The Oxidation of Manganese and Phosphorus in Hot Metal Pretreatment
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摘要: 采用石灰系熔劑處理低硅、高錳,中磷鐵水,以研究錳和磷的氧化。實驗結果表明:在1573~1623K,鐵水中﹝%Mn﹞>0.32時,錳比磷優先發生氧化;當﹝%Mn﹞<0.32時,磷比錳優先發生氧化。為了能順利地進行脫磷,必須將鐵水中的錳脫除到0.3%以下。通過熱力學計算,從理論上也證實了上述錳和磷的氧化規律。Abstract: The Oxidized relation between Mn and P in pretreatment of hot metal containing low Si, high Mn and mid P by using lime-based flux was investigated. The results show that when﹝%Mn﹞ is above 0.32, Mn is more preferential oxidized than P, and when﹝%Mn﹞is low 0.32, the result is contrary to one above mentioned at 1573-1623K. The Mn content which is low 0.3% in hot metal is necessary in order to obtain the sufficient dephosphorization.
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Key words:
- hot metal /
- dephosphorization /
- preferential oxidation /
- Mn
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