On-Line XRF Analysis of Elements in Minerals on a Conveyor Belt

Determination of the elemental composition of minerals and their derivatives at mining enterprises is important at all stages of minerals processing. This paper is devoted to the results of development and application of an online X-ray fluorescence (XRF) analysis method for monitoring mineral elements on a conveyor belt of mining enterprises. Evaluation of metrological characteristics achieved in the online analysis of lump, ore, charge feed, cake and slag materials on conveyor belt is presented. Each implementation of the online XRF analysis at mining enterprises was preceded by laboratory studies, development of measurement methods, calibration of a specific XRF analyzer using standard reference samples for a specific concentration range of the monitored elements. Typical areas of application for monitoring the concentration of elements in rocks on conveyor belts of mining enterprises and those solutions that made it possible to achieve the required measurement accuracy of an X-ray fluorescence analyzer in online mode are presented.