Method for determining physical properties

Details Method for determining physical properties Method for determining physical properties

G - Physics

01

N

354/25, 349/35

G01N 29/00 (2006.01) G01N 29/04 (2006.01)

Patent

CA 1324432

ABSTRACT OF THE DISCLOSURE METHOD FOR DETERMINING PHYSICAL PROPERTIES A method for the determination of the value of a property of the material within a mill during the comminution of solid material within the mill comprises the steps: (a) detecting the noise intended of milling by means of an analogue electrical signal, the intensity of which is proportional to the intensity of the noise in the audio frequency range, converting the analogue signal to a digital signal, (c) passing the digital signal through a digital band-pass filter to select at least two frequency bands, and (d) analysing the data from the bands by means of a multivariate statistical technique to obtain the value of the property. The method is particularly suitable for determine the particle size distribution of material being ground in a ball mill.

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