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DOI:
有色金属工程:2018,8(6):-
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尾砂胶结充填体的水泥含量测定试验研究
陈鑫政,杨小聪,郭利杰,彭啸鹏
(1.北京矿冶科技集团有限公司;2.国家金属矿绿色开采国际联合研究中心,1.北京矿冶科技集团有限公司;2.国家金属矿绿色开采国际联合研究中心,1.北京矿冶科技集团有限公司;2.国家金属矿绿色开采国际联合研究中心,1.北京矿冶科技集团有限公司;2.国家金属矿绿色开采国际联合研究中心;3.北京科技大学土木与资源工程学院)
Experimental Study on the Determination of Cement Content in Cemented Tailings Backfill
CHEN Xin-zheng,YANG Xiao-cong,GUO Li-jie and PENG Xiao-peng
(1.BGRIMM Technology Group;2.National Center for International Joint Research on Green Metal Mining,1.BGRIMM Technology Group;2.National Center for International Joint Research on Green Metal Mining,1.BGRIMM Technology Group;2.National Center for International Joint Research on Green Metal Mining,1.BGRIMM Technology Group;2.National Center for International Joint Research on Green Metal Mining; 3.School of Civil and Environmental Engineering, University of Science and Technology Beijing)
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投稿时间:2017-10-10    修订日期:2017-10-10
中文摘要: 矿山充填普遍存在充填料浆离析,导致采场充填体均匀性差和充填体强度降低等问题,目前关于充填料浆离析的研究大都局限在定性描述,尚无定量评价方法,主要原因是还无法准确测定尾砂胶结充填体中水泥的含量。为此,本文通过试验研究系统分析了充填体龄期和充填料浆质量浓度对EDTA滴定法的影响,论证了EDTA滴定法测尾砂胶结充填体水泥含量的有效性,探索出一种新的充填料浆离析和充填体不均性定量评价方法,提出了矿山原位采场充填质量评估的指标。
Abstract:The problem of filling slurry segregation is prevalent in mine filling, and it causes the uniformity of the filling body and decreases the strength of the filling body. The study of filling slurry separation is mostly limited to qualitative description, and there isn’t quantitative evaluation method for that it can not accurately determine the cement content in tailings filling body. In this paper, the effects of filling body age and filling slurry concentration on EDTA titration were analyzed by conducting experimental studies. The effectiveness of EDTA titration method for determine the cement content in cemented tailings backfill is demonstrated, which provides an effective technique for studying the segregation of filling slurry and the uniformity of filling body, and also provides an effective evaluation index for mine enterprises measuring the construction quality of construction units.
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基金项目:国家重点研发计划(2016YFC0600709),北京矿冶研究总院青年创新基金(QC-201728),国家自然科学(51774040)
引用文本:
陈鑫政,杨小聪,郭利杰,彭啸鹏.尾砂胶结充填体的水泥含量测定试验研究[J].有色金属工程,2018,8(6):.

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