粉体研磨和分级设备的进展课件.ppt

1、国际粉体研磨和分级设备的进展国际粉体研磨和分级设备的进展Development of Comminution Equipment for Powder ProductionNew MillsnRoller millsnStirred media millsnVibration millsnCentrifugal millsnJet millsnOthersRoller MillsnHigh pressure roller mill(HPRM)(Germany)nPoittemill(POITTEMILL INGENIERIE,France)nHOROMILL(FCB research cent

2、re,France)Principle of High-pressure Roller MillReduction in Ball Mill(BM)Grind-ability as a Function of Specific Pressure of the HPRMnDependence of specific energy input on the f i n e n e s s o f r o u n d products obtained by stirred media mills with or without the HPRMAn Improved Version of the

3、HPRM With Splitter SettlingStructure of PoittemillConfiguration With One Idle Roller With a Cylinderical Shell in the HOROMILLGrinding Efficiencies of the HOROMILL Grinding Various MaterialsStirred Media MillsnSala Agitated Mill(SAM)(Svedala,Sweden)nIsaMill(Netzsch,Germany)nALPINE ATR Mill(Hosakawa

4、Alpine,Germany)nANI-Metprotech Stirred Vertical Mill(Metprotech,Australia)nMaxxMill(Eirich,Germany)nKD Tower Mill(Japan)nSome aspects on developments of stirred media millsSAM Mills in Wet and Dry ModesALPINE ATR Mill for Dry GrindingANI-Metprotech Stirred Vertical MillGeneral Design of MaxxMillKD-1

5、 tower mill and the modified versions KD-2 and KD-3Experimental results obtained by three KD mills for dry milling of calciteSome aspects on developments of stirred media millsnUse of smallest beadsnNew design for separation of beadsnAutogenous grinding nApplication of additional force fieldsUse of

6、smallest beadsnOne characteristic of stirred bead mills is to use the smaller beads(0.1 mm)as grinding media to effectively utilise the transmitted grinding energy in size reduction at high speeds.New design for separation of grinding media from ground productnDCP-Superflow(Draiswerke GmbH,Germany,n

7、ow Buhler)nZR120(Buhler AG,Switzerland)Construction of DCP-Superflow stirred bead millPrinciple of ZR120 centrifugal bead millAutogenous grinding in SBM Ultrafine grinding of limestoneApplication of additional force fieldsnCentrifugationnVibrationVibration MillsnEccentric vibrating mill(ESM)(Germany

8、)nVibroKinetic Energy(VKE)Mill(Micro Grinding Systems,USA)Construction of eccentric vibration mill(ESM)Comparsion of ESM and RSMVibroKinetic Energy(VKE)MillCentrifugal MillsnZRM centrifugal tube mill(Germany)nAachen centrifugal mill(Germany)ZRM 220-35 Centrifugal MillComparison Particle size distrib

9、utions as a function of specific energy inputAachen centrifugal ball mill Jet millsnOpposed jetmill(particle to particle)nImpact jetmill(in targets)nSpiral jetmill(high velocity differences)Others-Hicom mill(Hicom International,Warman Group,Australia)-MikroLGM Mill(Hosokawa Micron Powder system,USA)

10、-A cone crusher with high-pressure waterjet(Germany)Hicom mill in industrial applicationsSimplified process flowsheet including Hicom mill at Alexkor Ltd.,South AfricaSpecific energy for grinding calcite below 100 m to different sizesMikro-LGM(Ultrafine impact drying mill)Cone crusher with high-pres

11、sure waterjet(coal grinding)Product size-energy input relations from various mills in the case of milling CaCO3Mechanical Production of NanoparticlesnAl2O3nCaCO3nSiO2netcGrinding results(Al2O3)as a function of specific energy for different grinding beadsProduction of nano-particles by millingTEM pho

12、tograph of ground products of calciteImproved and New ClassifiersnAir classifiersnCentrifugesAir ClassifiersnTurboplex with new wheel design(Hosokawa Alpine,Germany)nV-and VSK-separators(KHD,Germany)nInprosys air classifier(SINTEF,Norway)New classifying wheel 500 ATP-NG for Turboplex air classifierP

13、ressure losses as a function of the product fineness comparison of the new classifying wheel and a standard classifying wheelSimulated air flow in VSK separatorSchematic drawing of the Inprosys air classifierCentrifugesnDisc-stack nozzle centrifuge(Alfa Laval,Sweden)nCentrisizer(KHD,Germany)nTU Clau

14、sthal centrifuge(Germany)nCounter-flow Rotating Hydro-classifier(TU Karlsruhe,Germany)A disc-stack nozzle centrifugeClassification performance plots of the disc centrifuge for both kaolin clay and calcite under various conditionsnResults for one stage classification by the disc centrifugeAn improved version of the decanter centrifuge“Centrisizer”Sketch of the TU Clausthal centrifugeCentrifugal classification of the starchComparison with various classifiersCounter-flow rotating hydro-classifier