Method and apparatus for sensing the ash content of coal

摘要: The ash content of a granular coal sample having moisture greater than 10% by weight is sensed bombarding it with primary radiation comprising at least two spectrums energies (46 KeV and 9-17 KeV) to cause radiative reactions in the coal, sensing secondary generated caused one KeV), radiations characteristic fluorescent energy element (e.g. iron) sample, being excited other (9-17 using determine coal.