System and method for determining particle size in particulate solids
OwnerStephen Tallon, Clive Eric Daviesinventors
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Abstract
A method for assessing the particle size of a bulk particulate material (1), such as powdered or granular material includes transmitting sound energy (as herein defined) through the particulate material (1) from a source (2) to a detector (3), and assessing the particle size from the time taken to pass through the material from the source (2) to detector (3) or signal velocity, through the material (1). Typically the signal is a frequency or frequencies in the range about 20 Hz to 20 kHz (but higher frequencies are envisaged), and the particulate material may be in a moving production stream of the particulate material (1). Apparatus is also claimed.
Claims30
A method for assessing the particle size of a bulk particulate material, including:
- transmitting sound energy (as herein defined) through the particulate material from a source to a detector, and
- assessing the particle size from the the time taken for said energy to pass through the material from the source to detector or signal velocity, through the material.
A method according to claims wherein the moving material is material in a stream of flowing particulate material.
Apparatus for assessing the size of particles of a bulk particulate material including a signal source arranged to transmit sound energy (as herein defined) through the material, a detector arranged to detect the transmitted energy, and means arranged to assess particle size from the time taken for the signal to travel from the source to the detector or the signal velocity, through the material.
Dependencies are inferred from the claim text.