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May 22, 2026Journal of Sustainable Materials Science and Engineering

Evaluation of Mineral Melting in Drop Tube Furnace for Copper Smelting

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Authors

NNNobuyasu NishiokaKUKyosuke UnoHTHiromichi Takebe

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Overview

Randomized trial evaluates mineral flammability and melting in copper smelting, suggesting improved efficiency through specific additives.

Key Points

  • This research aims to identify the minerals that trigger ignition and affect the melting process in copper smelting.
  • Used a drop tube furnace to assess flammability and melting of sulfide mineral mixtures.
  • Captured ignition and combustion events using charge-coupled device and high-speed cameras.
  • Analyzed quenched samples with scanning electron microscopy and energy-dispersive X-ray spectroscopy.
  • FeS 2 and CuFeS 2 successfully ignited and melted, while Cu 5 FeS 4 and Cu 2 S did not show flammability or melting.
  • Addition of FeS 2 and CuFeS 2 improved melting of nonflammable minerals.
  • Multiple regression analysis indicated the significant influence of flammable minerals on melting outcomes.

Cite This Study

Nishioka et al. (2026) studied this question.

synapsesocial.com/papers/6a0ff3ffd674f7c03778d061https://doi.org/10.1142/s3060892925500041
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