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Ferronickel production process, from saprolite nickelNickel lateritic ores, uses typically a pyrometallurgical route known as RKEFRotary Kiln and Electric Furnace (RKEF) (rotary kiln and electric furnaceRotary Kiln and Electric Furnace (RKEF)). For proper smeltingSmelting in the electric furnaceElectric furnace, it is strategically functional that moltenMolten slag tappingSlag tapping occurs at approximately 1650 °C continuously and safely in each channel. The present work aims to present the metallurgical studies and simulations for optimizationOptimization of mass flow, velocity, heat exchangeHeat exchange, adhesion of solid/liquid surfaces, and geometric optimizationOptimization for the slagSlag transport during tappingTapping, which justified the replacementReplacement of steel water-cooled laundersLaunders by copperCopper water-cooled modules which resulted in increase of productivity, safetySafety, and ergonomics for operators as well as better slagSlag granulationGranulation control.

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Brazilian Ferronickel Smelter Improves Slag Granulation Operation Using Copper Water-Cooled Launders

  • 会议论文

  • 发表日期：

    2025年

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  • Marco Santos,
  • Antonio Patricio,
  • Leandro Patricio,
  • Deyvid Silva,
  • José Rodrigues,
  • Manuel Rodriguez,
  • Rafael Carias

摘要

Ferronickel production process, from saprolite nickelNickel lateritic ores, uses typically a pyrometallurgical route known as RKEFRotary Kiln and Electric Furnace (RKEF) (rotary kiln and electric furnaceRotary Kiln and Electric Furnace (RKEF)). For proper smeltingSmelting in the electric furnaceElectric furnace, it is strategically functional that moltenMolten slag tappingSlag tapping occurs at approximately 1650 °C continuously and safely in each channel. The present work aims to present the metallurgical studies and simulations for optimizationOptimization of mass flow, velocity, heat exchangeHeat exchange, adhesion of solid/liquid surfaces, and geometric optimizationOptimization for the slagSlag transport during tappingTapping, which justified the replacementReplacement of steel water-cooled laundersLaunders by copperCopper water-cooled modules which resulted in increase of productivity, safetySafety, and ergonomics for operators as well as better slagSlag granulationGranulation control.