Abstract: “The paper compares the results of the test of continuous moisture content measurements of lime hydrate under operating unit production conditions where the infra-red spectroscopy method and the classical method of the mass-decrease of samples in drying chamber were employed. The large differences which two measurement systems show are explained in connection of the changes of the measurement process conditions. The paper shows the taken data of infrared spectral measurement of the powder material moisture content as the function of:”

Keywords: moisture content, fine particulate material, infrared spectra