MgO/Al<sub>2</sub>O<sub>3</sub>及炉料结构对炉料熔滴性能的影响

马保良; 张玉柱; 潘向阳; 龙跃; 李神子; 杜培培

doi:10.7513/j.issn.1004-7638.2019.05.021

MgO/Al₂O₃及炉料结构对炉料熔滴性能的影响

doi: 10.7513/j.issn.1004-7638.2019.05.021

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

基金项目:

河北省科技计划项目（编号：17217691D）。

详细信息

作者简介:
马保良(1969-),男,博士研究生,工程师,主要从事钢铁冶金工作,E-mail:mbl606mbl@sina.com.

通讯作者:
张玉柱(1956-),男,教授,博士生导师,主要研究冶金节能与资源优化,E-mail:zyz@ncst.edu.cn。

中图分类号: TF046.4
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出版历程
- 收稿日期: 2019-01-25

Effect of MgO/Al₂O₃ and Burden Structure on Droplet Properties of Comprehensive Burden

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

摘要

摘要: 通过高温熔滴炉模拟实际高炉冶炼条件，研究了MgO/Al₂O₃及炉料结构对综合炉料熔滴性能的影响。结果表明：MgO/Al₂O₃由0.9增加到1.0后，炉料软化和熔化温度均升高，炉料的最大压差和总特性值分别由3 057 Pa和202.84 kPa·℃降低到1 911 Pa和116.52 kPa·℃，熔滴性能得到改善；烧结矿配比由68%降低到60%后，炉料软化温度降低，熔化温度变化不大，最大压差和总特性值分别由1 911 Pa和116.52 kPa·℃降低到1 440.6 Pa和75.10 kPa·℃，熔滴性能得到改善。结合炉料熔滴过程中的压差变化及滴落物与未滴落物质量，得出结论：当烧结矿MgO/Al₂O₃=1.0，炉料结构为68%烧结矿+16%熔剂性球团矿+16%块矿时，综合炉料的熔滴性能最优。
- 烧结矿 /
- MgO/Al₂O₃ /
- 炉料结构 /
- 熔滴性能
Abstract: Effect of MgO/Al₂O₃ and burden structure on droplet properties of comprehensive burden was studied by simulating actual blast furnace smelting conditions in high temperature drop furnace.The results show that when MgO/Al₂O₃ increases from 0.9 to 1.0,the softening and melting temperatures of furnace charge increase,the maximum pressure difference and total characteristic values of furnace charge decrease from 3 057 Pa and 202.84 kPa·℃ to 1 911 Pa and 116.52 kPa·℃,respectively,and the droplet properties are improved; when sinter ratio decreases from 68% to 60%,the softening temperature of furnace charge decreases,the melting temperature changes little,the maximum pressure difference and total characteristic values are respectively.From 1 911 Pa and 116.52 kPa·℃ to 1 440.6 Pa and 75.10 kPa·℃,the droplet performance was improved.Combining the pressure difference change and the droplets and non-droplets in the process of droplet melting,it is concluded that when sinter MgO/Al₂O₃=1.0 and burden structure is 68% sinter+16% flux pellet+16% lump ore,the droplet performance of the comprehensive burden is the best.
- sinter /
- MgO/Al₂O₃ /
- charge structure /
- droplet performance