Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Reexamination Certificate
2006-11-28
2006-11-28
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
C073S053030, C073S061410, C073S061620, C073S061650, C073S061660, C073S061710, C073S061750, C073S061420
Reexamination Certificate
active
07140239
ABSTRACT:
A system for determining properties of settling suspensions includes a settling container, a mixer, and devices for ultrasonic interrogation transverse to the settling direction. A computer system controls operation of the mixer and the interrogation devices and records the response to the interrogating as a function of settling time, which is then used to determine suspension properties. Attenuation versus settling time for dilute suspensions, such as dilute wood pulp suspension, exhibits a peak at different settling times for suspensions having different properties, and the location of this peak is used as one mechanism for characterizing suspensions. Alternatively or in addition, a plurality of ultrasound receivers are arranged at different angles to a common transmitter to receive scattering responses at a variety of angles during particle settling. Angular differences in scattering as a function of settling time are also used to characterize the suspension.
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Bamberger Judith A.
Greenwood Margaret S.
Panetta Paul D.
Pappas Richard A.
Battelle (Memorial Institute)
Klarquist & Sparkman, LLP
Shah Samir M.
Williams Hezron
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