He-Neガスレーザ透過法によるカオリン鉱物の粒度分布測定

抄録

The particle size determination of kaolin minerals by He-Ne gas laser extinction method has a good reproducibility when incorporated with either a batch method or a stopped flow method. Besides, the particle size distribution obtained by this method has a good correlation with that by an Andreasen pipette method.
This method is suitable for the on-the-process determination of particle size distribution by gathering slurry automatically through the by-pass from the process, diluting it carefully with water, and after adjusting the concentration, using a stopped flow method. The stopped flow method used in this research has such a disadvantage that it requires a long time for determination, because it makes use of a gravitational sedimentation of kaolin. But it is possible to make the required time shorter by using the centrifugal sedimentation.
The stopped flow method which uses a flow cell, with He-Ne gas laser as a light source is considered applicable to the determination of particle size distribution in the disposal process of factory wastes containing suspended particles and the control of particle size in the wastes as well as to the quality control in the production process of a factory.