MgO对酸性球团矿冶金性能的影响

李神子; 龙跃; 潘向阳; 杜培培; 马保良

doi:10.7513/j.issn.1004-7638.2020.01.020

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MgO对酸性球团矿冶金性能的影响

doi: 10.7513/j.issn.1004-7638.2020.01.020

李神子^1,2,
龙跃^1,2, ,,
潘向阳^1,2,
杜培培^1,3,
马保良⁴

1. 华北理工大学冶金与能源学院, 河北唐山 063210;
2. 华北理工大学现代冶金技术教育部重点实验室, 河北唐山 063210;
3. 东北大学冶金学院, 辽宁沈阳 110819;
4. 邢台钢铁有限责任公司, 河北邢台 054027

基金项目:

河北省科技计划项目(编号:17217691D)

详细信息

作者简介:
李神子(1994-),女,河北秦皇岛人,在读硕士研究生。研究方向:炼铁工艺。E-mail:578042930@qq.com

通讯作者:
龙跃(1976-),男,重庆忠县人,教授,硕士研究生导师。研究方向:炼铁工艺、冶金固体废弃物综合利用。E-mail:longyue@ncst.edu.cn

中图分类号: TF046.6
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- 被引次数: 0
出版历程
- 收稿日期: 2019-06-20

Effect of MgO Content on Metallurgical Properties of Acid Pellets

Li Shenzi^1,2,
Long Yue^{1,2
, ,},
Pan Xiangyang^1,2,
Du Peipei^1,3,
Ma Baoliang⁴

1. School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, China;
2. Modern Metallurgical Technique Key Laboratory of Ministry of Education, North China University of Science and Technology, Tangshan 063210, Hebei, China;
3. School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China;
4. Xingtai iron and Steel Co., Ltd., Xingtai 054027, Hebei, China

摘要

摘要: 球团矿中适宜的MgO含量能改善其冶金性能,有利于高炉的冶炼,因此,在球团矿中寻求适宜的MgO含量至关重要。试验采用研山三系列铁精粉、白云石粉及高镁粉混合造球,配以铁矿石冶金性能综合测试仪、XRD和金相显微镜等测试手段,探究MgO含量对酸性球团矿冶金性能的影响规律。结果表明:随着MgO含量的增加,酸性球团矿的低温还原粉化和还原性得到改善;酸性球团矿的抗压强度在MgO含量为2.0%时最好,可达到3 050 N;当MgO含量在1.8~2.0%时,球团矿的矿物组成较好,铁酸钙含量较多,赤铁矿结晶较完善。
- 酸性球团矿 /
- MgO /
- 微观结构 /
- 冶金性能
Abstract: Appropriate MgO content in pellets can improve their metallurgical properties and is beneficial to blast furnace smelting.Therefore,it is very important to determine suitable MgO content in pellets.In this experiment,Yanshan No.3 type of iron concentrate powder,dolomite powder and high magnesium powder were mixed to make pellets.The influence of MgO content on the metallurgical properties of acidic pellets was investigated by means of comprehensive tester for metallurgical properties of iron ore,XRD and metallographic microscope.The results show that with the increase of MgO content,the low temperature reduction pulverization and reducibility of acid pellets are improved.The best compressive strength of acid pellets can be achieved when MgO content is 2.0%,reaching 3 050 N.When MgO content is in the range of 1.8%～2.0%,the better mineral composition of pellets is obtained with morecalcium ferrite content and better crystallization of hematite.
- acidic pellets /
- MgO /
- microstructure /
- metallurgical properties