a study on fine grinding process in jet mill - ePrints@USM

More documents

Recommendations

Info

P Grinding pressure LIST OF SYMBOLS N Classifier rotational speed ρ density B half width θ the Bragg angle of (h k l) reflection ε lattice strain D crystallite size C crystallinity index BBo background of the feed B background of the ground samples Io integral intensities of diffraction lines for feed I integral intensities of diffraction lines for ground samples Am amorphous fraction Ao areas under the prominent plane for feed A areas under the prominent plane for ground sample Hh Hc height of holdup the distance between surface of holdup and classifier x distance between top of grinding-classifying chamber and surface x of holdup average value n number of samples xi data collected d(4.3) Volume moment diameter d50 xk dk Mean particle size number percentage of detected diameter detected diameter xviii
ψ span values di Kα βf βh βg Dv i% smaller than K constant spectral line for an element integral breadths of the instrumental integral breadths observed integral breadths of measured profile volume weighted mean of the crystallite size θ Bragg angle of (h k l) reflection λ wavelength of X-rays used ε lattice strain r rotor radius vϕ vr xc ρs circumferential velocity radial velocity cut size density of solids η dynamics viscosity R maximum reduction ratio ( 4. 3) max f d . 3 4 volume moment diameter of feed p d . 3 4 volume moment diameter of ground product Absn Ekinetic mg Absorption at wavelength n kinetic energy mass of gas v gas velocity ϕ gas constant P gas pressure xix
Page 1 and 2: A STUDY ON ULTRA FINE GRINDING OF S
Page 3 and 4: CONTENTS Page Number ACKNOWLEDGEMEN
Page 5 and 6: Chapter 3 METHODOLOGY 3.1 Introduct
Page 7 and 8: REFERENCES 178 APPENDIX 1 : Volume
Page 9 and 10: Table 4.4 Table 4.5 Table 4.6 Table
Page 11 and 12: (●), 9000 rpm unsteady (○), 110
Page 13 and 14: Figure 3.4 Schematic diagram of gri
Page 15 and 16: Figure 4.24 Figure 4.25 Figure 4.26
Page 17: Rj rupture of joints CI cleavage Ch
Page 21 and 22: LIST OF PUBLICATION Samayamutthiria
Page 23 and 24: A Study on Ultra Fine Grinding of S
Page 25 and 26: 1.0 Introduction CHAPTER 1 The scop
Page 27 and 28: Although fine grinding will induce
Page 29 and 30: on the particle should be higher th
Page 31 and 32: eakage mechanism are controlled by
Page 33 and 34: operating parameters will be studie
Page 35 and 36: particles and it takes place simult
Page 37 and 38: Table 2.1: Key physical properties
Page 39 and 40: grinding soft materials such as sof
Page 41 and 42: Nozzle Nozzle Classifier Nozzle Mov
Page 43 and 44: Table 2.3: Application of jet mill
Page 45 and 46: (Berthiaux and Dodds, 1999; Tasirin
Page 47 and 48: The circularity (C) is a measure of

a study on fine grinding process in jet mill - ePrints@USM

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?