| 摘要 |
<p>The invention concerns a method for measuring the degree and homogeneity of alumina calcination comprising the use of an image analysing device equipped with a sensitive camera in a spectral analysing window corresponding to a wavelength domain equal or close to visible light and comprising the following steps: mixing alumina to be analysed in a liquid whereof the refractive index ranges between the refractive index of an under-calcined alumina and the refractive index of a calcined alumina; (b) preparing a glass slide for observing said mixture in said image analysing device, said mixture being illuminated with a stable polychromatic radiation; (c) capturing the image with the camera and processing the signal leading to the definition of an image formed by a given number of pixels with three colorimetric components; (d) statistic processing of said pixels using their colorimetric components and providing the degree of calcination and the homogeneity of calcination.</p> |
