张磊1，杜小满2，王炳文3，侯运炳3

( 1．鄂尔多斯职业学院矿业系，内蒙古鄂尔多斯， 017200; 2．北京建筑材料科学研究总院有限公司，北京， 100041;

3．中国矿业大学( 北京) 资源与安全工程学院，北京， 100083)

关键词: 固结干排; 固结强度; 微观机理

中图分类号: X751 文献标识码: A

摘要: 随着铁选矿厂矿石粉磨工艺的改进，尾砂颗粒的粒径也逐渐减小，细粒级尾砂的处理日益成为研究的重点．尾砂浆脱水后固结干排就是其中一种有效的处理方式．结合有关试验数据试图从微观机理角度解释不同水泥( 普硅水泥和矿渣水泥) ，不同粒级骨料固结强度差异产生的原因，并提出提高固结强度的解决方案．

The mechanism of consolidation strength differences of the fine grade aggregate bond

ZHANG Lei1，DU Xiao-man2，WANG Bing-wen3，HOU Yun-bing3

( 1． Mining Department，Ordos Vocational College，Ordos 017200，China; 2． Beijing Building Materials and Design Institute，Beijing 100012，China; 3． Faculty of Ｒesources ＆ Safety Engineering，CUMTB，Beijing 100083，China)

Key words: consolidation dry emission; consolidation strength; micro-mechanism

Abstract: With the improvement of the ore grinding process，the tailings particle size gradually decreases，and the comprehensive utilization of fine tailings has become the focus of the study． Dry drainage tailings dewatering consolidation is an effective approach．The differences in the intensity of different cement ( ordinary portland cement and slag cement) with different size fractions of aggregate consolidation were explained from the perspective of microscopic mechanism combined with the trials data． Finally，the solutions were proposed to increase the strength of consolidation．