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首页> 外文会议>2011 International Conference on Materials for Renewable Energy Environment >Effects of cryolite on properties of low flouride content mould flux for thin slab continuous casting
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Effects of cryolite on properties of low flouride content mould flux for thin slab continuous casting

机译：冰晶石对薄板坯连铸低氟结晶器保护渣性能的影响

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Cryolite could be as candidate of NaF and CaF2 to reduce environment pollution in mould flux for thin slab continuous casting. Using industrial and waste materials and synthetic test instrument for the physical properties of slag, the effects of cryolite on melting temperature, viscosity, fluidity, surface tension, Al2O3 inclusion and adsorption of mould flux were studied, as well as the effect of basicity on crystallization property. The results showed that when basicity was 0.81, with the increase of cryolite content, melting temperature and viscosity decreased obviously, and fluidity and surface tension of mould flux increased. When basicity was 1.03, with the increase of cryolite content, melting temperature and fluidity increased obviously, and viscosity and surface tension of mould flux decreased. When basicity was 1.22, with the increase of cryolite content, melting temperature increased obviously, and viscosity, fluidity and surface tension of mould flux decreased. Inclusion adsorption had no change in any basicity. The basicity had great influence on crystallization property. The higher basicity was, the more obvious crystallization of slag became. The cryolite content should be less than 9 percent so that it could play an effective role. The results would play a guiding role in designing of mould flux for thin slab continuous casting.
机译：冰晶石可以作为NaF和CaF 2 的候选材料，以减少薄板坯连铸结晶器保护渣中的环境污染。使用工业废料和合成测试仪测定矿渣的物理性能，冰晶石对熔融温度，粘度，流动性，表面张力，Al 2 O 3 夹杂物的影响研究了熔剂的吸附和吸附，以及碱度对结晶性能的影响。结果表明，当碱度为0.81时，随着冰晶石含量的增加，熔融温度和黏度明显降低，结晶器熔剂的流动性和表面张力增加。当碱度为1.03时，随着冰晶石含量的增加，熔融温度和流动性显着增加，并且脱模剂的粘度和表面张力降低。当碱度为1.22时，随着冰晶石含量的增加，熔体温度明显升高，而熔剂的粘度，流动性和表面张力降低。夹杂物吸附基本没有变化。碱度对结晶性能有很大的影响。碱度越高，矿渣的结晶变得越明显。冰晶石含量应小于9％，以便发挥有效作用。研究结果对薄板坯连铸结晶器保护渣的设计具有指导意义。

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