Testing method for measuring physical properties of soft structure particles and application method of testing device

Abstract

The invention discloses a testing device for measuring physical properties of soft structure particles and an application method of the testing device. The testing device comprises a conical flask, a convolutional oscillator, a laser particle analyzer, a peristaltic pump, a widemouthed sucker, a plastic pipe and a computer. The conical flask serving as a sample chamber for uniformly mixing the soft structure particles is fixed on the convolutional oscillator; samples in the conical flask are uniformly mixed through oscillating stirring of the convolutional oscillator; the peristaltic pump is used for supplying pumping force to enable the samples in the conical flask to enter the laser particle analyzer to perform particle property monitoring; the widemouthed sucker serves as a sample taking and injecting tool; the computer is used for analyzing the data of the monitored soft structure particles. The testing device remedies the defects of conventional measurement methods, can obtain the physical properties, such as particle size distribution and fractal dimension of particles, of the soft structure particles in the condition that soft particle structures are not destroyed basically, and is particularly applicable to the measurement of the properties of aggregates (flocs) be divorced from the original flocculation conditions and aggregates (flocs) which cannot be directly subjected to on-line flocculation monitoring by the laser particle analyzer.

Description

technical field [0001] The invention relates to a test device for measuring the physical properties of granules and a method for using the same, which is especially suitable for measuring the physical properties of weak structure granules. Background technique [0002] In the field of solid-liquid separation, the physical properties of particles such as particle size distribution and fractal dimension will affect the effect of solid-liquid separation. For some muds that are difficult to dewater, such as sewage from sewage plants, dredging mud, etc., the fine particles are generally formed into aggregates (flocs) by adding flocculants to promote the separation of mud and water. Determining the size of aggregates formed by flocculation is of great significance for studying the process of mud-water separation, predicting the effect of mud-water separation, and optimizing flocculants and process parameters in the flocculation process. [0003] Because the aggregates (flocs) pro...

AI Technical Summary

Problems solved by technology

Generally speaking, the aggregates (flocs) produced by the flocculation of low-concentration solutions can be continuously flocculated online, and at the same time, the conventional laser particle size analyzer is used to monitor the particle size distribution and fractal shape. Conditions or some high-concentration solutions (such as mud) cannot be monitored by conventional laser particle size analyzers. Monitoring out of the original flocculation environment will lead to the destruction of weak aggregates (flocs) under mechanical agitation, and flocculation detection of high-concentration solutions will lead to Multiple scattering occurs during the measurement process, making the measurement results inaccurate

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