METHOD FOR IN-LINE X-RAY ANALYSIS OF ORE AND CHARGE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2022 - IPC G01N23/223 

FIELD: X-ray spectral analysis.

SUBSTANCE: invention relates to in-line X-ray spectral analysis of ore and charge. The substance of the invention lies in the fact that the ore or charge moving on the conveyor belt passes under the analyzer, which creates X-ray radiation by the excitation unit in the analyzer, causing the secondary characteristic radiation reflected from the ore or charge, containing information on the mass fraction of chemical elements in the ore or charge , which is recorded by the spectrometric unit, which is part of the analyzer, while at the set time points t_k, simultaneously with measurements of the secondary characteristic radiation I_k, measurements of the distances from the analyzer to the ore or charge D_k are carried out, which makes it possible to reject measurements of the secondary characteristic radiation Ik, aggravated by errors in the uneven placement of the analyzed material on the conveyor belt, using the modulus of the difference between the measured distance D_k and the base distance D from the analyzer to the average level of the analyzed material on the conveyor belt, which is compared with the threshold deviation m d from the middle level to the upper and lower levels, where D and d are the parameters determined before the start of measurements with the possibility of obtaining an estimate of the mass fraction of chemical elements in the composition of the ore or charge from the selected measurement values ​​of the secondary characteristic radiation I_k.

EFFECT: increasing the accuracy of determining the mass fraction of chemical elements in the analyzed material in a non-contact in-line mode.

4 cl, 5 dwg