of lead sulfate, which limits the stability region of the dithiophosphate surface species. The results are compared with those for ethyl xanthate presented in part I of this study.
Original languageEnglish
Pages (from-to)257-262
JournalCanadian Metallurgical Quarterly
Volume29
Issue number4
DOIs
Publication statusPublished - 1990
MoE publication typeA1 Journal article-refereed

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Sulfhydryl Compounds
Lead
Thermodynamics
Ions
Chemisorption
Hydrogen Sulfide
Equilibrium constants
Hydrogen sulfide
Sulfuric acid
Evaporation
Sodium
Oxygen
Sulfides
lead sulfide

Cite this

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title = "Calculations of thermodynamic equilibria in the lead sulfide surface - thiol collector systems: Part II. Diethyl dithiophosphate ion as the collector",
abstract = "The chemisorption of diethyl dithiophosphate ion on lead sulfide surface is examined by means of thermodynamic calculations, with particular attention to the surface behavior. Balance equations are written in terms of equilibrium constants and solved to determine the surface coverage and the concentrations of various species under different conditions. The calculations cover various ways of regulating the chemisorption, such as the addition of oxygen, sodium sulfide, or sulfuric acid, the evaporation of hydrogen sulfide, and change in the initial concentration of the collector. Special attention is paid to the precipitation of lead sulfate, which limits the stability region of the dithiophosphate surface species. The results are compared with those for ethyl xanthate presented in part I of this study.",
author = "Jussi Rastas and Jaakko Leppinen and Pekka Sten",
year = "1990",
doi = "10.1179/cmq.1990.29.4.257",
language = "English",
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pages = "257--262",
journal = "Canadian Metallurgical Quarterly",
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Calculations of thermodynamic equilibria in the lead sulfide surface - thiol collector systems : Part II. Diethyl dithiophosphate ion as the collector. / Rastas, Jussi; Leppinen, Jaakko; Sten, Pekka.

In: Canadian Metallurgical Quarterly, Vol. 29, No. 4, 1990, p. 257-262.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Calculations of thermodynamic equilibria in the lead sulfide surface - thiol collector systems

T2 - Part II. Diethyl dithiophosphate ion as the collector

AU - Rastas, Jussi

AU - Leppinen, Jaakko

AU - Sten, Pekka

PY - 1990

Y1 - 1990

N2 - The chemisorption of diethyl dithiophosphate ion on lead sulfide surface is examined by means of thermodynamic calculations, with particular attention to the surface behavior. Balance equations are written in terms of equilibrium constants and solved to determine the surface coverage and the concentrations of various species under different conditions. The calculations cover various ways of regulating the chemisorption, such as the addition of oxygen, sodium sulfide, or sulfuric acid, the evaporation of hydrogen sulfide, and change in the initial concentration of the collector. Special attention is paid to the precipitation of lead sulfate, which limits the stability region of the dithiophosphate surface species. The results are compared with those for ethyl xanthate presented in part I of this study.

AB - The chemisorption of diethyl dithiophosphate ion on lead sulfide surface is examined by means of thermodynamic calculations, with particular attention to the surface behavior. Balance equations are written in terms of equilibrium constants and solved to determine the surface coverage and the concentrations of various species under different conditions. The calculations cover various ways of regulating the chemisorption, such as the addition of oxygen, sodium sulfide, or sulfuric acid, the evaporation of hydrogen sulfide, and change in the initial concentration of the collector. Special attention is paid to the precipitation of lead sulfate, which limits the stability region of the dithiophosphate surface species. The results are compared with those for ethyl xanthate presented in part I of this study.

U2 - 10.1179/cmq.1990.29.4.257

DO - 10.1179/cmq.1990.29.4.257

M3 - Article

VL - 29

SP - 257

EP - 262

JO - Canadian Metallurgical Quarterly

JF - Canadian Metallurgical Quarterly

SN - 0008-4433

IS - 4

ER -