废石-尾砂高浓度料浆管道输送特性模拟
|
摘要
废石-尾砂高浓度充填是解决矿山废尾排放的最有效途径,也是实现绿色采矿的主体支撑技术之一。管道输送特性作为高浓度料浆管道输送的核心内容具有重要的研究意义。本文将矿山实际充填管路进行还原,应用Fluent软件进行输送模拟研究,重点以速度、质量浓度对管道自流输送特性及弯管部位的影响进行分析。结果表明:随着速度的增加,管道的阻力损失呈指数增长,弯管底部受到的压力最大。当料浆速度达到2.8 m/s,料浆浓度为85%时,浆料无法自流;当料浆速度超过3.0 m/s时,阻力损失增长变快;当料浆速度达到3.2 m/s,料浆浓度达到84%时,浆料无法自流,也会出现滞留现象,造成堵管。适合高浓度管道自流输送的料浆浓度为83%～84%。通过半工业实验及矿山实际阻力监测,验证了数值模拟结果的可靠性。
It is the most effective way to solve waste rock-tailing emissions and is one of main support techniques to realize the green mining that high-density slurry with waste rock and tailing. Pipeline characteristics has an important research significance as the core content of pipeline transportation about high-density slurry. This article reduced the mine actual filling line, the pipeline simulation research was conducted using Fluent software, the effects of velocity/quality concentration on the characteristics of gravity and bending parts were analyzed. The results show that the pipe resistance losses increase exponentially with the increase of flow velocity, the bottom of the pipe bending has the most pressure.When the velocity is more than 3.0 m/s, the resistance loss grows faster. When the velocity reaches 2.8 m/s, the slurry is not able to self-flow when the slurry concentration is 85%, when the velocity reaches 3.2 m/s, the concentration is 84%,which cannot be self-flowing, and the retention phenomenon occurs, causing the plugging pipe. It is suitable for pipe flow that the concentration of high density slurry is 83%-84%. Semi-industrial experiments and actual resistance monitoring verify the reliability of numerical simulation results in mines.
It is the most effective way to solve waste rock-tailing emissions and is one of main support techniques to realize the green mining that high-density slurry with waste rock and tailing. Pipeline characteristics has an important research significance as the core content of pipeline transportation about high-density slurry. This article reduced the mine actual filling line, the pipeline simulation research was conducted using Fluent software, the effects of velocity/quality concentration on the characteristics of gravity and bending parts were analyzed. The results show that the pipe resistance losses increase exponentially with the increase of flow velocity, the bottom of the pipe bending has the most pressure.When the velocity is more than 3.0 m/s, the resistance loss grows faster. When the velocity reaches 2.8 m/s, the slurry is not able to self-flow when the slurry concentration is 85%, when the velocity reaches 3.2 m/s, the concentration is 84%,which cannot be self-flowing, and the retention phenomenon occurs, causing the plugging pipe. It is suitable for pipe flow that the concentration of high density slurry is 83%-84%. Semi-industrial experiments and actual resistance monitoring verify the reliability of numerical simulation results in mines.
引文
[1]吴爱祥,王勇,王洪江.膏体充填技术现状及趋势[J].金属矿山,2016(7):1-9.WU Ai-xiang,WANG Yong,WANG Hong-jiang.Status and prospects of the paste backfill technology[J].Metal Mine,2016(7):1-9.
[2]董慧珍,冯国瑞,郭育霞,戚庭野,康立勋,郭晓彦,韩玉林.新阳矿充填料浆管道输送特性的试验研究[J].采矿与安全工程学报,2013,30(6):880-885.DONG Hui-zhen,FENG Guo-rui,GUO Yu-xia,QI Ting-ye,KANG Li-xun,GUO Xiao-yan,HAN Yu-lin.Pipe transportation characteristics of filling slurry in Xinyang mine[J].Journal of Mining&Safety Engineering,2013,30(6):880-885.
[3]刘晓辉.膏体流变行为及其管流阻力特性研究[D].北京:北京科技大学,2015.LIU Xiao-hui.Study on rheological behavior and pipe flow resistance of paste backfill[D].Beijing:University of Science&Technology Beijing,2015.
[4]何哲祥,隋利军,解伟.矿山充填料管道挤压输送计算机模拟[J].中南大学学报(自然科学版),2008,39(6):1144-1151.HE Zhe-xiang,SUI Li-jun,XIE Wei.Computer simulation of squeezed-transport of mine hydraulic filling in pipeline[J].Journal of Central South University(Science and Technology),2008,39(6):1144-1151.
