Effects of Li₂O on Properties of Low Fluoride Content Mould Flux for High Speed Continuous Casting

Abstract:

In order to reduce fluorine pollution, partial fluoride could be replaced by Li₂O in mould flux. The effects of Li₂O on properties of low fluoride content mould flux for high speed continuous casting were studied. The properties included melting temperature, viscosity, fluidity, surface tension and Al₂O₃ inclusion adsorption. The results showed that with the increase of Li₂O content, melting temperature and viscosity of mould flux decreased obviously, fluidity increased, surface tension changed little, and Al₂O₃ inclusion adsorption of mould flux increased. In order to play an effective role, the appropriate Li2O content should be less than 4 per cent. The crystallization state of mould flux changed after slag adsorbed Al₂O₃. There were some small cuspidine and wollastonite crystals in the sample.

• Periodical: Advanced Materials Research (Volumes 306-307)
• Pages: 1549-1552
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.306-307.1549
• Online since: August 2011
• Authors: Yan Qing Lu, Guo Dong Zhang, Mao Fa Jiang
• Keywords: High Speed Continuous Casting, Low Content Fluoride, Mould Flux

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