Dust humectant performance measuring method

Abstract

The invention discloses a determination method for dust moistening agent performance. The dust is sieved, the mineral dust with the particle diameter less than 180 mesh is obtained; the sieved dust sample is distributed in the moistening agent solution, is made ultrasonic dispersion and still placement; the particle diameter of the dust in the moistening agent suspension is tested, the performance of the dust moistening agent is determined by particle diameter parameters. The invention is suitable for determining the performance of various fine dust moistening agent, the dust characteristics can be referred during the determination, the determination result can more directly reflect the moistening process of the moistening agent to the dust, the different moistening performances of the same moistening agent to the dust with different particle diameters can be synchronously analyzed, the action effect of the moistening agent to the dust with different particle grades can be quantitatively analyzed; the invention has high determination automation degree and broad application range.

Description

technical field [0001] The invention relates to the field of dust removal, in particular to performance measurement of a dust wetting agent. Background technique [0002] As we all know, the smaller the particle size of the dust, especially the dust with a particle size of less than 10 μm, the greater the harm to the human body, and it is precisely this type of dust that is not easily wetted by water. Dust wetting agents are one of the effective methods to suppress dust pollution. Therefore, the development of micro-particle dust wetting agents is of greater significance, and exploring new methods for measuring the performance of wetting agents will provide technical support for the development of wetting agents. At present, the existing methods for measuring the performance of dust wetting agents include: surface tension method, wetting angle measurement method, sedimentation method, drop method, upward and downward capillary penetration method, dynamic test method, etc. Ea...

AI Technical Summary

Problems solved by technology

The surface tension method can directly measure the surface tension of the wetting liquid, but its main disadvantage is that it is separated from the characteristics of the dust; the wetting angle measurement method is to measure the wetting liquid drop on the plane block (dust matrix), but the wetting agent has no effect on the block. After all, there is a big difference between the substance and the effect on fine particle dust; the sedimentation method analyzes the performance of the wetting agent by measuring the time for the dust sprinkled on the surface of the solution to sink into the solution, which is only suitable for hydrophobic dust with a small density, and It is not possible to analyze the wetting properties of wetting agents on dusts of different particle sizes at the same time; the drop method is still an indirect qualitative analysis, and cannot simultaneously analyze the wetting properties of wetting agents on dusts of different particle sizes; Large dispersion and large specific surface will cause bubbles, cracks and faults in the measurement, which will affect the accuracy of the test; the reverse osmosis method cannot analyze the wetting performance of the wetting agent on dust of different particle sizes, and the measurement accuracy is not high