Measuring and monitoring the size of particulate material

Details Measuring and monitoring the size of particulate material Measuring and monitoring the size of particulate material

G - Physics

01

N

G01N 15/02 (2006.01) G01F 1/30 (2006.01) G01F 1/52 (2006.01) G01F 1/76 (2006.01) G01F 1/86 (2006.01) G01G 11/08 (2006.01) G01N 9/02 (2006.01) G01N 9/32 (2006.01)

Patent

CA 2133343

Apparatus for monitoring a characteristic diameter of a flowing particulate material, comprises a chamber (31) having a particle size measurement outlet (33) of known dimensions through which the flowing material passes, means to deter- mine the flow rate of the material, and means to determine the characteristic di- ameter of the material by reference to the dimensions of the particle size measure- ment outlet, the bulk density; and the flow rate of the material. The bulk density may be known or measured. The flow rate of material may be measured in a sec- ond chamber (34) having another outlet (37) through which the material flow also passes: The flow rate measurement outlet may be in the form of a slot (37). Flow rate is determined by reference to the height (h2) of material flow through the slot. Bulk density may be determined by maintaining a constant volume of ma- terial in the chamber with the particle size measurement outlet, and by refer- ence to changes in the weight (31b) of the contents of this chamber.

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