[5]韩占忠,王敬,兰小平.FLUENT-流体工程仿真计算机实例与应用[M].北京:北京理工大学出版社,2010.HANG Zhan-zhong,WANG Jing,LAN Xiao-ping.FLUENTsimulation computer instances and application[M].Beijing:Beijing Institute Technology Press,2010.
[6]甘德清,高锋,陈超,刘爱兴,张云鹏.高浓度全尾砂料浆管道输送数值模拟研究[J].金属矿山,2014(10):138-141.GAN De-qing,GAO Feng,CHEN Chao,LIU Ai-xing,ZHANGYun-peng.Numerical simulation study of high density total tailings slurry pipeline transport[J].Metal Mine,2014(10):138-141.
[7]刘杰,赵奎,许杨东,何文,钟文,陈康.基于L型管道料浆输送性能试验研究[J].矿业研究与开发,2016,36(2):100-104.LIU Jie,ZHAO Kui,XU Yang-dong,HE Wen,ZHONG Wen,CHENG Kang.Experimental research on the transportation performance of the filling slurry based on the L-shaped pipeline[J].Mining Research and Development,2016,36(2):100-104.
[8]邓代强,朱永建,王发芝,王莉,余伟健.充填料浆长距离管道输送数值模拟[J].安徽大学学报(自然科学版),2012,36(6):36-43.DENG Dai-qiang,ZHU Yong-jian,WANG Fa-zhi.WANG Li.YU Wei-jian.Transportation numerical simulation of filling slurry in long distance pipeline[J].Journal of Anhui University(Natural Science Edition),2012,36(6):36-43.
[9]WANG X M,ZHAO J W,XUE J H,YU G F.Features of pipe transportation of paste-like backfilling in deep mine[J].Journal of Central South University of Technology,2011,18(5):1413-1417.
[10]吴迪,蔡嗣经,杨威,王文潇,王章.基于CFD的充填管道固-液两相流输送模拟及实验[J].中国有色金属学报,2012,22(7):2133-2140.WU Di,CAI Si-jing,YANG Wei,WANG Wen-xiao,WANGZhang.Simulation and experiment of backfilling pipeline transportation of solid-liquid two-phase flow based on CFD[J].The Chinese Journal of Nonferrous Metals,2012,22(7):2133-2140.
[11]温震江,高谦,王忠红,游化.基于FLUENT的全尾砂充填料浆输送特性模拟与分析[J].化工矿物与加工,2017(9):54-58.WEN Zhen-jiang,GAO Qian,WANG Zhong-hong,YOU Hua.Simulation test and analysis of full tailings filling slurry transportation characteristics based on FLUENT[J].Industrial Minerals&Processing,2017(9):54-58.
[12]陈新,史秀志,周健,邱贤阳,吝学飞.泡沫砂浆W型管长距离输送特性的CFD模拟[J].中国有色金属学报,2016,26(8):1782-1793.CHEN Xin,SHI Xiu-zhi,ZHOU Jian,QIU Xian-yang,LINXue-fei.CFD simulation of transportation properties of W type and long-distance pipeline for foam slurry backfilling[J].The Chinese Journal of Nonferrous Metals,2016,26(8):1782-1793.
[13]丁璐,陶能,梅甫定.磷石膏基充填料浆长距离管道输送特性研究[J].安全与环境工程,2016,23(4):68-73.DING Lu,TAO Neng,MEI Fu-ding.Investigation into the behavior of long-distance pipeline transport of ardealite-based filler slurry[J].Safety and Environmental Engineering,2016,23(4):68-73.
[14]张亮,罗涛,许杨东,陈忠熙,刘杰.高浓度充填料浆流变特性及其管道输送模拟优化研究[J].矿业研究与开发,2016,36(4):36-41.ZHANG Liang,LUO Tao,XU Yang-dong,CHEN Zhong-xi,LIU Jie.Research on the rheological characteristics of high-concentration filling slurry and the simulation and optimization on its pipeline transportation[J].Mining Research and Development,2016,36(4):36-41.
[15]张钦礼,刘奇,赵建文,刘贱刚.深井似膏体充填管道的输送特性[J].中国有色金属学报,2015,25(11):3190-3195.ZHANG Qi-li,LIU Qi,ZHAO Jian-wen,LIU Jian-gang.Pipeline transportation characteristics of filling paste-like slurry pipeline in deep mine[J].The Chinese Journal of Nonferrous Metals,2015,25(11):3190-3195.
