Decomposition of sulfide phases and subsequent matte collection in the black top of a platinum group metal smelter

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dc.contributor.author Rivera Li Kao, Oscar
dc.contributor.author Garbers-Craig, Andrie Mariana
dc.date.accessioned 2025-02-21T07:52:33Z
dc.date.available 2025-02-21T07:52:33Z
dc.date.issued 2025
dc.description.abstract This study explored, on a laboratory scale, how matte separates from the gangue in the black top of a PGM smelter. Two PGM concentrates, one with high sulfide content (17.3 mass%, Platreef concentrate) and the other with low sulfide content (1.3 mass%, UG-2 concentrate), were studied in the temperature range of 800°C to 1480°C, which is the temperature gradient across the black top. The results showed that effective matte separation occurs at temperatures when the matte is completely molten, and a substantial amount of liquid silicate phase has formed. The main matte separation mechanism is the coalescence of sulfide prills and their gravitational settling through the continuous path created by the liquid silicate phase. Complete matte separation occurs at lower temperatures in Platreef concentrate (1400°C in Platreef concentrate vs. 1480°C in UG-2 concentrate), due to the higher concentration of liquid silicate phase of lower viscosity, as well as the higher amount of sulfide minerals in this concentrate. PGMs already dissolve and collect in a nickel-iron-based alloy associated with the matte at temperatures as low as 900°C. en_US
dc.description.department Materials Science and Metallurgical Engineering en_US
dc.description.librarian am2024 en_US
dc.description.sdg SDG-12:Responsible consumption and production en_US
dc.description.sponsorship Anglo American. en_US
dc.description.uri http://www.tandfonline.com/journals/gmpr20 en_US
dc.identifier.citation Oscar Rivera Li Kao & Andrie Garbers-Craig (23 Jun 2024): Decomposition of Sulfide Phases and Subsequent Matte Collection in the Black Top of a Platinum Group Metal Smelter, Mineral Processing and Extractive Metallurgy Review, DOI: 10.1080/08827508.2024.2367414. en_US
dc.identifier.issn 0882-7508 (print)
dc.identifier.issn 1547-7401 (online)
dc.identifier.other 10.1080/08827508.2024.2367414
dc.identifier.uri http://hdl.handle.net/2263/101115
dc.language.iso en en_US
dc.publisher Taylor and Francis en_US
dc.rights © 2024 The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License. en_US
dc.subject Black top en_US
dc.subject Smelting en_US
dc.subject Sulfides en_US
dc.subject Matte collection en_US
dc.subject SDG-12: Responsible consumption and production en_US
dc.subject Platinum group metal (PGM) en_US
dc.title Decomposition of sulfide phases and subsequent matte collection in the black top of a platinum group metal smelter en_US
dc.type Article en_US


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