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原料中的碱金属氧化物(K_2O,Na_2O)在高炉冶炼过程中循环积累,给高炉生产带来严重的危害.关于这个问题,已经引起国内外炼铁工作者的广泛重视.包钢高炉冶炼用的白云鄂博矿石,不仅含有较多的氟化物,而且还含有较多的氧化钾、氧化钠等碱金属化合物,致使高炉炉况失常,频繁结瘤,生产指标长期落后.1975年研究二号高炉结瘤时,就提出了“钾、钠在高炉中循环积累是导致高炉结瘤的重要原因”.从那以后,经过几年的生产实践和试验研究,特别是1980年开展炉瘤攻关以来,高炉工作者对碱金属在高炉中的行为有了更进一步的认识.1980年以来由于原料中碱金属含量不断升高,高炉碱负荷从吨铁8公斤升高到12公斤以上,而高炉主要生产指标不仅没
The alkali metal oxides (K 2 O, Na 2 O) in the raw materials accumulate in the process of blast furnace smelting, which brings serious harm to the blast furnace production.With regard to this issue, it has attracted extensive attention from domestic and foreign ironmakers. Of the Bayan Obo ore, not only contains more fluoride, but also contains more potassium oxide, sodium oxide and other alkali compounds, resulting in abnormal blast furnace conditions, frequent nodulation, long-term backward production targets. At the time of nodulation, it was put forward that “the accumulation of potassium and sodium in the blast furnace is an important cause of nodulation in the blast furnace.” Since then, after several years of production practice and experimental research, especially since 1980, Blast furnace workers on the behavior of alkali metal in the blast furnace have a better understanding since 1980 due to rising raw material alkali metal content, blast furnace alkali load increased from 8 kg of iron per ton to 12 kg, while the blast furnace main production Not only did not index