原位观察MgO对烧结高温特性影响研究及应用

doi:10.13228/j.boyuan.issn0449-749x20130618

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摘要烧结矿靠液相固结形成，烧结过程中液相的形成和流动对烧结矿质量起着重要的作用；而随着资源的劣质化，烧结矿TFe品位呈现下降趋势。与Al2O3和SiO2等相比，MgO属于在烧结中主动性配加的成分，其大小影响着烧结液相的熔点、流动性和烧结矿品位。针对京唐混合料，首次采用高温共焦显微镜原位观察了MgO质量分数对烧结液相流动性的影响。研究发现，与不含MgO的混合料相比，配加质量分数为1.7%～2.0%的MgO后，混合料的液相初始形成和大量形成温度均高出50 ℃以上；液相流动速率也显著降低；烧结基础特性测试表明,混合料中MgO质量分数从2.3%降到0.3%后，流动性指数从0.7增大到1.9。在京唐烧结的工业实践表明，烧结实现烧结矿MgO质量分数从2.0%降至1.5%后，烧结矿指标有所改善。

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	裴元东

关键词 ：关键词：烧结, MgO, 基础特性, 高温共聚焦, 混合料

Abstract：Sinter ore was solidified by liquid phase during sintering process, the formation and fluidity of the liquid phase on sinter quality plays a crucial role in determining quality of sinter ore. With the deterioration of ore resource quality, the TFe content of sinter decreased. Compared with Al2O3 and SiO2, MgO belongs to ingredients added voluntarily, and amount of MgO affects the melting and fluidity of melts and TFe of sinter ore. According to Jingtang mixture, effect of MgO in sintering mixture on sintering high temperature properties was in situ observed by confocal lasering scanning microscopy (CLSM for short)in the first time, and compared with sintering basic characteristics equipment. It can be found that, compared with blended ore without MgO, initial and massive melt forming temperature increase above 50 ℃ when adding MgO with the mass percent of it from 1.7% to 2.0%, and fluidity velocity decreases apparently. As the mass percent of MgO decreased from 2.3% to 0.3% in sintering basic characteristics test, fluidity index increases from 0.7 to 1.9 levels. At last, mass percent of MgO in sinter of Jingtang reduced from 2.0% to 1.5% with better sinter quality.

收稿日期: 2013-11-05 出版日期: 2014-11-02

引用本文:

裴元东，吴胜利，赵志星，安钢，苏博，潘文. 原位观察MgO对烧结高温特性影响研究及应用[J]. 钢铁, 2014, 49(11): 14-19. PEI Yuan-dong，，, WU Sheng-li，, ZHAO Zhi-xing, AN Gang, SU Bo，, PAN Wen. In-Situ Observation of Influence of MgO on High Temperature Properties of Sinter Ore. Iron and Steel, 2014, 49(11): 14-19.

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http://www.chinamet.cn/Jweb_gt/CN/10.13228/j.boyuan.issn0449-749x20130618 或 http://www.chinamet.cn/Jweb_gt/CN/Y2014/V49/I11/14

