Online XRF Analysis of Industrial Sand Impurities on a Conveyor Belt

The paper is devoted to results of the online XRF method development for analysis of impurities in industrial sands (quartz sand, nepheline syenite, feldspar) on conveyors of mining enterprises.Typical problems of impurity concentration control (Fe 2 O 3 , Al 2 O 3 , TiO 2 ...) in dry and wet sands are presented.This work examines technical solutions that enabled achieving a required measurement accuracy in an online mode using an industrial XRF CON-X analyzer on conveyors of enterprises.The paper presents results that have been reached in detection of impurities, the estimation of statistical accuracy of concentration values obtained, and sensitivity of measurements in various applications.Results of the online XRF analysis are compared with the results obtained in factory laboratories.