报告了11立方米高炉冶炼庞家堡铁矿时炉料样品包括矿石和初渣的岩相分析結果,并結合溫度測定数据画出了高炉中等溫线及各区域的分布情况和各区炉料中的相成份。根据以上实驗結果,討論了冶炼一般酸性鉄矿时的初渣形成机理和硅酸铁的还原过程。
From the results of thermodynamic calculations and petrographic examination, it has been found that in an 11 m~3 blast furnace smelting Pang-Chia-Pao iron ore, rankinite always forms as the primary crystalline phase, or in parallel with dicalcium silicate. Rankinite subsequently reacts with calcium oxide to form dicalcium silicate and reacts with fayalite to form wollastonite. These reactions can be represented as follows:2(2FeO. SiO_2)+3CaO=3CaO·2SiO_2+4FeO,3CaO·2SiO_2+CaO=2(2CaO·SiO_2),3CaO·2SiO_2+2FeO·SiO_2=3(CaO·SiO_2)+2FeO.The reduction of fayalite is also discussed.
参考文献
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