Method and device for measuring mass of solid in solid and liquid mixture

Abstract

The invention relates to a method and device for measuring the mass of a solid in a solid and liquid mixture. The method comprises the following steps that a) the type of the solid in the solid and liquid mixture is determined, and the density Psolid of the solid is obtained by a table look-up or experiment method; b) the Volume Vmixutre and the mass Mmixture when the volume of the solid and liquid mixture equals Vm are measured; and c) according to that the volume of the solid and liquid mixture equals the sum of the volume of the solid and the volume of the liquid and that the mass of the of the solid and liquid mixture equals the sum of the mass of the solid and the mass of the liquid, an equation set is obtained, and values in the steps a) and b) are substituted into the equation set to obtain the Msolid. The method is simple and practical, realization approaches are diversified, both online measurement and static measurement can be realized, and the measuring precision is easy to control.

Description

technical field [0001] The invention relates to a method and a device for measuring the quality of solids in a solid-liquid two-phase mixture. Background technique [0002] In mine beneficiation, it is necessary to measure the quality of solids in the solid-liquid (two-phase) mixture. In order to monitor the ratio of solids in the solid-liquid mixture to the total solid-liquid mixture, intermittent or continuous measurement is required. In the traditional method, it is very difficult to achieve real-time monitoring. The only way is to use a volumetric flowmeter to measure the volume of the mixture, and at the same time use a density meter to measure the density of the mixture, and then calculate the mass of the solid. However, this method The main disadvantage is that if you use a common density meter, the stability is not easy to control; if you use a nuclear density meter, although the measurement is stable, it requires sufficient solid-liquid stirring (cannot be measured ...

AI Technical Summary

Problems solved by technology

[0002] In mine beneficiation, it is necessary to measure the quality of solids in the solid-liquid (two-phase) mixture. In order to monitor the ratio of solids in the solid-liquid mixture to the total solid-liquid mixture, intermittent or continuous measurement is required. In the traditional method, it is very difficult to achieve real-time monitoring. The only way is to use a volumetric flowmeter to measure the volume of the mixture, and at the same time use a density meter to measure the density of the mixture, and then calculate the mass of the solid. However, this method The main disadvantage is that if you use a common density meter, the stability is not easy to control; if you use a nuclear density meter, although the measurement is stable, it requires sufficient solid-liquid stirring (cannot be measured in real time), and there is a risk of environmental pollution; for static conditions It is difficult to measure the density of the mixture, mainly because the density of solids is generally greater than 1, it is easy to cause solid-liquid separation and precipitation, and it is difficult to achieve uniform distribution of solid-liquid

Moreover, it is difficult to measure the density of the mixture in a static state; the general mixture will wear a lot on the pipe wall during the flow process, and the flowmeter is not durable enough

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