Abstract
The change of ultrasound velocity in aqueous solution was investigated as a function of particle size and suspension density. NaCl, KNO 3, K 2SO 4 and MgSO 4 *7H 2O was used as model substances. Measurements were made on a series of suspensions with different solid concentration (from 0–60%wt) and particle sizes ranges (from 250–500 μm). It was found that there is a strong relation between the particle size and/or suspension density and the ultrasonic velocity. This relation was correlated with a second degree polynomial equation and the error percent was determined. Also the compressibility of the media and particles were calculated based on Urick equation.
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