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Copper Penetration of a Lance in a Smelting Furnace of the Mitsubishi Process

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Abstract

This study was aimed to determine the main cause of lance fracture in a smelting furnace of the Mitsubishi continuous process for Cu production. Investigation of lances used in field operations, thermodynamic analysis and laboratory experiments were conducted. By analyzing the lances, damaged surface of the lances and penetration of matte components into the lance were observed. The depth of damage was strongly dependent on the lance height which was related to temperature. To determine the temperature of the lance fracture, thermodynamics calculations and laboratory experiments were conducted. Both results showed that the formation of Cu liquids above 1100 °C could be the main cause of lance fracture during operation of Cu smelting furnaces of the Mitsubishi process.

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Abbreviations

CFD:

Computational fluid dynamics

S-furnace:

Smelting furnace

SEM:

Scanning electron microscopy

EDS:

Energy-dispersive X-ray spectroscopy

EBSD:

Electron backscatter diffraction

BCC:

Body-centered cubic

FCC:

Face-centered cubic

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Seoul National University, 1 Gwanakro, Gwanak-gu, Seoul, 151-742, Republic of Korea

    Sung-Mi Lim & Kyung-Woo Yi

  2. Research Institute of Advanced Materials, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Republic of Korea

    Kyung-Woo Yi

Authors
  1. Sung-Mi Lim
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  2. Kyung-Woo Yi
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Correspondence to Kyung-Woo Yi.

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Lim, SM., Yi, KW. Copper Penetration of a Lance in a Smelting Furnace of the Mitsubishi Process. Met. Mater. Int. 28, 907–918 (2022). https://doi.org/10.1007/s12540-020-00959-4

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  • DOI: https://doi.org/10.1007/s12540-020-00959-4

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