Acta Metall Sin  1997, Vol. 33 Issue (7): 718-728    DOI:

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APPLICATION-BASIS STUDY OF KEY TECHNOLOGIES IN CARBON-BEARING PELLETS-IRON BATH SMELTING REDUCTION PROCESS

DU Ting;DU Kun (Central Iron & Steel Research institute; Ministry of Metallurgical Industry; Beijing 100081)

DU Ting;DU Kun (Central Iron & Steel Research institute; Ministry of Metallurgical Industry; Beijing 100081). APPLICATION-BASIS STUDY OF KEY TECHNOLOGIES IN CARBON-BEARING PELLETS-IRON BATH SMELTING REDUCTION PROCESS. Acta Metall Sin, 1997, 33(7): 718-728.

Abstract References Related Articles Recommended Metrics Download:  PDF(1046KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The key technologies in carbon-bearing pellets-iron bath smelting reduction process have been studied systematically, which is based on using non-coke coal and iron concentrate. The experimental research has made a break through in solving problem in high temperature strengh of carbon--bearing pellets, which had not been solved during a long time domestically and abroad. The self-reduction kinetic model of carbon-bearing pellets, reoxidation mechanism and the technical measures for speeding up the prereduction rate and improving the resistant properties against the oxidation of the pellets have been put forward. The new carbon-bearing pellets of high carbon content, high strength, high self-reduction rate and high resistance to oxidation have been developed succesfully. Meanwhile, the melting and reduction kinetics of the pellets in iron bath has been studied. The optimized process parameters of contraling the reduction rate, final reducibility, carbon content in hot metal and desulphurisation have been obtained. Key words:  carbon-bearing iron ore pellet      pre-reduction      final reduction      iron bath      smelting reduction      Received:  18 July 1997      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1997/V33/I7/718 1杜挺,邓开文.钢铁冶炼新工艺.北京:北京大学出版社,1994:1,16,141,147 2杜挺.钢铁,1992;27(1):67 3杜挺.钢铁,1993;28(9):82 4熔融还原技术考察组.熔融还原工艺技术考察报告(内部资料),1995 5杜挺,牟慧妍.见:杜挺科技文集,北京:冶金工业出版社,1996:367 6McAdam G. D. Ironmaking Steelmaking, 1977; 4(1): 1 7周渝生.冶金工业部钢铁研究总院博士学位论文,1988 8杜昆.冶金工业部钢铁研究总院博士学位论文,1992 9郑丛杰.含碳球团在铁浴中熔融还原应用基础研究.冶金工业部钢铁研究总院博士学位论文,1995 10周取定,孔令坛.铁矿造块理论及工艺.北京:冶金工业出版社,1989:19 11 MichiganTechnologyUniversity.Skillingr‘MinRev,1986;75(15):4 12唐贤荣,李咸伟.烧结球团,1992;(2):1 13 Szekly Jf Karatas C. Metall Trans, 1978; 9B: 147Q [1] XU Kuangdi; JIANG Guochang; ZHANG Xiaobing; XU Jianlun (Shanghai Enhanced Laboratory of Ferrometallurgy; Shanghai University; Shanghai 200072). Cr YIELD AND OXIDATIONAL DEPHOSPHORIZATION DURING THE BATH SMELTING REDUCTION PROCESS[J]. 金属学报, 1998, 34(5): 467-472. [2] LIU Qingcai(Chongqing University;Chongqing 630044)(Department of Metallurgy and Materials Engineering;Chongqing University;Chongqing 630044)(Manuscript received 1995-12-11;in revised form 1996-06-14). RELATIONSHIPS BETWEEN SMELTING REDUCTION RATE AND SLAG STRUCTURE FOR VANADIUM-TITANIUM-CONTAINING MAG NETITE[J]. 金属学报, 1996, 32(10): 1081-1086. [3] HUANG Zongze; XIAO Xingguo; XIAO Zeqiang(Department of Ferrous Metallurgy; Northeastern University; Shenyang 110006); Singh S D(National Metallurgical Laboratory; Jamshedpur; India 831007)(Manuscript received 1994-04-26). FOAMING BEHAVIOUR OF CaO-SiO_2-Al_2O_3-FeO SLAGS[J]. 金属学报, 1995, 31(19): 289-294. [4] LIU Qingcai;LI Changwei;ZOU Deyu;SUN Jinbiao Chongqing UniversityZHANG Binghuai;professor;Department of Metallurgy and Materials Engineering.Chong ping University.Chongping 630044. THERMODYNAMICS OF V REDUCTION IN SMELTING REDUCTION SLAG FOR VANADIUM-TITANIUMCONTAINING MAGNETITE[J]. 金属学报, 1993, 29(5): 49-55. [5] ZHANG Binghuai;ZOU Deyu;JIN Kehe;LIU Qingcai Chongqing University. KINETICS OF SMELTING REDUCTION FOR VANADIUM-TITANIUM-CONTAINING MAGNETITE[J]. 金属学报, 1992, 28(1): 51-56. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed