Articoli correlati a Particle Size Measurement
Sinossi
1 Sampling of powders.- 1.1 Introduction.- 1.2 Theory.- 1.3 Weight of sample required.- 1.4 Statistical considerations.- 1.5 Golden rules of sampling.- 1.6 Bulk sampling.- 1.6.1 Stored non-flowing material.- 1.6.2 Stored free-flowing material.- 1.6.3 Moving powders.- 1.6.4 Sampling from a moving stream of powder.- 1.6.5 Sampling from a conveyor belt or chute.- 1.6.6 Sampling from a bucket conveyor.- 1.6.7 Bag sampling.- 1.6.8 Sampling spears.- 1.6.9 Sampling from wagons and containers.- 1.6.10 Sampling from heaps.- 1.7 Slurry sampling.- 1.8 Sample dividing.- 1.8.1 Scoop sampling.- 1.8.2 Coning and quartering.- 1.8.3 Table sampling.- 1.8.4 Chute splitting.- 1.8.5 The spinning riffler.- 1.9 Miscellaneous devices.- 1.10 Reduction from laboratory sample to analysis sample.- 1.11 Reduction from analysis sample to measurement sample.- 1.12 Experimental tests of sample-splitting techniques.- 2 Sampling of dusty gases in gas streams.- 2.1 Introduction.- 2.2 Basic procedures.- 2.2.1 Sampling positions.- 2.2.2 Temperature and velocity surveys.- 2.2.3 Sampling points.- 2.3 Sampling equipment.- 2.3.1 Nozzles.- 2.3.2 Dust-sampling collector.- 2.3.3 Ancillary apparatus.- 2.3.4 On-line dust extraction.- 2.3.5 The Andersen stack sampler.- 2.4 Corrections for anisokinetic sampling.- 2.5 Probe orientation.- 2.6 Radiation methods.- 3 Sampling and sizing from the atmosphere.- 3.1 Introduction.- 3.2 Inertial techniques.- 3.3 Filtration.- 3.4 Electrostatic precipitation.- 3.5 Electrostatic charging and mobility.- 3.6 Thermal precipitation.- 3.7 The quartz microbalance.- 3.8 Optical sensing zone methods.- 3.8.1 Air Technology.- 3.8.2 Atcor Net 2000.- 3.8.3 Bausch and Lomb.- 3.8.4 Beckman.- 3.8.5 Centre for Air Environmental Studies.- 3.8.6 Climet Series 7000.- 3.8.7 Coulter Model 550 contamination monitor.- 3.8.8 Dynac.- 3.8.9 Gardner.- 3.8.10 G.C.A. Miniram.- 3.8.11 Insitec PCSV-P.- 3.8.12 Kratel Partoscope.- 3.8.13 Leitz Tyndalloscope.- 3.8.14 Met One particle counters.- 3.8.15 Pacific Scientific Hiac/Royco particle counting systems.- 3.8.16 Particle Measuring Systems.- 3.8.17 RAC particle monitors.- 3.8.18 Rotheroe and Mitchell digital dust indicator.- 3.8.19 Saab photometer.- 3.8.20 Sartorius.- 3.8.21 Sinclair.- 3.8.22 Techecology.- 3.8.23 TSI particle counters.- 3.8.24 The particulate volume monitor.- 3.9 Condensation nucleus counters.- 3.10 Diffusion battery.- 3.11 The aerodynamic particle size analyser.- 3.12 Miscellaneous techniques.- 4 Particle size, shape and distribution.- 4.1 Particle size.- 4.2 Particle shape.- 4.2.1 Shape coefficients.- 4.2.2 Shape factors.- 4.2.3 Applications of shape factors and shape coefficients.- 4.2.4 Shape indices.- 4.2.5 Shape regeneration by Fourier analysis.- 4.2.6 Fractal dimension characterization of textured surfaces.- 4.3 Determination of specific surface from size distribution data.- 4.3.1 Number distribution.- 4.3.2 Surface distribution.- 4.3.3 Volume distribution.- 4.4 Particle size distribution transformation between number, surface and mass.- 4.5 Average diameters.- 4.6 Particle dispersion.- 4.7 Methods of presenting size analysis data.- 4.8 Devices for representing the cumulative distribution curve as a straight line.- 4.8.1 Arithmetic normal distributions.- 4.8.2 The log-normal distribution.- 4.8.3 The Rosin-Rammler distribution.- 4.8.4 Mean particle sizes and specific surface evaluation for Rosin-Rammler distributions.- 4.8.5 Other particle size distribution equations.- 4.8.6 Simplification of two-parameter equations.- 4.8.7 Evaluation of non-linear distributions on log-normal paper.- 4.8.8 Derivation of shape factors from parallel log-normal curves.- 4.9 The law of compensating errors.- 4.10 Alternative notation for frequency distribution.- 4.10.1 Notation.- 4.10.2 Moment of a distribution.- 4.10.3 Transformation from qt(x) to qr(x).- 4.10.4 Relation between moments.- 4.10.5 Means of distributions.- 4.10.6 Standard deviations.- 4.10.7 Coefficient of variation.- 4.10.8 Applications.- 4.10.9 Transf
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