TY - GEN
T1 - Distribution of precious metals (Au, Pt, Pd, Rh and Ru) between copper matte and iron- silicate slag at 1573 K
AU - Henao, Hector M.
AU - Yamaguchi, Katsunori
AU - Ueda, Shigeru
PY - 2006/12/1
Y1 - 2006/12/1
N2 - There is an increasing trend in the copper smelters to recycle electronic materials, which contain relatively high concentration of precious metals. As a consequence, the amount of precious metals lost in the slag phase is increasing. To determine the portion of the precious metals chemically dissolved and that associated with the mechanically trapped matte in the slag will be a key factor to improve the recovery of those metals. Thus, an experimental study was carried out to determine the distribution of precious metals (Au, Pt, Pd, Rh, Ru) between the equilibrated copper matte and iron-silicate slag phases. The experiments were made in a magnesia crucible at 1573 K and a fixed partial pressure of SO2 of 0.1 atm for the matte grades between 40 and 70 mass% of copper. It was found that the distribution ratios (defined as mass% X in slag/mass% X in matte, where X represents the precious metal) are around 10-2 for Ru, 10-3 for Au, Pt and Pd and 10-4 for Rh. The distribution ratios show a tendency to increase when the grade of matte is increased.
AB - There is an increasing trend in the copper smelters to recycle electronic materials, which contain relatively high concentration of precious metals. As a consequence, the amount of precious metals lost in the slag phase is increasing. To determine the portion of the precious metals chemically dissolved and that associated with the mechanically trapped matte in the slag will be a key factor to improve the recovery of those metals. Thus, an experimental study was carried out to determine the distribution of precious metals (Au, Pt, Pd, Rh, Ru) between the equilibrated copper matte and iron-silicate slag phases. The experiments were made in a magnesia crucible at 1573 K and a fixed partial pressure of SO2 of 0.1 atm for the matte grades between 40 and 70 mass% of copper. It was found that the distribution ratios (defined as mass% X in slag/mass% X in matte, where X represents the precious metal) are around 10-2 for Ru, 10-3 for Au, Pt and Pd and 10-4 for Rh. The distribution ratios show a tendency to increase when the grade of matte is increased.
KW - Distribution ratio
KW - Matte
KW - Precious metals
KW - Slag
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M3 - Conference contribution
AN - SCOPUS:33846051939
SN - 0873396332
SN - 9780873396332
T3 - 2006 TMS Fall Extraction and Processing Division: Sohn International Symposium
SP - 723
EP - 729
BT - Sohn International Symposium
T2 - 2006 TMS Fall Extraction and Processing Division: Sohn International Symposium
Y2 - 27 August 2006 through 31 August 2006
ER -