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以中磷铁水为对象,选择CaO-CaF_2-FeO_3系为熔剂,在实验室范围内进行了中磷铁水脱磷的研究。实验结果得到,熔剂量为10g/100g-Fe时,脱磷率可达90％以上,并随着熔剂中％Fe_2O_3增加脱磷率增大。还说明了中磷铁水和普通铁水对脱磷熔剂成份的不同要求。根据处理期间[％P]、[％C]的变化规律,熔剂量对脱磷率影响的实验,讨论了脱磷保碳,降低熔剂用量致使该方法在工程上应用的可能性。并从熔剂的脱磷能力、回磷等方面比较了Na_2CO_3和CaO基熔剂的不同脱磷特征,指出用CaO基熔剂处理中磷铁水是更为行之有效的方法。
Taking the medium phosphorus hot metal as the object, the CaO-CaF_2-FeO_3 system was selected as the flux to study the dephosphorization of medium phosphorus in the laboratory. The experimental results show that the dephosphorization rate can reach more than 90% when the flux amount is 10g / 100g-Fe, and the dephosphorization rate increases with the increase of% Fe_2O_3 in the flux. Also shows that the phosphorus in the iron and ordinary hot metal dephosphating flux composition of the different requirements. According to the variation of [% P], [% C] and the influence of flux amount on the dephosphorization rate during the treatment, the possibility of applying this method in engineering was discussed. The different dephosphorization characteristics of Na_2CO_3 and CaO fluxes were compared from the aspects of dephosphorization capability and P - recovery of fluxes. It was pointed out that CaO - based fluxes could be used to treat medium phosphorus hot metal more effectively.