高炉用煤粉的混合添加剂研究

彭其春; 周飞; 郭宜彬

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高炉用煤粉的混合添加剂研究

1. 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室, 湖北武汉 430081;
2. 湖南华菱集团湘潭钢铁公司炼铁厂, 湖南湘潭 411101

详细信息

作者简介:
彭其春(1964—),男,湖北潜江人,武汉科技大学材料与冶金学院副教授,博士,主要从事高炉工艺研究。

中图分类号: TF538.6⁺³
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- 文章访问数: 20
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- 被引次数: 0
出版历程
- 收稿日期: 2008-01-10
- 网络出版日期: 2023-12-05

Study on Pulverized Coal with Mixture Additive Used for Blast Furnace in Laboratory

1. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China;
2. Xiangtan Iron&Steel Company of Hualing Group, Xiangtan 411101, Hunan, China

摘要

摘要: 为强化煤粉的燃烧,改善其燃烧性能,从添加物质的助燃机理出发,通过TG/DSC和正交实验分析,研究了不同配比下的添加物质对煤粉的燃烧性能的影响。TG/DSC分析表明可选用CaCO₃、MnO₂和CeO₂作为混合添加物质的主要组成。正交优化燃烧实验结果表明,不同配比下煤粉的燃烧速率和燃烧率均有较大提高,其中燃烧开始5min的燃烧速率约提高0.45⁰.91 mg/min,而煤粉的燃烧率平均约提高20%;添加物组成的最优化条件是w_(CaCO₃):w_(MnO₂):w_(CeO₂)=1.5:2.5:2.5,其中CaCO₃水平的变动对实验结果有显著影响。
- 煤粉 /
- 混合添加剂 /
- 燃烧速率 /
- 燃烧率 /
- 正交实验
Abstract: In order to strengthen combustion of pulverized coal and improve combustion capability,the effect of coal combustion capability with different blending ratio of additives has been studied by TG/DSC and orthogonal experiment,which bases on the combustion-supporting mechanism of additives.The result of TG/DSC analysis shows that CaCO₃ can be selected as the main composition in mixture additives as well as MnO₂ and CeO₂.The result of orthogonal experiments of coal powder combustion shows that both burning velocity and combustion ratio of coal have been enhanced greatly.The burning velocity of coal with additives increased by 0.45~0.91 mg/min and the combustion ratio by 20%.Meanwhile,the optimization condition is w_(CaCO₃):w_(MnO₂):w_(CeO₂)=1.5:2.5:2.5,and the CaCO₃ level changing has a remarkable effect on the test results.
- pulverized coal /
- mixture additive /
- burning velocity /
- combustion ratio /
- orthogonal experiment