Structure Model of Granules for Sintering Mixtures
Li-shun YUAN,Xiao-hui FAN,Min GAN,Gui-ming YANG,Yi WANG
作者信息+
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
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折叠
Structure Model of Granules for Sintering Mixtures
Li-shun YUAN,Xiao-hui FAN,Min GAN,Gui-ming YANG,Yi WANG
Author information+
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
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文章历史+
收稿日期
修回日期
出版日期
2013-01-16
2013-05-08
2014-10-15
发布日期
2014-10-08
摘要
Structure model of granules, boundary value of nucleus and powder, and the relationship between granulation efficiency and boundary value were investigated. Granules of sintering mixtures are composed of adhesive powder and nucleus. In the mixtures, particles larger than 1.00 mm act as nucleus and particles smaller than 0.25 mm act as adhesive powder. Particles with size between 0.25-1.00 mm can be adhesive powder as well as nucleus depending on the granulation conditions. When the boundary value is close to 0.25 mm, the granulation efficiency is lower than 50%. When the boundary value is close to 1.00 mm, the granulation efficiency is above 90%. The boundary value is influenced by the iron ore type, granulation moisture, fineness of raw materials and burnt-lime activity. Good adhesive capability, suitable moisture content, appropriate particle size distribution and high burnt-lime activity make the boundary value move towards 1.00 mm and improve the granulation efficiency.
Abstract
Structure model of granules, boundary value of nucleus and powder, and the relationship between granulation efficiency and boundary value were investigated. Granules of sintering mixtures are composed of adhesive powder and nucleus. In the mixtures, particles larger than 1.00 mm act as nucleus and particles smaller than 0.25 mm act as adhesive powder. Particles with size between 0.25-1.00 mm can be adhesive powder as well as nucleus depending on the granulation conditions. When the boundary value is close to 0.25 mm, the granulation efficiency is lower than 50%. When the boundary value is close to 1.00 mm, the granulation efficiency is above 90%. The boundary value is influenced by the iron ore type, granulation moisture, fineness of raw materials and burnt-lime activity. Good adhesive capability, suitable moisture content, appropriate particle size distribution and high burnt-lime activity make the boundary value move towards 1.00 mm and improve the granulation efficiency.
袁礼顺, 范晓慧, 甘敏, 等. , {{custom_author.name_cn}}等.
Structure Model of Granules for Sintering Mixtures[J]. 钢铁研究学报(英文版), 2014, 21(10): 905-909
YUAN Li-Shun, FAN Xiao-Hui, HAN Min, et al. , {{custom_author.name_en}}et al.
Structure Model of Granules for Sintering Mixtures[J]. Journal of Iron and Steel Research International, 2014, 21(10): 905-909