废石-分级尾砂高浓度充填料浆的黏度及多因素影响规律
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摘要
黏度是表征料浆流动性与工作性的重要参数,为研究废石-分级尾砂高浓度充填料浆在多因素耦合条件下黏度的变化规律,开展了料浆流变实验,获取流变参数。应用响应曲面法分析黏度的主要影响因素及影响规律,研究结果表明:在多因素的耦合作用下,影响黏度的重要因素为细颗粒含量的变化,其次为料浆浓度的影响;料浆浓度增大时,黏度逐渐增大;黏度先随着细粒级的增加而减小,当细粒级含量到达一定范围后黏度达到最小,细粒级含量继续增多,黏度反而增加。在满足高浓度的前提下,料浆细粒级含量应控制在30%~34%,质量浓度小于84%。
Viscosity is an important parameter of slurry liquidity and workability.For getting the viscosity change rule of high density filling slurry with waste rock-tailings under the condition of multifactor,make rheological experiment,and obtain the rheological parameters.Response surface method is used to analyze the influence of fine fraction content on viscosity.The results show that the change of viscosity is basically consistent with the multi-factor coupling,and fine fraction content had great influences on the viscosity,mass concentration came second;when solid phase concentration increases,the viscosity of the slurry increases;viscosity decreases with the increase of fine particle level,and the viscosity reaches the minimum when the fine grain level reaches a certain range,and fine-grained content continues to increase,the viscosity too.On the premise of meeting high concentration,the fine content in slurry should be controlled in30%-34%,and mass concentration should be less than 84%.
Viscosity is an important parameter of slurry liquidity and workability.For getting the viscosity change rule of high density filling slurry with waste rock-tailings under the condition of multifactor,make rheological experiment,and obtain the rheological parameters.Response surface method is used to analyze the influence of fine fraction content on viscosity.The results show that the change of viscosity is basically consistent with the multi-factor coupling,and fine fraction content had great influences on the viscosity,mass concentration came second;when solid phase concentration increases,the viscosity of the slurry increases;viscosity decreases with the increase of fine particle level,and the viscosity reaches the minimum when the fine grain level reaches a certain range,and fine-grained content continues to increase,the viscosity too.On the premise of meeting high concentration,the fine content in slurry should be controlled in30%-34%,and mass concentration should be less than 84%.
引文
[1] MAVROV V,ERWE T,BIOCHER C,et al.Study of new integratedprocessescombiningadsorptionmembrane separation and flotation for heavy metal removal from waste water[J].Desalination,2003,157(1-3):97-104.
[2] CLAVERIA I,JAVIERRE C,PONZ L. Method for generation of rheological model to characterize nonconventional injection molding by means of spiral mold[J].Journal of Materials Processing Technology,2005,162-163:477-483.
[3]曾远宏.水泥砂浆的流变性能研究和流变参数预测[D].重庆:重庆大学,2009.
[4]刘浪.矿山充填膏体配比优化与流动特性研究[D].长沙:中南大学,2013.
[5] BECKER M,YORATH G,NDLOVU B,et al.A rheological investigation of the behaviour of two Southern African platinum ores[J].Minerals Engineering,2013,49:92-97.
[6] WU D,FALL M,CAI S J.Coupling temperature,cement hydration and rheological behaviour of fresh cemented paste backfill[J].Minerals Engineering,2013,42:76-87.
[7]翟永刚.全尾砂-水淬渣充填膏体管道自流输送阻力研究[D].北京:北京科技大学,2011.
[8]杨志强,高谦,王永前,等.金川镍矿尾砂膏体充填采矿技术进步与展望[J].徐州工程学院学报:自然科学版,2014,29(3):1-8.
[9]刘同有,金铭良,周成浦.中国镍矿一金川高浓度充填料浆管道自流输送新工艺[J].中国矿业,1998,7(1):31-44.
[10]胡华,孙恒虎,黄玉诚,等.似膏体粘弹塑性流变模型与流变方程研究[J].中国矿业大学学报,2003,32(2):119-122.
[11]胡华,孙恒虎,黄玉诚.似膏体充填料浆流变特性及其多因素影响分析[J].有色金属:矿山部分,2005,14(10):45-48.
[12]翟永刚,吴爱祥,王洪江,等.全尾砂膏体料浆的流变特性研究[J].金属矿山,2010(12):30-32.
[13]孙伟,吴爱祥,王洪江,等.全尾砂-废石混合回填膏体流动特性变化规律[J].岩土力学,2013,34(12):3464-3470.
[14] HE M,WANG Y,FORSSBERG E.Slury rheology in wet ultrafine grinding of industrial minerals:a review[J].Powder Technology,2004,147(1):94-112.
[15] JEWELL R J,FOURIE A B.Paste and Thickened Tailings:A Guide[R].2006.
[16]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,2014.
[17]张修香,乔登攀,孙宏生,等.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.
[2] CLAVERIA I,JAVIERRE C,PONZ L. Method for generation of rheological model to characterize nonconventional injection molding by means of spiral mold[J].Journal of Materials Processing Technology,2005,162-163:477-483.
[3]曾远宏.水泥砂浆的流变性能研究和流变参数预测[D].重庆:重庆大学,2009.
[4]刘浪.矿山充填膏体配比优化与流动特性研究[D].长沙:中南大学,2013.
[5] BECKER M,YORATH G,NDLOVU B,et al.A rheological investigation of the behaviour of two Southern African platinum ores[J].Minerals Engineering,2013,49:92-97.
[6] WU D,FALL M,CAI S J.Coupling temperature,cement hydration and rheological behaviour of fresh cemented paste backfill[J].Minerals Engineering,2013,42:76-87.
[7]翟永刚.全尾砂-水淬渣充填膏体管道自流输送阻力研究[D].北京:北京科技大学,2011.
[8]杨志强,高谦,王永前,等.金川镍矿尾砂膏体充填采矿技术进步与展望[J].徐州工程学院学报:自然科学版,2014,29(3):1-8.
[9]刘同有,金铭良,周成浦.中国镍矿一金川高浓度充填料浆管道自流输送新工艺[J].中国矿业,1998,7(1):31-44.
[10]胡华,孙恒虎,黄玉诚,等.似膏体粘弹塑性流变模型与流变方程研究[J].中国矿业大学学报,2003,32(2):119-122.
[11]胡华,孙恒虎,黄玉诚.似膏体充填料浆流变特性及其多因素影响分析[J].有色金属:矿山部分,2005,14(10):45-48.
[12]翟永刚,吴爱祥,王洪江,等.全尾砂膏体料浆的流变特性研究[J].金属矿山,2010(12):30-32.
[13]孙伟,吴爱祥,王洪江,等.全尾砂-废石混合回填膏体流动特性变化规律[J].岩土力学,2013,34(12):3464-3470.
[14] HE M,WANG Y,FORSSBERG E.Slury rheology in wet ultrafine grinding of industrial minerals:a review[J].Powder Technology,2004,147(1):94-112.
[15] JEWELL R J,FOURIE A B.Paste and Thickened Tailings:A Guide[R].2006.
[16]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,2014.
[17]张修香,乔登攀,孙宏生,等.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.