钢液炉外精炼同位脱磷脱硫的可能性研究

Research on the possibility of dephosphorization and desulfurization simultaneously at same location in the secondary refining process

根据脱磷与脱硫反应的反应时间与反应位置,可将铁基熔体在铁水预处理或炉外精炼过程中,用同一种渣系熔剂,既能脱磷又能脱硫的工艺分3类:同位、同时脱磷脱硫工艺;不同位、同时脱磷脱硫工艺;不同时、同位脱磷脱硫工艺。为了研究钢液炉外精炼不同时、同位脱磷脱硫的可能性,首先从理论上进行了探讨,并进一步在LF内进行了探索性试验。研究表明,在钢液炉外精炼过程中采用BaO系熔剂,有可能实现钢液不同时、同位脱磷脱硫。

According to the reaction time and location of hot metal dephosphorization and desulfurization the hot metal pretreatment technologies using one single flux for dephosphorization and desulfurization simultaneously in the process of hot metal pretreatment or in the secondary refining can be basically divided into 3 categories, namely： dephos phorization and desulfurization at the same location and at the same time period; dephos phorization and desulfurization at the same time period but not at the same location; dephosphorization and desulfurization at the same location but not at the same time period. For the purpose of studies on the possibility of dephosphorization and desulfurization of hot metal at the same location but not at the same time period firstly proper theoretical studies and discussion are carried out and then further exploration and experiments conducted in LF. Results of the studies show that dephosphorization and desulfurization of the hot metal at the same location but not at the same time period can be possibly realized by using BaO flux series in the process of the secondary refining.