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首页> 外文期刊>Ironmaking & Steelmaking >Influence of process conditions during Ruhrstahl-Hereaeus refining process and effect of vacuum degassing on carbon removal to ultra-low levels
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Influence of process conditions during Ruhrstahl-Hereaeus refining process and effect of vacuum degassing on carbon removal to ultra-low levels

机译:ruhrstahl-hereaeus精炼过程中工艺条件的影响及真空脱气对超低水平的碳酸脱气的影响

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摘要

The effect of the time taken to add the alloy and the gas injection mode are significant factors for fast decarburisation. Industrial experiments and thermodynamic calculations are adopted to show the transition of the main factors and reaction sites with time. The results indicate that adding steel scrap and alloy are not recommended in the first 7 min in order to keep good thermodynamic and dynamic conditions. The gas injection mode is more critical for reducing the chamber pressure to 67 Pa in 8.5 min and the gas volume should be less than 10 m(3) in the first 4 min after the reaction begins. This method is effective in improving the decarburisation rate and decreasing the carbon content at the end of decarburisation. For 69% of the site tests the final carbon content was kept to about 10 ppm within 15 min.
机译:加入合金的时间和气体注入模式的效果是快速脱碳的重要因素。 采用工业实验和热力学计算,展示了主要因素和反应部位随时间的过渡。 结果表明,在前7分钟内不建议添加钢材和合金,以保持良好的热力学和动态条件。 气体注入模式对于在8.5分钟内将腔室压力降低至67Pa,并且在反应开始后,气体体积应在前4分钟内小于10米(3)。 该方法在改善脱碳率并降低脱碳率结束时的碳含量是有效的。 对于69%的位点测试,最终碳含量在15分钟内保持约10ppm。

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