Moisture in Coal - Definition & Determination
Sep 17, 2017· This water plus the moisture within the material, is referred to as to as total moisture. 2. Surface or Free Moisture: Free moisture is that quantity of water which is physically adhering to coal.Run-of-mine coal | Britannica,Other articles where Run-of-mine coal is discussed: coal mining: Coal preparation: Therefore, run-of-mine (ROM) coal—the coal that comes directly from a mine—has impurities associated with it. The buyer, on the other hand, may demand certain specifications depending on the intended use of the coal, whether for utility combustion, carbonization, liquefaction, or gasification.Coal mining - Coal preparation | Britannica,Coal preparation. As explained above, during the formation of coal and subsequent geologic activities, a coal seam may acquire mineral matter, veins of clay, bands of rock, and igneous intrusions.In addition, during the process of mining, a portion of the roof and floor material may be taken along with the coal seam in order to create adequate working height for the equipment and miners.