Formation Characteristics of Calcium Ferrite in Low Silicon Sinter

钢铁研究学报(英文版), 2011, 18(10): 1-7.

Formation Characteristics of Calcium Ferrite in Low Silicon Sinter

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1.College of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;／College of Material and Metallurgy, University of Science and Technology Inner Mongolia, Baotou 014010, Inner Mongolia, China

2.College of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;

3.College of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;／College of Material and Metallurgy, University of Science and Technology Inner Mongolia, Baotou 014010, Inner Mongolia, China

4.College of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;／College of Material and Metallurgy, University of Science and Technology Inner Mongolia, Baotou 014010, Inner Mongolia, China

基金项目: Natural Science Foundation of Inner Mongolia of China(2009MS0702) National Natural Science Foundation of China(50944049)

关键词：低硅烧结矿 , 铁酸钙 , 氧化镁含量 , 包头钢铁公司 , 烧结温度 , 显微镜分析 , 烧结试验 , 烧结参数

Formation Characteristics of Calcium Ferrite in Low Silicon Sinter

Keywords： low silicon sinter , formation characteristics , calcium ferrite , sintering temperature , basicity ,

Influence of sintering temperature, basicity and MgO content on the formation characteristics of calcium ferrite in low silicon sinter of Baotou Iron and Steel Company was studied by means of mini-sintering test and mineralographic microscope analysis. In addition, the suitable sintering parameters such as temperature and basicity were explored. The results found that optimum temperature for the formation of calcium ferrite is 1 280℃, the basicity of 2.5-2.8 is helpful to the development of acicular or columnar calcium ferrite, and MgO content in the low silicon sintering raw materials should be lower than 2.8 % because MgO can intensively inhibit the formation of calcium ferrite. And calcium ferrite in the sinter belongs to calcium ferrite with low calcium, which is different from that in ordinary sinter at home and abroad. So, it provided theoretical basis for promoting formation of calcium ferrite in low silicon sinter and improving properties of sinter.

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Formation Characteristics of Calcium Ferrite in Low Silicon Sinter

Formation Characteristics of Calcium Ferrite in Low Silicon Sinter

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