Dry Beneficiation Technique for Coal by Dual-Energetic Gamma-Ray Transmission

摘要

In this paper, a kind of novel dry beneficiation technique using gamma-ray transmission is revealed. The principle of classification is gamma-ray transmission intensity estimation varied with ash component, dual-energetic and time-independent gamma beam of point incident on a lump coal with a radiation detection system afterward. The feature of mass absorption ratio varied with the gamma ray energy finally enables the detection of mine component of various complex shapes. In the end, symmetric error analyze revealed that the intensities of incident gamma ray would always be underestimated. The only practical method to diminish this systematic error is to decrease the sampling time T.