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Declining copperCopper gradesGrade and a transition to pyritePyrite-chalcopyriteChalcopyrite rich concentratesConcentrate challenges the future economic viability of theDirect-to-blister direct-to-blisterBlister furnaceFurnace (DBF) operationOperation at the Olympic DamOlympic Dam smelterSmelter. To adapt to these changing feed sources BHP is studying re-purposing the DBF to operate as a flash converting furnaceFlash converting furnace (FCF) in a double flash furnaceFlash furnace flowsheet. The industry standard for FCF operationOperation is a calcium ferrite slagCalcium ferrite slag system, this contrasts with the existing DBF which operates with a fayaliteFayalite system. A methodology is proposed of transitioning from DBF to FCF operationsOperation without a cold shutdown and furnaceFurnace re-brick. This method involves commencing matteMatte feed with a fayaliteFayalite slagSlag system and then the option for a controlled transition to a calcium ferrite system during ongoing operationsOperation. This potential re-purposing of the installed technologyTechnology and slag chemistrySlag chemistry transition would avoid furnaceFurnace downtime and decrease waste from the existing furnaceFurnace.

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Direct-to-Blister to Flash Converting and Transition of Slag Systems: Proposed Future for Olympic Dam Smelter

  • 会议论文

  • 发表日期：

    2025年

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  • David Bott,
  • Yan-Hui Yang,
  • Paul Fitzgerald

摘要

Declining copperCopper gradesGrade and a transition to pyritePyrite-chalcopyriteChalcopyrite rich concentratesConcentrate challenges the future economic viability of theDirect-to-blister direct-to-blisterBlister furnaceFurnace (DBF) operationOperation at the Olympic DamOlympic Dam smelterSmelter. To adapt to these changing feed sources BHP is studying re-purposing the DBF to operate as a flash converting furnaceFlash converting furnace (FCF) in a double flash furnaceFlash furnace flowsheet. The industry standard for FCF operationOperation is a calcium ferrite slagCalcium ferrite slag system, this contrasts with the existing DBF which operates with a fayaliteFayalite system. A methodology is proposed of transitioning from DBF to FCF operationsOperation without a cold shutdown and furnaceFurnace re-brick. This method involves commencing matteMatte feed with a fayaliteFayalite slagSlag system and then the option for a controlled transition to a calcium ferrite system during ongoing operationsOperation. This potential re-purposing of the installed technologyTechnology and slag chemistrySlag chemistry transition would avoid furnaceFurnace downtime and decrease waste from the existing furnaceFurnace.