Adsorption phenomena in hydrometallurgy, 2. Electrophoretic behavior of oxides in aqueous ammoniacal solutions of copper, nickel and cobalt

Kwadwo Asare Osseo-Asare, D. W. Fuerstenau

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The electrophoretic mobilities of finely divided oxides in aqueous ammoniacal solutions of copper, nickel, and cobalt have been measured. The solids used were rutile, alumina, quartz, and hematite. The effects of pH, ammonia-ammonium concentration, and metal-ion concentration on the electrophoretic behavior were investigated. The experimental results indicate that oxide colloids may undergo as may as five charge reversals in aqueous ammoniacal solutions of hydrolyzable ammine-forming metal ions.

Original languageEnglish (US)
Pages (from-to)117-127
Number of pages11
JournalInternational Journal of Mineral Processing
Volume7
Issue number2
DOIs
StatePublished - Jan 1 1980

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Hydrometallurgy
Cobalt
Nickel
cobalt
Oxides
Metal ions
Copper
nickel
aqueous solution
oxide
copper
adsorption
Adsorption
Electrophoretic mobility
Quartz
ion
Aluminum Oxide
metal
Hematite
Colloids

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geochemistry and Petrology

Cite this

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AB - The electrophoretic mobilities of finely divided oxides in aqueous ammoniacal solutions of copper, nickel, and cobalt have been measured. The solids used were rutile, alumina, quartz, and hematite. The effects of pH, ammonia-ammonium concentration, and metal-ion concentration on the electrophoretic behavior were investigated. The experimental results indicate that oxide colloids may undergo as may as five charge reversals in aqueous ammoniacal solutions of hydrolyzable ammine-forming metal ions.

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