The Surface Area Measuring Method Used on Particles of Pulverized Coal by the Image Processing System with Microscopes.

概要

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The status of combustion of the pulverized coal may be influenced by the shape, especially, of its surface area. Thus, the measuring of the surface area is one of the most important tasks.Surface area of not a single particle but particles has been measured by gas adsorption method and permeation method.The authors have proposed an image processing technique with microscope as an on-line measurement particle size distribution and particle shape coefficient.In this paper, we present a new method to measure a surface area of pulverized coal with an imageprocessing technique using two optical microscopes. The measurement errors obtained by simulations using regular shape particles were less than 10% and the accuracy was discussed on the basis of simulated results. Surface areas of two kinds of pulverized coal were measured by the method and we showed the measuring results.
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