Control of coal separation in a jig using a radiometric meter. (September 2016)

• Record Type: Journal Article
• Authors: Cierpisz, S.; Kryca, M.; Sobierajski, W.
• Is Part Of: Minerals engineering. Volume 95(2016)
• Page Start: 59
• Page End: 65
• Publication Date: 2016-09
• Subjects: Coal preparation -- Discharge control in a jig -- Radiometric density meter -- Natural radiation from coal; Mines and mineral resources -- Periodicals; Ressources minérales -- Périodiques; Mines and mineral resources; Periodicals; Electronic journals; 622
• DOI: 10.1016/j.mineng.2016.06.014
• Languages: English
• ISSNs: 0892-6875

Abstract

Highlights: A radiometric density meter can be applied effectively to control a jig operation. A monitor of the natural radiation from the bed can control a jig operation. These methods give better results of a jig control than the conventional float. The natural radiation method is cheaper and does not require a radiation source. Abstract: A new monitoring system based on the monitoring of natural radiation emitted by the material in the separation zone of a jig compartment has been developed and tested in parallel with a radiometric density meter and a conventional float. The authors investigated the correlation between the separation density monitored by the meter and the intensity of the natural radiation. The correlation coefficient was ca. R = 0.973 and the standard deviation of the measurement in regression with the density meter indications was sc = 0.034 g/cm 3 . This shows that after a float as the measuring unit in a control system is replaced by a natural radiation monitor, one can expect good stabilisation of the separation density. The paper discusses advantages of such systems over float-based systems.