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技术性能先进而洁净的钢是目前以至未来世界炼钢发展趋势。钢的物理性能的改善与炼钢化学和加工手段密切相关。低杂质含量对于达到这一目标具有很大意义。全部现有炼钢新技术的组合已能生产杂质加和水平(即C+S+P+N+H+O)小于100ppm的钢。特殊用途的钢尚需降低其他杂质。连铸可以提高钢的生产效率。在可铸性上有其自己的操作限制。铁合金生产已经紧密追随上述这些发展,并且在钢生产的每一工序中起到应有的作用:铁水脱硫,高纯合金材料,为大量加入、微调或精确的合金化所要求的合适的粒度(块度、粉剂、包芯线),夹杂物形态控制和钢水浇铸性能。用极低杂质含量的锰铁和硅铁连同钙基产品所得到的结果提供了这方面的论证。
Advanced and clean steel technology performance is the trend of steelmaking in the world at present and even in the future. The improvement of physical properties of steel is closely related to the chemical and processing methods of steelmaking. Low impurity content for achieving this goal has great significance. All of the existing steelmaking new technology combinations have been able to produce steels with less than 100 ppm impurity addition levels (ie C + S + P + N + H + O). Special purpose steel still need to reduce other impurities. Continuous casting can improve the production efficiency of steel. There is its own operational limit on castability. Ferroalloys production has been closely following these developments and has played its due role in every process of steel production: hot metal desulphurization, high-purity alloy materials, the appropriate particle size required for mass addition, fine tuning or precise alloying Blockiness, powder, cored wire), inclusions morphology control and casting properties of molten steel. This is demonstrated by the results obtained with very low impurity levels of ferromanganese and ferrosilicon along with calcium-based products.