Solubility of rhodium in doré metal

K. Avarmaa; P. Taskinen

doi:10.19150/mmp.7509

Solubility of rhodium in doré metal

K. Avarmaa
, P. Taskinen^*

^*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

The solubilities of rhodium (Rh) in a molten silver alloy in doré-smelting conditions for treating copper refinery slime at temperatures of 1,000 to 1,300 °C were measured using a high-temperature equilibration-quenching technique and direct phase analysis by electron probe X-ray microanalysis. The results obtained indicate that the solubility of rhodium in molten silver is very limited: only 0.04 to 0.26 weight percent at 1,000 and 1,300 °C, respectively. The thermodynamic properties of rhodium in molten silver were estimated from the solubility data. The compositions of the solid rhodium alloys in equilibrium with molten silver-rich doré metal were also measured in this study. The excess rhodium in the doré alloy will precipitate during the refining as solid, greater than 99 weight percent Rh.

Original language	English
Pages (from-to)	91-95
Number of pages	5
Journal	Minerals and Metallurgical Processing
Volume	34
Issue number	2
DOIs	https://doi.org/10.19150/mmp.7509
Publication status	Published - 1 May 2017
MoE publication type	A1 Journal article-refereed

Keywords

Anode slime treatment
Precious metals smelting
Silver
Thermodynamics

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10.19150/mmp.7509

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title = "Solubility of rhodium in dor{\'e} metal",

abstract = "The solubilities of rhodium (Rh) in a molten silver alloy in dor{\'e}-smelting conditions for treating copper refinery slime at temperatures of 1,000 to 1,300 °C were measured using a high-temperature equilibration-quenching technique and direct phase analysis by electron probe X-ray microanalysis. The results obtained indicate that the solubility of rhodium in molten silver is very limited: only 0.04 to 0.26 weight percent at 1,000 and 1,300 °C, respectively. The thermodynamic properties of rhodium in molten silver were estimated from the solubility data. The compositions of the solid rhodium alloys in equilibrium with molten silver-rich dor{\'e} metal were also measured in this study. The excess rhodium in the dor{\'e} alloy will precipitate during the refining as solid, greater than 99 weight percent Rh.",

keywords = "Anode slime treatment, Precious metals smelting, Silver, Thermodynamics",

author = "K. Avarmaa and P. Taskinen",

year = "2017",

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doi = "10.19150/mmp.7509",

language = "English",

volume = "34",

pages = "91--95",

journal = "Minerals and Metallurgical Processing",

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publisher = "Society for Mining, Metallurgy and Exploration",

number = "2",

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TY - JOUR

T1 - Solubility of rhodium in doré metal

AU - Avarmaa, K.

AU - Taskinen, P.

PY - 2017/5/1

Y1 - 2017/5/1

N2 - The solubilities of rhodium (Rh) in a molten silver alloy in doré-smelting conditions for treating copper refinery slime at temperatures of 1,000 to 1,300 °C were measured using a high-temperature equilibration-quenching technique and direct phase analysis by electron probe X-ray microanalysis. The results obtained indicate that the solubility of rhodium in molten silver is very limited: only 0.04 to 0.26 weight percent at 1,000 and 1,300 °C, respectively. The thermodynamic properties of rhodium in molten silver were estimated from the solubility data. The compositions of the solid rhodium alloys in equilibrium with molten silver-rich doré metal were also measured in this study. The excess rhodium in the doré alloy will precipitate during the refining as solid, greater than 99 weight percent Rh.

AB - The solubilities of rhodium (Rh) in a molten silver alloy in doré-smelting conditions for treating copper refinery slime at temperatures of 1,000 to 1,300 °C were measured using a high-temperature equilibration-quenching technique and direct phase analysis by electron probe X-ray microanalysis. The results obtained indicate that the solubility of rhodium in molten silver is very limited: only 0.04 to 0.26 weight percent at 1,000 and 1,300 °C, respectively. The thermodynamic properties of rhodium in molten silver were estimated from the solubility data. The compositions of the solid rhodium alloys in equilibrium with molten silver-rich doré metal were also measured in this study. The excess rhodium in the doré alloy will precipitate during the refining as solid, greater than 99 weight percent Rh.

KW - Anode slime treatment

KW - Precious metals smelting

KW - Silver

KW - Thermodynamics

UR - https://www.scopus.com/pages/publications/85019092936

U2 - 10.19150/mmp.7509

DO - 10.19150/mmp.7509

M3 - Article

AN - SCOPUS:85019092936

SN - 0747-9182

VL - 34

SP - 91

EP - 95

JO - Minerals and Metallurgical Processing

JF - Minerals and Metallurgical Processing

IS - 2

ER -

Solubility of rhodium in doré metal

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