静载荷下含稀土磷矿石颗粒的破裂过程数值模拟
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摘要
应用岩石破裂过程分析系统RFPA2D建立贵州织金含稀土磷矿石颗粒的数值模型,分析探讨了静载荷作用下不同约束条件对含稀土磷矿石颗粒试样的破碎效果和能量消耗的影响。数值模拟结果表明:水平方向有约束时含稀土磷矿石颗粒试样累计破坏单元数比无水平约束时少,且释放的能量比无水平约束时多。因此,为了获得较好的破碎效率和节能效果,在选择破碎机时要考虑破碎腔内含稀土磷矿石颗粒的约束状态。
Using the Rock Failure Process Analysis code(RFPA2D),numerical model on particle failure was built to investigate the failure process of phosphate ore particle containing rare-earth in Guizhou under static loading,and the influence of different confinement on crushing effect and energy consumption of Zhijin phosphate ore particle containing rare-earth was analyzed.Numerical simulation results indicated that comparing to diametral loading without confinement in the horizontal direction,the accumulated counts of damaged elements of particle with confinement in the horizontal direction were less,and the energy release of damaged elements of particle was more.Therefore,in order to obtain higher crushing efficiency and better energy saving,the confinement of phosphate ore particle containing rare-earth in chamber should be taken into account in selecting crushers.
Using the Rock Failure Process Analysis code(RFPA2D),numerical model on particle failure was built to investigate the failure process of phosphate ore particle containing rare-earth in Guizhou under static loading,and the influence of different confinement on crushing effect and energy consumption of Zhijin phosphate ore particle containing rare-earth was analyzed.Numerical simulation results indicated that comparing to diametral loading without confinement in the horizontal direction,the accumulated counts of damaged elements of particle with confinement in the horizontal direction were less,and the energy release of damaged elements of particle was more.Therefore,in order to obtain higher crushing efficiency and better energy saving,the confinement of phosphate ore particle containing rare-earth in chamber should be taken into account in selecting crushers.
引文
[1]C.A.Tang,X.H.Xu,etc.Numerical investigation of parti-cle breakage as applied to mechanical crushing[J].InternationalJournal of Rock Mechanics and Mining Sciences,2001:1147-1162.
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[3]Vutukri VS,Lama RD,Saluja SS.Handbook on mechanicalproperties of rocks[M].Trans Technical Publications,1974,87-140.
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[5]唐春安.岩石声发射规律数值模拟初探[J].岩石力学与工程学报,1997,16(2):368-374.
[6]Tang C A.Numerical simulation on progressive failure lead-ing to collapse and associated seismicity[J].International Journalof Rock Mechanics and Mining Science,1997,34(2):249-261.
[7]唐春安,赵文.岩石破裂全过程分析软件系统RFPA2D[J].岩石力学与工程学报,1997,16(5):507-508。
[8]崔维成.复合材料结构破坏过程的计算机模拟[J].复合材料学报,1996,13(4):102-111.
[9]黄明利,唐春安,朱万成.岩石破裂过程的数值模拟和研究[J].岩石力学与工程学报,2000,19(4):468-471.
[10]唐春安,傅宇方,赵文.震源孕育模式的数值模拟研究[J].地震学报,1997,19(4):337-346.
[11]朱万成,唐春安.岩板中混合裂纹扩展过程的数值模拟[J].岩土工程学报,2000,22(2):231-234.
[12]朱万成.混凝土断裂过程的细观数值模型及其应用[博士学位论文][D].沈阳东北大学,2000.
[2]Tsoungui O,Vallet D,Charmet JC.Numerical model ofcrushing of grains inside two-dimensional granular materials[J].Powder Technology,1999,105:190-198.
[3]Vutukri VS,Lama RD,Saluja SS.Handbook on mechanicalproperties of rocks[M].Trans Technical Publications,1974,87-140.
[4]张覃,张杰,等.含稀土磷矿石可磨性试验研究[J].化工矿物与加工,2002,(12):8-9.
[5]唐春安.岩石声发射规律数值模拟初探[J].岩石力学与工程学报,1997,16(2):368-374.
[6]Tang C A.Numerical simulation on progressive failure lead-ing to collapse and associated seismicity[J].International Journalof Rock Mechanics and Mining Science,1997,34(2):249-261.
[7]唐春安,赵文.岩石破裂全过程分析软件系统RFPA2D[J].岩石力学与工程学报,1997,16(5):507-508。
[8]崔维成.复合材料结构破坏过程的计算机模拟[J].复合材料学报,1996,13(4):102-111.
[9]黄明利,唐春安,朱万成.岩石破裂过程的数值模拟和研究[J].岩石力学与工程学报,2000,19(4):468-471.
[10]唐春安,傅宇方,赵文.震源孕育模式的数值模拟研究[J].地震学报,1997,19(4):337-346.
[11]朱万成,唐春安.岩板中混合裂纹扩展过程的数值模拟[J].岩土工程学报,2000,22(2):231-234.
[12]朱万成.混凝土断裂过程的细观数值模型及其应用[博士学位论文][D].沈阳东北大学,2000.
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