Distribution of precious metals (Au, Pt, Pd, Rh and Ru) between copper matte and iron- silicate slag at 1573 K

Hector M. Henao, Katsunori Yamaguchi, Shigeru Ueda

研究成果: Conference contribution

15 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルSohn International Symposium
ホスト出版物のサブタイトルAdvanced Processing of Metals and Materials - Proceedings of the International Symposium
ページ723-729
ページ数7
出版ステータスPublished - 2006 12 1
外部発表はい
イベント2006 TMS Fall Extraction and Processing Division: Sohn International Symposium - San Diego, CA, United States
継続期間: 2006 8 272006 8 31

出版物シリーズ

名前2006 TMS Fall Extraction and Processing Division: Sohn International Symposium
1

Other

Other2006 TMS Fall Extraction and Processing Division: Sohn International Symposium
国/地域United States
CitySan Diego, CA
Period06/8/2706/8/31

ASJC Scopus subject areas

  • 工学(全般)

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