Particle Size Analysis by Sedimentation.
Abstract
Two methods of determining the size distribution of very fine powders by sedimentation in liquids are presented. Both methods result in a descriptive measure called the 'Stokesian diameter' of the particles which is based on the terminal velocity of particles in fluids as predicted by Stokes' law. One of the methods, gravity sedimentation using a recording balance, is useful in the nominal range of particle size of 5-100 microns. The second, photosedimentation, utilizes centrifugation to extend the range down to the area of 0.1 to 10 microns. Techniques of experimentation and methods of data reduction are discussed in detail for both methods. Complete computer programs for data analysis and sample outputs are included as appendices. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1971
- Accession Number
- AD0733324
Entities
People
- William Shelnutt
Organizations
- Air Force Research Laboratory