raw meal and fine coal moisture

what are the ideal range of moisture in rawmeal and in fine coal. and if we make moisture in rawmeal and in fine coal 0% what will be the effects on burning.

There is no general term called "Ideal" for moisture content in rawmeal and fine coal. This scientifically speaking depends mainly on

Rawmeal : Flowability requirement, which are "typically"met at about 0.5 - 1.0% anything higher than this will create lumps/flowability issues in downstreaming processing. There is no strong reason why rawmeal should not dried to 0% moisture, if it is not tranported using any open belt conveyor (except for hte fact that, it demands extra energy)

Fine coal : it is certainly a big technical jargon; nevertheless, in short first it is the H2 molecules in fuel water that reacts with O2...which propogates flames. In simple words if fule is dried to lesser than equillibrium moisture (may be 0%), it would be very difficult for fuel to ignite.

The coal must be sufficiently dry for grinding, storing, and feeding purposes.

Excessive drying of coal should be avoided, due to the accelerating process of oxidation which occurs as the moisture content is reduced, with the consequent risk of spontaneous ignition. In practice, drying off the surface moisture of the coal and a small part of the hygroscopic moisture will ensure a high degree of safety combined with good processing and handling properties.