精炼炉渣活化再利用於炼钢脱磷与脱硫之研究-中国鑛冶工程学会互动.PDFVIP

精煉爐渣活化再利用於煉鋼脫磷與脫硫之 研究* The study of dephosphorization and desulfurization during steel- making using the recycling refining slag of activation 1 2 3 4 5 C.M. Lin, C.H. Chen, C.C. Li, K.L. Chang, W. Wu The purpose of this study is to investigate the efficiency of using activated refining slag for steel dephosphorization and desulfurization and to optimize the application of activated refining slag . We u sed a h igh fr equ en cy in du ct ion 100% 25.2% furnace to conduct the dephosphorization and 25%CaO 75% desulfurization experiments. Results revealed +25%CaO 62.2% that the dephosphorizer with 100% refining slag 50%CaO 50% had a dephosphorization ratio of 25.2%. When +50%CaO activated with 25% CaO, the dephosphorization 65.4% CaO ratio increased to 62.2%. When activated with CaO 110.8% 50% CaO, the dephosphorization ratio increased 50%CaO 69.5% to 65.4%. The desulfurizer with 100% refining 100% slag has the best desulfurization ratio of 9.8% Free-CaO that is less than 2.6 times of dephosphorization 9.8% 2.6 ratio. As the percent of CaO increased from 25%CaO 25% to 50%, the desulfurization ratio increased 75% +25%CaO fr om 19 . 1% t o 55 .8% . Th e comp etition of 19.1% 50%CaO dephosphorization and desulfurization utilizing 50% +50%CaO the recycling ref ining slag showed that the 55.8% efficiency of dephosphorization is about 17% higher than that of desulfurization. The optimal 17% application of activated ref ining slag for the CaO 50% dephosphorizer is 50% CaO.