METHOD OF DETERMINATION OF MOBILITY OF POWDERY MATERIALS Russian patent published in 2000 - IPC

FIELD: tests of physical and mechanical properties of various loose materials used in chemical, food, pharmaceutical and other branches of industry. SUBSTANCE: in accordance with method of determination of mobility of powdery materials vertical vibration of tested material is realized by pulsating feed of gas. Frequency of pulsation of gas stream amounts to 3-6 Hz and relative pulse duration is 0.4-0.6. Velocity of gas in cross-section of measuring vessel is 1.1-2.5 times higher than velocity of start of fluidization of powdery material. EFFECT: increased safety and measurement accuracy. 1 dwg, 1 tbl