Determination of Surface Tension of the Freeze Slag in Reaction Shaft of Flash Smelting Furnace

Jin Liang Wang; Yan Xin Wu; Li Wei Liang

doi:10.4028/www.scientific.net/AMR.402.22

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 402Determination of Surface Tension of the Freeze...

Determination of Surface Tension of the Freeze Slag in Reaction Shaft of Flash Smelting Furnace

Abstract:

According to the reaction shaft operation characteristics during the flash smelting process, 15 groups of slag samples containing high Fe₃O₄ were prepared by some chemical reagents, and then the slag surface tensions were measured using a RTW-10 type synthetic test instrument for melt physical property by means of suspension link. The effects of temperature ( T ), basicity ( B ), the Fe/SiO₂ ratio (m_Fe/m_SiO₂), Fe₃O₄ content (ω_Fe₃O₄), Cu₂O content (ω_Cu₂O), MgO content (ω_MgO) and CaO content (ω_CaO) on the slag surface tension (δ) were also studied. Results show that δ fluctuate between 0.3N/m to 0.8 N/m, and is increased with the increase of T, B, m_Fe/m_SiO₂, ω_Cu₂O, ω_MgO and ω_CaO, and with the decrease of ω_Fe₃O₄, under the range of slag contents: m_Fe/m_SiO₂1.36~1.78, ω_Fe₃O₄ 17.83%~21.18%,ω_Cu₂O 3.51%~8.34%,ω_MgO 2.21%~6.57%,ω_CaO 6.22%~9.87% and the temperature range of 1380°C to 1500°C. To make the freeze slag adhere to the reaction shaft inner wall easily, the Fe₃O₄ content in freeze slag should be increased and the inner chamber temperature of reaction shaft should be controlled appropriately.

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Periodical:

Advanced Materials Research (Volume 402)

Pages:

22-27

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.402.22

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Online since:

November 2011

Authors:

Jin Liang Wang, Yan Xin Wu, Li Wei Liang

Keywords:

Flash Smelting Furnace, Freeze Slag, Reaction Shaft, Surface Tension

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