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Conventional top-submerged lance (TSLTop-Submerged Lance (TSL)) furnacesFurnace operate with a wet feed (8–10% moisture), ensuring feed material is sufficiently agglomerated and is not entrained into offgas. While treating wet feed simplifies feed preparation and reduces the capital cost for feed preparation, this moisture in feed increases the overall fuel consumption and offgas volume. The proposed process of drying concentrateConcentrate and injection into the bath would reduce fuel consumption, operating costsOperating Cost and facilitate increases in capacity of existing operationsOperation. This is particularly important for treating low sulphur concentratesConcentrate. The injection of dry concentratesConcentrate into the moltenMolten bath of an Ausmelt TSL furnaceAusmelt TSL Furnace was trialled between BHP and Metso, to improve the heat balance and reduce greenhouse gas emissionsEmissions. Pilot plant trialsPlant Trial demonstrated successful control of key parameters of temperature and matteMatte gradeGrade. Other advantages in terms of reducingReducing fuel consumption and feed carry over into the offgas were also identified.

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Injection of Dry Copper Concentrates in the Ausmelt Top-Submerged Lance (TSL) Furnace

  • 会议论文

  • 发表日期：

    2025年

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  • Stefanie Creedy,
  • Ross Andrews,
  • David Bott,
  • Paul Fitzgerald

摘要

Conventional top-submerged lance (TSLTop-Submerged Lance (TSL)) furnacesFurnace operate with a wet feed (8–10% moisture), ensuring feed material is sufficiently agglomerated and is not entrained into offgas. While treating wet feed simplifies feed preparation and reduces the capital cost for feed preparation, this moisture in feed increases the overall fuel consumption and offgas volume. The proposed process of drying concentrateConcentrate and injection into the bath would reduce fuel consumption, operating costsOperating Cost and facilitate increases in capacity of existing operationsOperation. This is particularly important for treating low sulphur concentratesConcentrate. The injection of dry concentratesConcentrate into the moltenMolten bath of an Ausmelt TSL furnaceAusmelt TSL Furnace was trialled between BHP and Metso, to improve the heat balance and reduce greenhouse gas emissionsEmissions. Pilot plant trialsPlant Trial demonstrated successful control of key parameters of temperature and matteMatte gradeGrade. Other advantages in terms of reducingReducing fuel consumption and feed carry over into the offgas were also identified.