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氧气顶吹转炉脱硫能力非常有限。在上海第一钢铁厂三转炉车间炉前观察,一般正常操作情况下:脱磷任务基本上能顺利完成,但钢水硫往往降不下来,有时还产生增硫。在添加返回渣(车间转炉渣经破碎过筛)的炉次中,情况未见改善。石灰用量基本上受脱硫任务制约。因终点硫无法预测,前期加入过量石灰或后期多次倒炉补加石灰,除直接增加石灰消耗外,还造成操作被动,恶化了一系列技术经济指标。为此,希望寻求终点硫与石灰加入量的关系。1981年底在该厂三转炉车间进行了九十八炉试验,其中七十
Oxygen top converter desulfurization capacity is very limited. In the first Shanghai Iron and Steel Plant three converter furnace observation before the furnace, under normal operating conditions: dephosphorization task can basically be successfully completed, but the molten steel sulfur is often not down, and sometimes also by sulfur. In adding slag return (workshop converter slag crushed sieve) in the heat, the situation did not improve. The amount of lime is basically subject to desulfurization tasks. Due to the unpredictable end-point sulfur, excessive lime added in the early period or additional lime added in the subsequent multiple refractories not only increased the lime consumption directly, but also caused the operation to be passive and aggravated a series of technical and economic indicators. To this end, I hope to find the relationship between the end of sulfur and the amount of lime added. At the end of 1981, 98 furnaces were tested in the three-converter workshop of the plant, of which seventy