东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (6): 832-835.DOI: -

• 材料与冶金 • 上一篇    下一篇

压汞法表征铁矿球团固结程度

高强健，姜鑫，魏国，沈峰满   

  1. (东北大学材料与冶金学院，辽宁沈阳110819)
  • 收稿日期:2012-12-31 修回日期:2012-12-31 出版日期:2013-06-15 发布日期:2013-12-31
  • 通讯作者: 高强健
  • 作者简介:高强健(1987-)，男，辽宁阜新人，东北大学博士研究生；沈峰满(1958-)，男，黑龙江密山人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51074040).

Characterization of Consolidation Degree of Iron Ore Pellet by Mercury Injection Method

GAO Qiangjian， JIANG Xin， WEI Guo， SHEN Fengman   

  1. School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2012-12-31 Revised:2012-12-31 Online:2013-06-15 Published:2013-12-31
  • Contact: GAO Qiangjian
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摘要： 基于压汞法，定义了球团矿的氧化焙烧固结指数(OCI)，并以其表征球团矿氧化焙烧固结程度.通过分析不同球团矿生球氧化焙烧过程中球团矿孔隙率及孔径大小的变化，计算球团焙烧固结指数.同时，对相应的成品球团矿的抗压强度进行测试.结果表明:粒化工艺和原料条件相对稳定情况下，氧化球团固结指数越高，球团固结越完全，球团抗压强度越大.该方法不仅可掌握球团矿自身物性，而且能够准确表征球团氧化焙烧的固结程度，为科研、生产人员提供了一种氧化球团矿质量的评价指标.

关键词: 压汞法, 铁矿球团, 固结指数(OCI), 孔隙率, 强度

Abstract: Mercury injection apparatus， which is a measuring instrument for solid porosity and pore size distribution， is widely used in the analysis of powder metallurgy and ceramic materials due to its advantages such as high precision and easy to operate. Based on mercury injection method， the oxideconsolidation index (OCI) is defined to represent the consolidation degree in process of roasting for pellets. The OCI was calculated according to measuring porosity and pore size of different iron ore pellets when the green pellets were roasted to product pellets. At the same time， the compressive strength of these product pellets was detected. Comparing OCI and compressive strength of pellets， it is found that， when the pelletizing technique and raw materials are stable， the oxideconsolidation index (OCI) is higher， the consolidation degree is more complete， and the compressive strength of product pellets is higher. This method not only exposits the physical character of pellets， but also represents the consolidation degree of pellets precisely， which will provide an analysis method and evaluating indicator for pellets to investigator and producer.

Key words: mercury injection method, iron ore pellet, oxideconsolidation index(OCI), porosity, strength

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