47、 done to study how varying different parameters affects the motion of the screen.Kinema- tics parameters of the vibrating screen that motion traces are linear,circular or elliptical are obtained.3 Motion traces of total vibrating screen were gained through computer simulations.Screening technologica 。

48、l parameters,including amplitude, velocity and throwing index,of five specific points along the screen surface were calculated. Theseparameters are related to screening efficiency. The results show that the motion pattern of the designed vibrating screen conforms to an ideal screening motion and tha 。

49、t the design is able to effectively improve screening efficiency.4The position of the exciter axle center,relative to the center of gravity of the vibrating screen,is extremely important for screening efficient.Thus,we can design a vibrating screen with higher processing capacity without increasing。

50、power consumption by adjusting the relative position of the axle center.This is a point that requires further study.References1Wen B C,Liu F Q.Theory and Application of Vibration Machines.Beijing:China Machine Press,1982.2Gu Q B,Zhang E G.Study on complex-locus vibration screen.Mining&Processing Equ 。

51、ipment,19981:42?46.3Hao F Y.Coal Preparation Manual:Technology and Equipment.Beijing:China Coal Industry Publishing House,1993.4Yan F.Screening Machines.Beijing:China Coal Indus-try Publishing House,1995.5Liu C S,Zhao Y M.Study on nonlinear characteristics of single particle on screening surface.Min 。

52、ing&Processing Equipment,19991:45?486Tao Y J,Luo Z F,Zhao Y M.Experimental research on desulfurization of fine coal using an enhanced centri- fugal gravity separator.Journal of China University ofMining&Technology,2006,164:399?403.7Zhang E G.Screening,Crushing and Dewatering Equipments. Beijing: Chi 。

53、na Coal Industry Publishing House,1991.8 Khoury D L.Coal Cleaning Technology .USA:Noyes Data Corporation,1981.9Shang N X,Na J F.2TYA1842 elliptical vibration screen. Mining&Processing Equipment,19902:20?24 10YeHD.Elliptical isopachous screening technology andits application.Sintering and Palletizing 。

54、,1999,53:30?33.11Wen B C,Liu S Y,He Q.Theory and Dynamic Design Method of Vibration Machines.Beijing:China Machine Press,2001. 12Wang F,Wang H.Screening Machines.Beijing:China Machine Press,2001.13Ni Z H.Vibration Mechanics.Xian:Xian Jiaotong University Press,1989.14Zhu W B.Working principle and com 。

55、puter simulation of vibrating screen with complicated motion trace.Mining &Processing Equipment,200410:34?36.15Peder M.The mogensen E-series?a new screening oncept.Mineral Processing,1996,737:311?315.16Wen B C.Synchronization theory of self-synchronous vibrating machines with ellipse motion locus. Boston:American Society of Mechanical Engineers,1987:495?500. 。

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