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一、铁水炉外脱硫工艺。由于包钢原料中含钾、钠较高,高炉结瘤问题特别严重。因此,降低高炉渣碱度,造酸性渣,以利于排除钾钠;而铁水进行炉外脱硫,已是炼铁正常生产当务之急。包钢矿石资源中含有铌等稀有元素,磷的含量也较高,存在提铌脱磷综合处理铁水问题。用勺炉化铁,在250公斤的铁水包中进行顶喷钠盐予处理。铁水成份列于表1。粉
First, outside the hot metal desulphurization process. Due to the high content of potassium and sodium in Baotou Steel, the problem of nodule formation in blast furnace is particularly serious. Therefore, to reduce the basicity of blast furnace slag and make acid residue, in order to facilitate the removal of potassium and sodium; and hot metal desulfurization outside the furnace, it is the most urgent task of normal production of iron. Baotou Steel Resources contains rare elements such as niobium, phosphorus content is also higher, there is mention mention niobium dephosphorization comprehensive treatment of hot metal problem. Spoon the iron with a spoon and treat it with a top-spray sodium salt in a 250-kg ladle. The hot metal ingredients are listed in Table 1. powder