粉煤灰-矿渣基固结粉胶凝材料开发与配比优化研究
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摘要
为了提高黄土坡铜锌矿采矿经济效益,利用当地廉价的粉煤灰和矿渣固废资源,然后开展尾砂骨料低成本绿色充填胶凝材料试验研究,开展胶砂比1∶4和料浆浓度74%的粉煤灰-矿渣基固结粉胶凝材料配比的胶结充填体强度试验。在此基础上,分别针对粉煤灰掺量为40%和45%,开展2种固结粉胶凝材料配方优化试验,由此获得A种固结粉优化配方为粉煤灰40%、水泥熟料12%、脱硫石膏10%和矿渣微粉38%,材料成本为132元/t;B种固结粉优化配方为粉煤灰45%、为水泥熟料10%、脱硫石膏12%和矿渣微粉33%,材料成本为122元/t;2种固结粉胶凝材料胶结充填体强度均满足黄土坡铜锌矿胶结充填体强度要求,其固结粉胶凝材料成本比普通硅酸水泥材料降低了67.8%～70.2%。黄土坡矿应用实践证明,该胶凝材料具有显著经济效益和环保效益。
In order to improve the economic benefit of copper and zinc mine in Huangtupo,experimental study on green filling cementing material of tailings aggregate with low cost was carried out by using the local cheap fly ash and slag solid waste resources.And the strength test of cementing material of fly ash-slag based consolidated powder was conducted with cementsand ratio of 1∶4 and slurry concentration of 74%.On this basis,two experiments were carried out to optimize the formulation of cementing powder with fly ash content of 40% and 45% respectively.The optimized formula of type A consolidation powder was obtained as follows:fly ash of 40%,cement clinker of 12%,desulphurization gypsum of 10% and slag powder of 38%,and the material cost was 132 yuan/t.The optimized formula of type B consolidation powder contained45% of fly ash,10%of cement clinker,12%of desulphurized gypsum and 33%of slag powder,and the material cost was 122 yuan/t.The strength of cementing backfill of two kinds of cementing materials with consolidation powder both met the strength requirement of cementing backfill in Huangtupo copper and zinc mine.The cost of cementing powder was 67.8%～70.2%lower than that of ordinary silicate cement.The application in Huangtupo mine showed that this cementing material had significant economic and environmental benefits.
In order to improve the economic benefit of copper and zinc mine in Huangtupo,experimental study on green filling cementing material of tailings aggregate with low cost was carried out by using the local cheap fly ash and slag solid waste resources.And the strength test of cementing material of fly ash-slag based consolidated powder was conducted with cementsand ratio of 1∶4 and slurry concentration of 74%.On this basis,two experiments were carried out to optimize the formulation of cementing powder with fly ash content of 40% and 45% respectively.The optimized formula of type A consolidation powder was obtained as follows:fly ash of 40%,cement clinker of 12%,desulphurization gypsum of 10% and slag powder of 38%,and the material cost was 132 yuan/t.The optimized formula of type B consolidation powder contained45% of fly ash,10%of cement clinker,12%of desulphurized gypsum and 33%of slag powder,and the material cost was 122 yuan/t.The strength of cementing backfill of two kinds of cementing materials with consolidation powder both met the strength requirement of cementing backfill in Huangtupo copper and zinc mine.The cost of cementing powder was 67.8%～70.2%lower than that of ordinary silicate cement.The application in Huangtupo mine showed that this cementing material had significant economic and environmental benefits.
引文
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[17]高谦,张光存,李茂辉,等.铁矿尾砂充填胶凝材料开发与脱硫灰利用研究分析[J].采矿技术,2013,13(3):28-31.
[18]杨志强,高谦,王永前,等.利用金川水淬镍渣尾砂开发新型充填胶凝剂试验研究[J].岩土工程学报,2014,36(8):1498-1506.
[19]杨志强,陈得信,高谦,等.棒磨砂-河砂-粉煤灰混合充填料配比试验研究[J].粉煤灰,2014(5):1-4.
[20]温楷,高谦,陈得信,王永定.磷石膏基胶凝材料充填体强度正交-BP神经网络模型研究[J].化工矿物与加工,2018,47(10):60-64+68.
[21]张光存.金川镍矿早强胶凝材料开发及充填料浆管输特性研究[D].北京:北京科技大学,2015.
[2]周爱民.中国充填技术概述[C]//中国有色金属学会·第八届国际充填采矿会议论文集.长沙:《矿业研究与开发》编辑部,2004:1-7.
[3]袁世伦,胡国斌,杨承祥.金属矿山充填技术的回顾与展望[J].有色金属科学与工程,2004,18(3):11-15.
[4]李雨波,王庆贤,吉晓佳,等.充填采矿新技术研究现状[C]//中国矿山“三率”管理与技术装备创新年会.长沙:中国有色金属学会采矿学术委员会,2015.
[5]Miao X,Feng J U,Huang Y,et al.New development and prospect of backfilling mining theory and technology[J].Journal of China University of Mining&Technology,2015,44(3):391-399+429.
[6]王凤波.全尾砂胶结充填工艺在马庄铁矿的应用[J].中国矿山工程,2008,37(5):23-24.
[7]Zhou H Q,Hou C J,Sun X K,et al.Solid Waste Paste Filling for None-Village-Relocation Coal Mining[J].Journal of China University of Mining&Technology,2004.
[8]王贤来,姚维信,王虎,等.矿山废石全尾砂充填研究现状与发展趋势[J].中国矿业,2011,20(9):76-79.
[9]华心祝.高水速凝材料泵送充填技术在我国煤矿的应用[J].矿业安全与环保,1996(3):34-36.
[10]候春华,杨志强,高谦,等.金川全尾砂棒磨砂新型充填胶凝材料试验研究[J].山东科技大学学报(自然科学版),2015,34(3):78-84.
[11]何环莎,高谦,魏微,等.全尾砂新型充填胶结材料性能试验和改进[J].矿业研究与开发,2012,32(4):11-22.
[12]高谦,张光存,李茂辉,等.铁矿尾砂充填胶凝材料开发与脱硫灰利用研究分析[J].采矿技术,2013,13(3):28-31.
[13]李茂辉.低活性水淬渣基早强充填胶凝材料开发与水化机理研究[D].北京:北京科技大学,2015.
[14]王强,杨志强,高谦.低活性酸性矿渣粉细度对胶结充填体早期强度的影响[J].中国粉体技术,2016(2):27-31.
[15]董璐,高谦,南世卿,等.超细全尾砂新型胶结充填料水化机理与性能[J].中南大学学报,2013,44(4):1571-1577.
[16]熊有为.基于半水磷石膏自胶凝充填材料膏体特性实验研究[J].矿业研究与开发,2018,38(1):15-19.
[17]高谦,张光存,李茂辉,等.铁矿尾砂充填胶凝材料开发与脱硫灰利用研究分析[J].采矿技术,2013,13(3):28-31.
[18]杨志强,高谦,王永前,等.利用金川水淬镍渣尾砂开发新型充填胶凝剂试验研究[J].岩土工程学报,2014,36(8):1498-1506.
[19]杨志强,陈得信,高谦,等.棒磨砂-河砂-粉煤灰混合充填料配比试验研究[J].粉煤灰,2014(5):1-4.
[20]温楷,高谦,陈得信,王永定.磷石膏基胶凝材料充填体强度正交-BP神经网络模型研究[J].化工矿物与加工,2018,47(10):60-64+68.
[21]张光存.金川镍矿早强胶凝材料开发及充填料浆管输特性研究[D].北京:北京科技大学,2015.