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Recovery of platinum group metals from oxide ores—TML Process

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Abstract

The Great Dyke, Zimbabwe, contains over 800 million ounces of platinum and approximately 20 million ounces of rhodium. However, about 10% of the ore is oxidized and cannot be processed with current recovery methods. A conventional flotation-smelting process has been proposed to recover the platinum group metal (PGM) values from the sulfide ores. With the development of a low temperature roasting, acidic bromine leaching process by The Minerals Laboratory of BHP Minerals, substantial PGM recoveries from oxide and mixed oxide/sulfide ores are now possible. This patented TML Process for platiniferous oxide ores will yield recoveries of 95% for gold, 85% for platinum and over 65% for rhodium values.

Keywords

  • Bromide Leaching
  • Platinum
  • Gold
  • Rhodium
  • PGM’s
  • Oxide Ores

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© 1994 Springer Science+Business Media Dordrecht

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Duyvesteyn, S., Liu, H., Duyvesteyn, W.P.C. (1994). Recovery of platinum group metals from oxide ores—TML Process. In: Hydrometallurgy ’94. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1214-7_60

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  • DOI: https://doi.org/10.1007/978-94-011-1214-7_60

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-4532-2

  • Online ISBN: 978-94-011-1214-7

  • eBook Packages: Springer Book Archive