[1]	何环宇,王庆祥曾小宁.MgO含量对高炉炉渣粘度的影响.钢铁研究学报,2006,18(6): 11-13.21. (HE Huanyu, WANG Qingxiang, ZENG Xiaoning.Effet of MgO content on BF slag viscosity. Journal of Iron and Steel Research, 2006,41(3): 8-11.35)
[1]	何环宇,王庆祥曾小宁.MgO含量对高炉炉渣粘度的影响.钢铁研究学报,2006,18(6): 11-13.21. (HE Huanyu, WANG Qingxiang, ZENG Xiaoning.Effet of MgO content on BF slag viscosity. Journal of Iron and Steel Research, 2006,41(3): 8-11.35)
[2]	张玉柱,耿明山,项利,等.MgO含量和碱度对高炉渣的黏度的影响.材料与冶金学报,2005, 4(4): 253-255. (ZHANG Yuzhu, GENG Mingshan, XIANG Li. The influence of MgO and basicity on the viscosity of BF slag. Journal of Materials and Metallurgy, 2005, 4(4): 253-255)
[2]	张玉柱,耿明山,项利,等.MgO含量和碱度对高炉渣的黏度的影响.材料与冶金学报,2005, 4(4): 253-255. (ZHANG Yuzhu, GENG Mingshan, XIANG Li. The influence of MgO and basicity on the viscosity of BF slag. Journal of Materials and Metallurgy, 2005, 4(4): 253-255)
[3]	姜鑫, 吴钢生,金明芳,等.MgO对烧结矿软熔性能的影响.东北大学学报（自然科学版）,2006,27(12): 1358-1361. (JIANG Xin, WU Gangsheng, JIN Mingfang, et al.Effet of MgO on sintering process and metallurgical properties of sinter. Jourcal of Northeastern University（Natural Science）, 2006,27(12): 1358-1361)
[3]	姜鑫, 吴钢生,金明芳,等.MgO对烧结矿软熔性能的影响.东北大学学报（自然科学版）,2006,27(12): 1358-1361. (JIANG Xin, WU Gangsheng, JIN Mingfang, et al.Effet of MgO on sintering process and metallurgical properties of sinter. Jourcal of Northeastern University（Natural Science）, 2006,27(12): 1358-1361)
[4]	甘勤,何群,文永才.MgO对钒钛烧结矿矿物组成及冶金性能影响的研究,2008,43(8): 7-11. (GAN Qin, HE Qun, WEN Yongcai, et al.Effet of Study on influence of MgO on mineral composition and metallurgical properties of V-bearing Titaniferous magnetite sinter. Iron and Steel, 2008,43(8): 7-11.)
[4]	甘勤,何群,文永才.MgO对钒钛烧结矿矿物组成及冶金性能影响的研究,2008,43(8): 7-11. (GAN Qin, HE Qun, WEN Yongcai, et al.Effet of Study on influence of MgO on mineral composition and metallurgical properties of V-bearing Titaniferous magnetite sinter. Iron and Steel, 2008,43(8): 7-11.)
[5]	姜鑫, 吴钢生,魏国,等.MgO对烧结工艺及烧结矿冶金性能的影响.钢铁,2006,41(3): 8-11.35. (JIANG Xin, WU Gangsheng, WEI Guo, et al.Effet of MgO on sintering process and metallurgical properties of sinter. Iron and Steel, 2006,41(3): 8-11.35)
[5]	姜鑫, 吴钢生,魏国,等.MgO对烧结工艺及烧结矿冶金性能的影响.钢铁,2006,41(3): 8-11.35. (JIANG Xin, WU Gangsheng, WEI Guo, et al.Effet of MgO on sintering process and metallurgical properties of sinter. Iron and Steel, 2006,41(3): 8-11.35)
[6]	吴胜利, 韩宏亮, 姜伟忠, 等. 烧结矿中MgO作用机理. 北京科技大学学报, 2009, 31(4): 428-432. (WU Sheng-li, HAN Hongliang, JIANG Weizhong, et al. MgO interaction mechanism in sinter. Journal of University of Science and Technology Beijing, 2009, 31(4): 428-432)
[6]	吴胜利, 韩宏亮, 姜伟忠, 等. 烧结矿中MgO作用机理. 北京科技大学学报, 2009, 31(4): 428-432. (WU Sheng-li, HAN Hongliang, JIANG Weizhong, et al. MgO interaction mechanism in sinter. Journal of University of Science and Technology Beijing, 2009, 31(4): 428-432)
[7]	Hisao KIMURA, Tsutomu OGAWA, Mitsuru KAKIKI, etc. Effect of Al2O3 and MgO Additions on Liquidus for the CaO-SiO2-FeOx System at 1573 K[J]. ISIJ International,2005,45(4): 506-512.
[7]	Hisao KIMURA, Tsutomu OGAWA, Mitsuru KAKIKI, etc. Effect of Al2O3 and MgO Additions on Liquidus for the CaO-SiO2-FeOx System at 1573 K[J]. ISIJ International,2005,45(4): 506-512.
[8]	Kohei YAJIMA, Hiroyuki MATSUURA and Fumitaka TSUKIHASHI, etc. Effect of simultaneous addition of Al2O3 and MgO on the liquidus of the CaO-SiO2-FeOx system with various oxygen partial pressures at 1573 K [J]. ISIJ International,2010,50(2): 191-194.
[8]	Kohei YAJIMA, Hiroyuki MATSUURA and Fumitaka TSUKIHASHI, etc. Effect of simultaneous addition of Al2O3 and MgO on the liquidus of the CaO-SiO2-FeOx system with various oxygen partial pressures at 1573 K [J]. ISIJ International,2010,50(2): 191-194.
[9]	吴胜利, 刘宇, 杜建新, 等. 铁矿石的烧结基础特性之新概念. 北京科技大学学报, 2002, 24(3): 254. (WU Sheng-li, LIU Yu, DU Jian-xin, et al. New concept of iron ores sintering basic characteristics. Journal of University of Science and Technology Beijing, 2002,24(3): 254)
[9]	吴胜利, 刘宇, 杜建新, 等. 铁矿石的烧结基础特性之新概念. 北京科技大学学报, 2002, 24(3): 254. (WU Sheng-li, LIU Yu, DU Jian-xin, et al. New concept of iron ores sintering basic characteristics. Journal of University of Science and Technology Beijing, 2002,24(3): 254)
[10]	Pei yuandong, Zhao baojun, Zhao Zhixing, etc. In Situ Observation of High Temperature Properties of Iron Ore and Its Application in Optimizing Sintering Ore Matching of SHOUGANG JINGTANG[C]//Asia steel2012, 2012:16
[10]	Pei yuandong, Zhao baojun, Zhao Zhixing, etc. In Situ Observation of High Temperature Properties of Iron Ore and Its Application in Optimizing Sintering Ore Matching of SHOUGANG JINGTANG[C]//Asia steel2012, 2012:16