FIELD: measurement equipment.
SUBSTANCE: invention refers to measurement equipment and can be used for automatic determination of metal concentration in ore. According to the method before control of grade of ore, ore passes through conveyor without metal impurities. For heating, area thermal source is used, which width does not exceed conveyor width. After time τspec when heating is finished, measured is average value of temperature based on heated surface of ore without metal T1av. Based on these measurements, formed is calibration curve. Then ore containing metal is continuously supplied to conveyor and heated. After time τspec average value of temperature Tavi is measured on each i frame. Value Tavi-T1av is determined based on calibration curve. Using value (Tavi-T1av), determined is percentage of metal in ore. Besides, a device for implementation of the above method is proposed.
EFFECT: improving reliability of determination of metal concentration in ore.
6 cl, 7 dwg, 1 tbl
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