Desulfurization rate and particle magnesium utilization rate in hot metal pretreatment
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摘要: 通過對宣鋼脫硫站77組生產數據進行多元線性回歸得到了在單吹顆粒鎂鐵水脫硫時噸鐵鎂的消耗xMg(kg/t)、噴吹時間t(s)、鐵水初始硫含量[%S]0、脫硫量xS、鐵水溫度T(K)和噸鐵鎂粒的噴吹速率VMg與脫硫率和鎂的利用率的數學模型.通過對數學模型的研究發現:脫硫率隨噸鐵鎂耗量、初始硫含量的增加而增加,隨噴吹時間、溫度和鎂噴吹速率的增大而降低.鎂利用率隨噸鐵鎂耗量、噴吹時間及噴吹速率的增加而減少,隨噴吹時間的延長、鎂噴吹速率、鐵液中初始硫含量及溫度的升高而升高.在合適的噸鐵鎂消耗量的情況下,要提高脫硫率和鎂利用率,應該在保障脫硫時間的前提下,降低噸鐵鎂噴吹速率,減少噴吹時間.Abstract: The feasibility of desulfurization by particle magnesium in hot metal pretreatment was expoundedthrough calculation in thermodynamics and dynamics. Based on 77 group data of desulfurization process in thdesulfurization station of Xuanhua Iron and Steel Group Co. Ltd., a mathematics model about desulfurization ratand magnesium utilization rate was obtained. The above model is in favor of the optimization of process iXuanhua Steel Plant and it increases the utilization rate of particle magnesium, decreases the consumption of particle magnesium, and saves the cost. To improve the desulfurization ratio of desulfurizer and utilization ratio, thtemperature of hot metal and the mass of particle magnesium should be improved, and the injection speed odesulfurizer and the blowing time should be declined.
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Key words:
- particle magnesium /
- desulfurization /
- hot metal pretreatment
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