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轉爐濺渣護爐模擬研究

Simulation on Slag Splashing for LD Converter

  • 摘要: 討論了轉爐濺渣護爐過程中各參數的影響,試驗以修正的弗魯德數(Fr)作為相似基礎。實驗室采用石蠟加淀粉對30t轉爐進行了模擬研究,通過對試驗數據的處理和分析,得到了最佳的工藝參數:氮氣流量約為8500m3/h,濺渣時間為3min,槍位為0.8m;向渣中加入氧化鎂或碳粒以調整成分是必要的;爐渣溫度過高,流動性過好,濺起的爐渣難以凝結在爐襯中。

     

    Abstract: Several parameters affecting slag splashing in LD converter have been discussed. Using paraffin and starch model, a simulated test about 30t converter has been made in laboratory and the modified Froude number was chosen as the main similar basis of the system. It was results that the optimized slag splashing parameters was obtained through data treatment. The nitrogen gas flow rate is about 8 500m3/h, the splashing time is of 3 min, and the lance height is of 0.8m. It is necessary to add MgO or carbon into the slag to adjusting slag composition. Also, it is difficult for the splashed slag condensing on the line when the slag temperature is much higher.

     

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