A NEW WHITE-LIGHT PHOTOSEDIMENTOMETER FOR SOLID-LIQUID DISPERSION STUDY - DEVICE DESCRIPTION, STABILITY AND SETTLING BEHAVIOR

This paper describes a new photosedimentation device that monitors and measures the settling rate, hindered settling constant, flocculation factor, sediment volume and rate of coagulation of monodisperse sample s of solid particulates in dispersant liquids. First we examine the we ll-known theoretical aspects of sedimentation as well as some sediment ation and turbidity applications. Then we introduce the K200 photosedi mentometer and most of its technical features and advantages with resp ect to existing devices. Finally, we give the results of several turbi dimetric (particle size modification, concentration determination) and settling measurements (stability parameters).