Coke and Chemistry · 2012 · 19 citations · 0 references
The oxidation of coal of different ranks and from different basins is practically the same. There are three main stages: the initial stage, intense oxidation, and saturation. The boundary Δt = 6°C is assumed to mark the transition from the initial stage to intense oxidation. This transition sharply impairs the coal properties. In the initial stage, the oxidation rate is different for coal of different metamorphic development and increases with the yield of volatiles.