Title :
Ultrasonic attenuation spectroscopy of industrial slurries
Author :
Sharma, Arvind ; Pendse, Hemant P.
Author_Institution :
Dept. of Chem. Eng., Maine Univ., Orono, ME, USA
Abstract :
Using measurements of attenuation coefficients over a wide frequency range one can obtain particle size distribution (PSD) functions for concentrated colloidal suspensions. This paper deals with experimental aspects of ultrasonic spectroscopy. Recent activity in instrumentation for ultrasonic spectroscopy of emulsions and suspensions is briefly reviewed. The measurement issues related to calculations of attenuation coefficients using tone-burst signals are outlined showing significance of using the variable pathlength mode of operation, broadband transducers, and wide dynamic-range signal processing hardware. Sensitivity analysis of attenuation coefficient spectra in relation to changes in the PSDs is presented
Keywords :
colloids; particle size measurement; sensitivity analysis; spectroscopy computing; suspensions; ultrasonic absorption; ultrasonic measurement; attenuation coefficient; attenuation coefficients; broadband transducers; concentrated colloidal suspensions; emulsions; industrial slurries; mining; particle size distribution; sensitivity analysis; suspensions; tone-burst signals; ultrasonic attenuation spectroscopy; variable pathlength mode; wide dynamic-range signal processing hardware; Attenuation measurement; Frequency measurement; Instruments; Particle measurements; Signal processing; Size measurement; Slurries; Spectroscopy; Suspensions; Ultrasonic variables measurement;
Conference_Titel :
Frequency Control Symposium, 1997., Proceedings of the 1997 IEEE International
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-3728-X
DOI :
10.1109/FREQ.1997.638543
