Abstract：The recycling of LF hot steel slag of casting residue from ladles can reduce the release of waste slag and the harm to the environment. The paper analyzed the desulphurizing ability and recuperability of LF hot steel slag. It can decrease the consumption of slag charge critically after LF hot steel slag were recycled to the BOF or LF and took part in the metallurgic reaction. It can reduce the consumption of lime 5 kg/t after recycling LF hot steel slag 1-1.5 t per ladle. And it can cut the consumption of slag charge 10-15 kg/t after recycle casting residue 3-5 t per ladle. After adopting the slagging regime of adding lime powder to hot steel slag in LF，the end-point sulphur content was almost the same with the normal treatment with the same time since the slagging rate was improved， meanwhile the process saved the power consumption，but the effect on the pick-up of silicon and magnesium in molten steel should be considered. The hot recycling of casting residue lows the temperature of molten iron into the converter for steel-making，thus the low lance level during the whole BOF treating process was preferable. Under the condition of not influencing the production，the best utilizing method of hot slag lies in the application of LF hot steel slag into the converter.
彭情亮，唐萍，文光华，等.LF热态渣循环利用炉渣成分控制[J].钢铁，2013，48(7)：84-88.(PENG Qing-liang, TANG Ping, WEN Guang-hua. Slag composition control for the re-utilization of LF hot steel slag[J]. Iron and steel, 2013, 48(7):84-88.)
[1]
彭情亮，唐萍，文光华，等.LF热态渣循环利用炉渣成分控制[J].钢铁，2013，48(7)：84-88.(PENG Qing-liang, TANG Ping, WEN Guang-hua. Slag composition control for the re-utilization of LF hot steel slag[J]. Iron and steel, 2013, 48(7):84-88.)
[2]
赵俊学，李小明，郭家林，等.LF钢渣返回利用的脱硫研究[J].炼钢，2009，25(4)：38-41.(ZHAO Jun-xue, LI Xiao-ming, GUO Jia-lin. Study on LF slag recycling use for desulphurization[J]. steelmaking, 2009, 25(4):38-41.)
[2]
赵俊学，李小明，郭家林，等.LF钢渣返回利用的脱硫研究[J].炼钢，2009，25(4)：38-41.(ZHAO Jun-xue, LI Xiao-ming, GUO Jia-lin. Study on LF slag recycling use for desulphurization[J]. steelmaking, 2009, 25(4):38-41.)
[3]
廖鹏，李进，王一成，等.LF热态渣补加石灰再利用的脱硫研究[J].炼钢，2011，27(4)：54-57.(LIAO Peng, LI Jin, WANG Yi-cheng. Research on desulphurization using recycled LF as hot slag with added lime[J]. steelmaking, 2011, 27(4): 54-57.)
[3]
廖鹏，李进，王一成，等.LF热态渣补加石灰再利用的脱硫研究[J].炼钢，2011，27(4)：54-57.(LIAO Peng, LI Jin, WANG Yi-cheng. Research on desulphurization using recycled LF as hot slag with added lime[J]. steelmaking, 2011, 27(4): 54-57.)
[4]
张峰，方得霞.LF热态精炼渣在转炉炼钢厂的循环应用试验[J].炼钢，2010，26(1)：25-27.(ZHANG Feng, FANG De-xia. Re-utilization of LF hot refining slag in converter steel-making plant[J]. steelmaking, 2010, 26(1): 25-27.)
[4]
张峰，方得霞.LF热态精炼渣在转炉炼钢厂的循环应用试验[J].炼钢，2010，26(1)：25-27.(ZHANG Feng, FANG De-xia. Re-utilization of LF hot refining slag in converter steel-making plant[J]. steelmaking, 2010, 26(1): 25-27.)
[5]
郭奠荣.钢包铸余渣热态循环利用实践[J].炼钢，2014，30(6)：18-21.(GUO Dian-rong. Produce on the hot recycling of casting residue from ladles[J]. steelmaking, 2014, 30(6):18-21.)