[16]YU G B,YANG P,CHEN Z C,MEN R Y.Study on pipeline self-flowing transportation of cemented tailing fill slurry based on FLUENT software[J].Advanced Materials Research,2013,734/737:833-837.
[17]KUMAR A,KAUSHAL D R,KUMAR U.3D CFD modeling and experimental validation for slurry flow through pipe bend[J].Biennial Conference on Engineering Systems Design and Analysis,2008,7:105-110.
[18]KAUSHAL D R,THINGLAS T,TOMITA Y,KUCHII S,TSUKAMOTO H.CFD modeling for pipeline flow of fine particles at high concentration[J].International Journal of Multiphase Flow,2012,43:85-100.
[19]姚维信.矿山粗骨料高浓度充填理论研究与应用[D].昆明:昆明理工大学,2011.YAO Wei-xin.Study on the filling theory of high-density with coarse aggregate and application[D].Kunming:Kunming University of Science and Technology,2012:53-62.
[20]刘凯.全尾砂充填空区的脱水试验研究[D].昆明:昆明理工大学,2009.LIU Kai.A study on the dehydration of tailings filling area[D].Kunming:Kunming University of Science and Technology,2009.
[21]张修香,乔登攀,孙宏生,杨兴宏,卢光远,李广涛.大红山铜矿粗骨料充填料浆的高浓度判定[J].昆明理工大学学报(自然科学版),2014,39(6):32-39.ZHANG Xiu-xiang,QIAO Deng-pan,SUN Hong-sheng,YANGXing-hong,LU Guang-yuan,LI Guang-tao.High density criterion of filling slurry with coarse aggregates for Dahongshan copper[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2014,39(6):32-39.
[2]董慧珍,冯国瑞,郭育霞,戚庭野,康立勋,郭晓彦,韩玉林.新阳矿充填料浆管道输送特性的试验研究[J].采矿与安全工程学报,2013,30(6):880-885.DONG Hui-zhen,FENG Guo-rui,GUO Yu-xia,QI Ting-ye,KANG Li-xun,GUO Xiao-yan,HAN Yu-lin.Pipe transportation characteristics of filling slurry in Xinyang mine[J].Journal of Mining&Safety Engineering,2013,30(6):880-885.
[3]刘晓辉.膏体流变行为及其管流阻力特性研究[D].北京:北京科技大学,2015.LIU Xiao-hui.Study on rheological behavior and pipe flow resistance of paste backfill[D].Beijing:University of Science&Technology Beijing,2015.
[4]何哲祥,隋利军,解伟.矿山充填料管道挤压输送计算机模拟[J].中南大学学报(自然科学版),2008,39(6):1144-1151.HE Zhe-xiang,SUI Li-jun,XIE Wei.Computer simulation of squeezed-transport of mine hydraulic filling in pipeline[J].Journal of Central South University(Science and Technology),2008,39(6):1144-1151.
[5]韩占忠,王敬,兰小平.FLUENT-流体工程仿真计算机实例与应用[M].北京:北京理工大学出版社,2010.HANG Zhan-zhong,WANG Jing,LAN Xiao-ping.FLUENTsimulation computer instances and application[M].Beijing:Beijing Institute Technology Press,2010.
[6]甘德清,高锋,陈超,刘爱兴,张云鹏.高浓度全尾砂料浆管道输送数值模拟研究[J].金属矿山,2014(10):138-141.GAN De-qing,GAO Feng,CHEN Chao,LIU Ai-xing,ZHANGYun-peng.Numerical simulation study of high density total tailings slurry pipeline transport[J].Metal Mine,2014(10):138-141.
[7]刘杰,赵奎,许杨东,何文,钟文,陈康.基于L型管道料浆输送性能试验研究[J].矿业研究与开发,2016,36(2):100-104.LIU Jie,ZHAO Kui,XU Yang-dong,HE Wen,ZHONG Wen,CHENG Kang.Experimental research on the transportation performance of the filling slurry based on the L-shaped pipeline[J].Mining Research and Development,2016,36(2):100-104.
[8]邓代强,朱永建,王发芝,王莉,余伟健.充填料浆长距离管道输送数值模拟[J].安徽大学学报(自然科学版),2012,36(6):36-43.DENG Dai-qiang,ZHU Yong-jian,WANG Fa-zhi.WANG Li.YU Wei-jian.Transportation numerical simulation of filling slurry in long distance pipeline[J].Journal of Anhui University(Natural Science Edition),2012,36(6):36-43.
