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首页> 外文期刊>Ironmaking & Steelmaking >Dephosphorisation of high phosphorus oolitic hematite by carbon composite pre-reduction and fast melting separation
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Dephosphorisation of high phosphorus oolitic hematite by carbon composite pre-reduction and fast melting separation

机译：通过碳复合预析和快速熔化分离脱磷高磷赤石赤铁矿

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摘要

High phosphorus oolitic hematite deposit is a kind of refractory iron ore resource of huge amount. At present, it is difficult to be utilised by traditional physical and chemical technology efficiently and economically. A novel process for utilisation of the high phosphorus oolitic hematite based on carbon composite pre-reduction and fast melting separation has been put forward in the paper. High grade pig iron nugget of low phosphorus could be obtained in the present research. The influence of experimental conditions, such as pre-reduction temperature, C/O (molar ratio) and basicity, on the dephosphorisation behaviours was studied in detail. The thermodynamic basis and reduction and melting separation process were also analysed. The phosphorus content in the iron nugget decreased with the increasing of basicity and increased with the increasing of C/O. The optimum parameters were pre-reduction temperature of 1200 degrees C for 30 min, C/O of 0.95 and basicity of 1.7. After melting separation of molten iron and slag at 1400 degrees C for 10 min, the iron nugget containing 0.02 wt-% [P] would be obtained. The dephosphorisation degree and iron yield in the form of iron nugget were 97.5% and 96.9% respectively. The iron nugget may be directly used as the raw materials of steelmaking from the view point of its high grade.
机译：高磷鲕粒赤铁矿沉积物是一种巨大的耐火铁矿石资源。目前，难以通过传统的物理和化学技术有效地和经济地利用。本文提出了一种基于碳复合预缩减和快速熔化分离的基于碳复合材料预析和快速熔化分离的高磷鲕粒锂的新方法。在本研究中可以获得低磷的高级猪铁块。详细研究了实验条件的影响，例如预还原温度，C / O（摩尔比）和碱度。还分析了热力学基础和还原和熔化分离过程。铁扣核中的磷含量随着碱度的增加而降低，随着C / O的增加而增加。最佳参数为1200℃的预还原温度30分钟，C / O为0.95，碱度为1.7。在1400℃下熔化铁水和炉渣的分离后10分钟，将获得含有0.02重量％[P]的铁扣金。铁块形式的脱磷度和铁产率分别为97.5％和96.9％。铁扣块可以直接用作高等级视点的炼钢原料。

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