Activity coefficient of manganese in copper

Sung Mo Jung; Chang Hee Rhee; Dong Joon Min

doi:10.2355/isijinternational.47.1699

Activity coefficient of manganese in copper

Sung Mo Jung, Chang Hee Rhee, Dong Joon Min

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

A slag/metal equilibrium experiment was conducted to derive an equation that correlates the activity coefficient of manganese (Mn) in copper (Cu) to temperature in the process of determining the activity of MnO in slags. The activity of Mn in liquid Cu was measured by equilibrating the Cu with a solid MnO pellet using an Al₂O₃ crucible in CO-CO₂ gas mixture. The activity coefficient of Mn in Cu with respect to liquid Mn was calculated by analyzing Mn in Cu. The metallic Cu separated from a MnO pallet was supplied for the chemical analysis of the Mn by atomic absorption spectroscopy. The linear relationship between the activity and concentration of Mn in Cu was obtained in temperature range from 1623 to 1773K. Experimental investigation showed that the activity coefficient of Mn in Cu and the temperature could be represented by applying the regular solution model to Cu-Mn solution.

Original language	English
Pages (from-to)	1699-1701
Number of pages	3
Journal	ISIJ International
Volume	47
Issue number	11
DOIs	https://doi.org/10.2355/isijinternational.47.1699
Publication status	Published - 2007

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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abstract = "A slag/metal equilibrium experiment was conducted to derive an equation that correlates the activity coefficient of manganese (Mn) in copper (Cu) to temperature in the process of determining the activity of MnO in slags. The activity of Mn in liquid Cu was measured by equilibrating the Cu with a solid MnO pellet using an Al2O3 crucible in CO-CO2 gas mixture. The activity coefficient of Mn in Cu with respect to liquid Mn was calculated by analyzing Mn in Cu. The metallic Cu separated from a MnO pallet was supplied for the chemical analysis of the Mn by atomic absorption spectroscopy. The linear relationship between the activity and concentration of Mn in Cu was obtained in temperature range from 1623 to 1773K. Experimental investigation showed that the activity coefficient of Mn in Cu and the temperature could be represented by applying the regular solution model to Cu-Mn solution.",

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AU - Jung, Sung Mo

AU - Rhee, Chang Hee

AU - Min, Dong Joon

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Activity coefficient of manganese in copper

Abstract

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