PARTICLE SHAPE DETERMINATION METHOD FOR MINUTE MINERAL AND ITS PARTICLE SIZE MEASURING APPARATUS

摘要

PROBLEM TO BE SOLVED: To shorten extremely the time required for a shape determination of one sample, thereby obtains particle shape determinations of many samples easily in a short time, and to execute easily the operation of a crusher or a grinder in optimum operation conditions. ;SOLUTION: This particle shape determination method for a minute mineral (sample) and its particle size measuring apparatus are used for quality determination of particle shapes of minute particles produced in a stone-crushing work or the like, and have a vessel 1 in which the sample is charged as much as a prescribed quantity and a small-sized hole 11 on the lower end part, from which the sample will flow out therefrom smoothly and easily, and a time required for outflow of the sample from the hole 11 is measured and the quality of the particle shapes of the sample is determined by the time. Measurement of the outflow time from the point of time when the outflow of the full sample of the prescribed quantity in the vessel 1 starts to the end of the outflow is executed by a stopwatch or a detector 3 automatically.;COPYRIGHT: (C)2000,JPO