【摘要】 本文着重分析钾、钠、氟在高炉内的行为。主要的依据资料是炉内的气体、固体取样和渣铁成分分析。文中指出钾、钠、氟在炉内的循环富集主要区域是炉腹炉腰及炉身中下部,并具体叙述了在纵向和横向的分布趋势及影响因素。提高炉渣的排碱能力是防止和削弱碱金属危害的主要措施。提高烧结矿中的MgO含量,降低炉渣碱度,降低生铁含硅量,适当增加渣量等都有利于加强炉渣的排碱能力。从各种取样中查明,从炉渣排走的钾比钠少,而炉料中钾的富集比钠多,说明必须以钾为主要控制对象。从气相中钾、钠、氟含量的测定可以初步看到分布规律,并初步明确了气相中钾含量与炉料、炉况及渣碱度的关系。更多还原

【Abstract】 Based on data examined about hot metal, slag, gaseous and solid samples in the blast furnace this paper pointed out that the circulation and the accumulation of alkalis occured mainly in the bosh belly and lower part of the stack. Circulation and accumulation of K in the furnace is more serious than Na.Distribution of K, Na and F in the vertical section of the B. F. are presented, It is necessary to use relatively lower basictity of slag, decrease the hearth temperature or Si content of the pig iron, increase relative slag volume for the sake of counterbalancing the harmful defects of K, Na and F.更多还原