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<p>The current study investigated the impact of the presence of Cr<sub>2</sub>O<sub>3</sub> on the foaming characteristics of slag. The experimental results revealed that Cr<sub>2</sub>O<sub>3</sub> addition inhibited the slag foaming at various flow rates from 100 to 500 cm<sup>3</sup>/min and temperature points of 1550&#xa0;°C, 1600&#xa0;°C, and 1650&#xa0;°C. The highest foaming height is exhibited at 1650&#xa0;°C for the slag with Cr<sub>2</sub>O<sub>3</sub> additions. The effective viscosity showed a negative effect on foam height. The formation of MgCr<sub>2</sub>O<sub>4</sub> in the slags with 1 and 3 wt pct of Cr<sub>2</sub>O<sub>3</sub> and the formation of AlCr<sub>2</sub>O<sub>4</sub> spinel in the slag with 6 wt pct of Cr<sub>2</sub>O<sub>3</sub> were verified. Additionally, mullite (3CaO·2SiO<sub>2</sub>) was found to be a core of newly formed AlCr<sub>2</sub>O<sub>4</sub> spinel. The formed solid phases in the slag might significantly correlated to the slag foam height.</p>

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The Effect of Cr2O3 Addition on Slag Foaming

  • 期刊论文

  • 发表日期：

    2025年7月23日

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  • Xingwen Wei,
  • Matthew Kurecki,
  • Yuri Korobeinikov,
  • Tetiana Shyrokykh,
  • Seetharaman Sridhar

摘要

The current study investigated the impact of the presence of Cr2O3 on the foaming characteristics of slag. The experimental results revealed that Cr2O3 addition inhibited the slag foaming at various flow rates from 100 to 500 cm3/min and temperature points of 1550 °C, 1600 °C, and 1650 °C. The highest foaming height is exhibited at 1650 °C for the slag with Cr2O3 additions. The effective viscosity showed a negative effect on foam height. The formation of MgCr2O4 in the slags with 1 and 3 wt pct of Cr2O3 and the formation of AlCr2O4 spinel in the slag with 6 wt pct of Cr2O3 were verified. Additionally, mullite (3CaO·2SiO2) was found to be a core of newly formed AlCr2O4 spinel. The formed solid phases in the slag might significantly correlated to the slag foam height.