FIELD: separation.
SUBSTANCE: proposed group of inventions relates to a method for optical measurement of parameters of a froth flotation substance, to a system for implementing said method and controlling a flotation method based on the measured parameter. Method of optical measurement of parameters of the froth flotation substance containing collector molecules that are adapted to bind with mineral particles contained in the froth flotation substance to increase the surface hydrophobicity of said mineral particles includes the following steps: adding a predetermined number of indicator molecules to at least a part of the froth flotation substance, where said indicator molecules are adapted for specific binding to the collector molecules in the froth flotation substance and where the indicator molecules are chosen in such a way that the binding reaction between said indicator molecules and the collector molecules causes a detectable change in the optical absorption spectrum of said indicator molecules, after this measurement, when using light measurements from a light-emitting unit, at least a part of said optical absorption spectrum of said indicator molecules in the foam flotation substance; and after this determination, based on the measured part of the optical absorption spectrum, said indicator molecules, the amount or concentration of the residual collector molecules in the foam flotation substance. System of cells of froth flotation to control the froth flotation method includes: at least one cell of froth flotation, an optical measurement system which includes: at least one light-emitting unit adapted to emit measurement light into said froth flotation substance, however, at least a part of said measurement light falls into the optical absorption spectrum of the indicator molecules associated with the collector molecules, at least one sensor unit adapted to measure at least a part of the optical absorption spectrum of said indicator molecules based on the measurement light; analyzer unit, configured to determine the amount or concentration of residual collector molecules in the foam flotation substance, based on the measured part of the optical absorption spectrum of the mentioned indicator molecules; and a control unit for controlling said froth flotation method. Control unit is configured to control the addition of the collector molecules to the froth flotation substance based on the specific concentration of the collector molecules and when using a feed control unit.
EFFECT: technical result is optimization of the efficiency of the froth flotation method.
19 cl, 7 dwg
