Particle Size Analysis and Characterization of a Classification Process
Kurt Leschonski · Ullmann's Encyclopedia of Industrial Chemistry · 2000
The article contains sections titled: 1. Introduction 2. Graphic Representation 2.1. Particle Characteristics and Types and Measures of Quantity 2.2. Cumulative and Density Distributions 2.3. Distribution Functions 2.4. Calculation of Specific Surface Area 3. Characterization of a Classification or Separation Process 3.1. Classification Based on Error-Free Distribution Curves and Mass Balances 3.1.1. Density and Cumulative Distribution Curves 3.1.2. Mass Balances 3.1.3. Indirect Evaluation of v1 and v2 3.1.4. Cut Size 3.1.5. Grade Efficiency Curve (Tromp's Curve) 3.1.6. Sharpness of Cut and Other Parameters 3.2. Influence of Stochastic Errors 3.2.1. Indirect Evaluation of v1 and v2 3.2.2. Evaluation of the Grade Efficiency Curve, T (x) 3.3. Influence of Systematic Errors 3.3.1. Splitting in the Classifier 3.3.2. Incomplete Dispersion of the Feed Material 3.3.3. Comminution in the Classifier 4. Sample Splitting 5. Sedimentation Analysis 5.1. Calculation of the Equivalent Settling Rate Diameter, xw 5.2. Methods of Sedimentation Analysis 5.2.1. Suspension Techniques 5.2.2. Superimposed Layer Techniques 6. Classification Methods 6.1. Sieve Analysis 6.2. Air Classification 6.2.1. Cross-flow Classifiers 6.2.2. Counterflow Classifiers 7. Counting Methods 7.1. Image Analysis 7.2. Electrical Sensing Zone Method 7.3. Measurement by Light Scattering or Absorption 8. Fraunhofer Diffraction