Is it true that the higher the volatiles in coal, the greater its chemical activity?
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In practice, at our factory, when the volatilicity of the coal used as feedstock for gas production (white coal dust) is low, we sometimes mix in some coal with a higher volatilicity level; this is said to be done to increase the chemical reactivity of the coal. So, does a higher volatilicity level of coal indeed mean higher chemical reactivity?
You can understand it this way. The higher the volatiles, the worse the thermal stability; excessive volatiles are not beneficial for gas production or maintaining stable furnace conditions.