[5]
郭奠荣.钢包铸余渣热态循环利用实践[J].炼钢，2014，30(6)：18-21.(GUO Dian-rong. Produce on the hot recycling of casting residue from ladles[J]. steelmaking, 2014, 30(6):18-21.)
[6]
梁连科，车荫昌，杨怀，等.冶金热力学及动力学[M].沈阳：东北工学院出版社，1990:160. (Liang Lian-ke, Che Meng-chang, Yang huai, et a1. Metallurgic thermodynamics and kinetics[M]. Shenyang: Northeastern engineering college press , 1990:160.)
[6]
梁连科，车荫昌，杨怀，等.冶金热力学及动力学[M].沈阳：东北工学院出版社，1990:160. (Liang Lian-ke, Che Meng-chang, Yang huai, et a1. Metallurgic thermodynamics and kinetics[M]. Shenyang: Northeastern engineering college press , 1990:160.)
[7]
丁广友，徐志荣，史翠微，等.LF热态钢渣循环再利用技术的开发与应用[J].炼钢，2006，22(4)：12-15.(DING Guang-you, XU Zhi-rong, SHI Cui-wei. Development and application of re-utilization technology of LF hot steel-making slag[J]. steelmaking, 2006, 22(4):12-15.)
[7]
丁广友，徐志荣，史翠微，等.LF热态钢渣循环再利用技术的开发与应用[J].炼钢，2006，22(4)：12-15.(DING Guang-you, XU Zhi-rong, SHI Cui-wei. Development and application of re-utilization technology of LF hot steel-making slag[J]. steelmaking, 2006, 22(4):12-15.)
[8]
李太全，包燕平，吴华杰，等.高级别管线钢超低硫控制研究[J].钢铁，2009，44(5)：35-38.(LI Tai-quan, BAO Yan-ping, WU Hua-jie. Controlling of super-low sulfide of high grade pipeline steel[J]. Iron and steel, 2009, 44(5): 35-38.)
[8]
李太全，包燕平，吴华杰，等.高级别管线钢超低硫控制研究[J].钢铁，2009，44(5)：35-38.(LI Tai-quan, BAO Yan-ping, WU Hua-jie. Controlling of super-low sulfide of high grade pipeline steel[J]. Iron and steel, 2009, 44(5): 35-38.)
[9]
马勇，赵成林，陈志威，等.LF热态铸余钢渣用于钢水脱硫实验[J].辽宁科技大学学报，2012，35(6)：590-593.(MA Yong, ZHAO Cheng-lin, CHEN Zhi-wei. Research of desulphrization in LF hot casting residue[J]. Journal of university of science and technology LIAONING. 2012, 35(6): 590-593.)
[9]
马勇，赵成林，陈志威，等.LF热态铸余钢渣用于钢水脱硫实验[J].辽宁科技大学学报，2012，35(6)：590-593.(MA Yong, ZHAO Cheng-lin, CHEN Zhi-wei. Research of desulphrization in LF hot casting residue[J]. Journal of university of science and technology LIAONING. 2012, 35(6): 590-593.)
[10]
吴伟，邹宗树，郭振和，等.复吹转炉最佳成渣路线的探讨[J].钢铁研究学报，2004，16(1)：21-24.(WU Wei, ZOU Zong-shu, GUO Zhen-he. Optimum slag forming route for BOF with top and bottom blowing oxygen[J]. Journal of iron and steel research, 2004, 16(1): 21-24.)
[10]
吴伟，邹宗树，郭振和，等.复吹转炉最佳成渣路线的探讨[J].钢铁研究学报，2004，16(1)：21-24.(WU Wei, ZOU Zong-shu, GUO Zhen-he. Optimum slag forming route for BOF with top and bottom blowing oxygen[J]. Journal of iron and steel research, 2004, 16(1): 21-24.)
2015, Vol. 50 
