Patent ID: 6727990
Filing Date: 2004-04-27
Classification: B03B,B03D

Abstract:
A method for monitoring and analyzing the surface of floated material, in which an optical image of said surface is formed continuously and converted repeatedly, optoelectrically to electrical signals which are read, transferred and processed digitally for determination and output of quantities corresponding to physical and statistical properties of said material and surface, and in which said floated material is the flotation froth upon a flotation cell, characterized in that said image is at the optoelectrical conversion limited to a narrow strip with sides of the same form as the overflow edge of the flotation cell and divided into a chain of image elements, and that the elements of the detected, electrical signals correspond individually to said image elements and that, corresponding optically to said image being limited to a narrow strip, a strip of the same form on said surface is homogeneously illuminated and everywhere at an equal distance from the overflow edge of a flotation cell.