[9]WANG X M,ZHAO J W,XUE J H,YU G F.Features of pipe transportation of paste-like backfilling in deep mine[J].Journal of Central South University of Technology,2011,18(5):1413-1417.
[10]吴迪,蔡嗣经,杨威,王文潇,王章.基于CFD的充填管道固-液两相流输送模拟及实验[J].中国有色金属学报,2012,22(7):2133-2140.WU Di,CAI Si-jing,YANG Wei,WANG Wen-xiao,WANGZhang.Simulation and experiment of backfilling pipeline transportation of solid-liquid two-phase flow based on CFD[J].The Chinese Journal of Nonferrous Metals,2012,22(7):2133-2140.
[11]温震江,高谦,王忠红,游化.基于FLUENT的全尾砂充填料浆输送特性模拟与分析[J].化工矿物与加工,2017(9):54-58.WEN Zhen-jiang,GAO Qian,WANG Zhong-hong,YOU Hua.Simulation test and analysis of full tailings filling slurry transportation characteristics based on FLUENT[J].Industrial Minerals&Processing,2017(9):54-58.
[12]陈新,史秀志,周健,邱贤阳,吝学飞.泡沫砂浆W型管长距离输送特性的CFD模拟[J].中国有色金属学报,2016,26(8):1782-1793.CHEN Xin,SHI Xiu-zhi,ZHOU Jian,QIU Xian-yang,LINXue-fei.CFD simulation of transportation properties of W type and long-distance pipeline for foam slurry backfilling[J].The Chinese Journal of Nonferrous Metals,2016,26(8):1782-1793.
[13]丁璐,陶能,梅甫定.磷石膏基充填料浆长距离管道输送特性研究[J].安全与环境工程,2016,23(4):68-73.DING Lu,TAO Neng,MEI Fu-ding.Investigation into the behavior of long-distance pipeline transport of ardealite-based filler slurry[J].Safety and Environmental Engineering,2016,23(4):68-73.
[14]张亮,罗涛,许杨东,陈忠熙,刘杰.高浓度充填料浆流变特性及其管道输送模拟优化研究[J].矿业研究与开发,2016,36(4):36-41.ZHANG Liang,LUO Tao,XU Yang-dong,CHEN Zhong-xi,LIU Jie.Research on the rheological characteristics of high-concentration filling slurry and the simulation and optimization on its pipeline transportation[J].Mining Research and Development,2016,36(4):36-41.
[15]张钦礼,刘奇,赵建文,刘贱刚.深井似膏体充填管道的输送特性[J].中国有色金属学报,2015,25(11):3190-3195.ZHANG Qi-li,LIU Qi,ZHAO Jian-wen,LIU Jian-gang.Pipeline transportation characteristics of filling paste-like slurry pipeline in deep mine[J].The Chinese Journal of Nonferrous Metals,2015,25(11):3190-3195.
[16]YU G B,YANG P,CHEN Z C,MEN R Y.Study on pipeline self-flowing transportation of cemented tailing fill slurry based on FLUENT software[J].Advanced Materials Research,2013,734/737:833-837.
[17]KUMAR A,KAUSHAL D R,KUMAR U.3D CFD modeling and experimental validation for slurry flow through pipe bend[J].Biennial Conference on Engineering Systems Design and Analysis,2008,7:105-110.
[18]KAUSHAL D R,THINGLAS T,TOMITA Y,KUCHII S,TSUKAMOTO H.CFD modeling for pipeline flow of fine particles at high concentration[J].International Journal of Multiphase Flow,2012,43:85-100.
[19]姚维信.矿山粗骨料高浓度充填理论研究与应用[D].昆明:昆明理工大学,2011.YAO Wei-xin.Study on the filling theory of high-density with coarse aggregate and application[D].Kunming:Kunming University of Science and Technology,2012:53-62.
[20]刘凯.全尾砂充填空区的脱水试验研究[D].昆明:昆明理工大学,2009.LIU Kai.A study on the dehydration of tailings filling area[D].Kunming:Kunming University of Science and Technology,2009.
[21]张修香,乔登攀,孙宏生,杨兴宏,卢光远,李广涛.大红山铜矿粗骨料充填料浆的高浓度判定[J].昆明理工大学学报(自然科学版),2014,39(6):32-39.ZHANG Xiu-xiang,QIAO Deng-pan,SUN Hong-sheng,YANGXing-hong,LU Guang-yuan,LI Guang-tao.High density criterion of filling slurry with coarse aggregates for Dahongshan copper[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2014,39(6):32-39.