Structure Model of Granules for Sintering Mixtures

Li-shun YUAN,Xiao-hui FAN,Min GAN,Gui-ming YANG,Yi WANG

钢铁研究学报(英文版) ›› 2014, Vol. 21 ›› Issue (10) : 905-909.

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钢铁研究学报(英文版) ›› 2014, Vol. 21 ›› Issue (10) : 905-909.
Metallurgy and Metal Working

Structure Model of Granules for Sintering Mixtures

  • Li-shun YUAN,Xiao-hui FAN,Min GAN,Gui-ming YANG,Yi WANG
作者信息 +

Structure Model of Granules for Sintering Mixtures

  • Li-shun YUAN,Xiao-hui FAN,Min GAN,Gui-ming YANG,Yi WANG
Author information +
文章历史 +

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.

关键词

sintering mixture / granule structure model / iron ore

Key words

sintering mixture / granule structure model / iron ore

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导出引用
袁礼顺, 范晓慧, 甘敏, . 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. Structure Model of Granules for Sintering Mixtures[J]. Journal of Iron and Steel Research International, 2014, 21(10): 905-909

基金

国家自然科学基金委员会与宝钢集团有限公司联合资助项目

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