Method and apparatus for determining apparent density of pervasive solid substance

Abstract

The invention relates to a method and apparatus for determining apparent density of a pervasive solid substance. A specific gravity bottle or Webster balance can be used for determining the density of insoluble solid, the density of soluble solid can be determined by utilizing a gas specific gravity method, but the requirement for the instrument manufacturing precision is high, and the economic performance and convenience are poor. The method is characterized in that solid fluid is adopted as a volume replacement medium; the volume of a to-be-detected substance is determined by utilizing a special volume determination apparatus; the mass of the to-be-detected substance is determined by utilizing an analytic balance; the determination of the apparent density is realized by virtue of calculation of a special formula. The apparatus consists of a lower bottle body, a middle bottle body, an upper bottle body, a measuring range tube and charged solid fluid. The apparatus is simple in structure, practical and economical; the solid fluid can be reutilized and is environment-friendly; the solid fluid is charged in one step, the to-be-detected substance is separated from the solid fluid by utilizing a fixed screen in the process for inverting the apparatus, and the operation is very convenient; the apparatus is suitable for determining the apparent density of all solid substances, and the difficulty for determining the apparent density of soluble or wettable solid substances with irregular shape can be solved.

Description

technical field [0001] The invention relates to a method for measuring density, in particular to a method for measuring the apparent density of a universal solid object and a device thereof. Background technique [0002] Apparent density is the ratio of the mass of an object to the space it occupies, and it is more practical than the true density in the analysis of physical properties of natural objects and engineering calculations. However, due to the irregular shape of solid substances, volume measurement is difficult, especially for soluble and hygroscopic solids, the measurement of volume and density is even more difficult. At present, to measure the density of insoluble solids, a pycnometer or a Webster pycnometer can be used. For soluble solids, gas pycnometry can be used, and there are studies on gas constant temperature and pressure ratio method and gas specific heat capacity ratio method. However, the manufacturing precision of the instrument using the gas volume...

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Problems solved by technology

However, the manufacturing accuracy of the instrument using the gas volume replacement method is harsh, and a s

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