An Object That Can Be Burned But Doesn't Melt

Question

Is there a object that can be burned and DOESN'T MELT

Answer 1

Yes there is.  Solid rocket propellant is an example, such as used in the Solid Rocket Boosters of the Space Shuttle.  The solid rocket propellant is burned, but it does not melt into a liquid.  It goes straight from a solid to a hot gas.