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减水剂对磷尾矿胶结充填料浆输送流动性能影响研究
引用本文:高贺然,黄远来,邱跃琴,王昊. 减水剂对磷尾矿胶结充填料浆输送流动性能影响研究[J]. 矿冶工程, 2018, 38(1): 30-34. DOI: 10.3969/j.issn.0253-6099.2018.01.007
作者姓名:高贺然  黄远来  邱跃琴  王昊
作者单位:1.贵州大学 矿业学院,贵州 贵阳 550025; 2.贵州大学 贵州省非金属矿产资源综合利用重点实验室,贵州 贵阳 550025; 3.贵州大学 贵州省优势矿产资源高效利用工程实验室,贵州 贵阳 550025
基金项目:国家科技支撑计划课题(2013BAB07B03)
摘    要:采用贵州某磷尾矿为骨料、粉煤灰和水泥为胶凝材料,制备了胶结充填料浆。采用扩展度法、流动度法及L型管法研究了聚羧酸系和萘系减水剂对磷尾矿充填料浆流动性能的影响。结果表明,聚羧酸系减水剂添加量为1.2%时对充填料浆流动性能的改变较大,萘系减水剂添加量为8%时料浆流动性可达到较好的效果;二者相比,聚羧酸系减水剂优于萘系减水剂。同时聚羧酸系减水剂对磷尾矿充填料浆具有较强的分散作用,能改变水泥絮凝结构,提高充填料浆的流动性能。

关 键 词:减水剂  磷尾矿  胶结充填  流动性  管道输送  减阻  充填料浆  
收稿时间:2017-08-06

Influence of Water Reducer on Fluidity of Phosphate Tailings Cemented Paste Backfill
GAO He-ran,HUANG Yuan-lai,QIU Yue-qin,WANG Hao. Influence of Water Reducer on Fluidity of Phosphate Tailings Cemented Paste Backfill[J]. Mining and Metallurgical Engineering, 2018, 38(1): 30-34. DOI: 10.3969/j.issn.0253-6099.2018.01.007
Authors:GAO He-ran  HUANG Yuan-lai  QIU Yue-qin  WANG Hao
Affiliation:1.School of Mining, Guizhou University, Guiyang 550025, Guizhou, China; 2.Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources, Guiyang 550025, Guizhou, China; 3.Guizhou Engineering Lab of Mineral Resources, Guizhou University, Guiyang 550025, Guizhou, China
Abstract:A kind of cemented paste backfill (CPB) was prepared with some Guizhou phosphate tailings as aggregate, fly ash and cement as binding materials. Effects of polycarboxylate water reducer and naphthalene water reducer on the fluidity of phosphate tailings cemented past backfill were investigated with extended degree, fluidity method and L-tube. Results showed that an addition of polycarboxylate water reducer at an amount of 1.2% could bring a significant change in the paste fluidity, while an addition of 8% naphthalene water reducer could result in the better fluidity of backfill. Comparison of two kinds of water reducers showed polycarboxylate water reducer is superior to naphthalene water reducer. Furthermore, polycarboxylate water reducer brought a strong dispersing effect on phosphorus tailings backfill, and destroyed the flocculation structure of cement particles, thus improved the fluidity of the CPB.
Keywords:water reducer  phosphate tailings  cemented backfill  fluidity  pipeline transportation  anti-resistance  past backfill  
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