A method of measuring the surface area of granular material
Article first published online: 21 FEB 2011
Copyright © 1961 Canadian Society for Chemical Engineering
The Canadian Journal of Chemical Engineering
Volume 39, Issue 1, pages 49–51, February 1961
How to Cite
Hedlin, C. P. and Collins, S. H. (1961), A method of measuring the surface area of granular material. Can. J. Chem. Eng., 39: 49–51. doi: 10.1002/cjce.5450390111
- Issue published online: 21 FEB 2011
- Article first published online: 21 FEB 2011
- Manuscript Accepted: 21 OCT 1960
- Manuscript Received: 6 JAN 1960
- Department of Engineering Science, Ontario Agricultural College, Guelph, Ont.
A method is described which permits measurement of the exterior surface areas of objects down to about 0.1 sq. in. in area. In this method, the object is coated with an adhesive and a single layer of small metal particles. The change in weight gives a measure of the external area of the object.
Systematic variations in the density of the metal particle coating are discussed, and appropriate correction factors are given.
This method is intended for use in research that involves objects whose exterior surface areas have an effect on the process being investigated. Examples are the drying of agricultural grains and foodstuffs, the comminution of ores and chemicals, and the hydraulic and pneumatic transport of materials.
The precision of the method is adequate, the root-mean-square error being about 1%.