coal introduction geology of coal formation of coal - Ohio Geological .The coal we use is combustible sedimentary rock composed of carbon, hydrogen ... cesses are used to separate impurities from crushed coal. This cleaning.use of crushed coal in details,1.3 Properties of Coal - ResearchGateIt is a soft coal composed mainly of volatile matter and moisture content with low . Fresh sample of crushed coal is weighed, placed in a covered crucible, and heated in a furnace at .. This helps to reduce power consumption in the crusher.
use of crushed coal in details