Abstract
In studies involving the induced oxidation of coals by heating or chemical methods, it is important to understand direct effects of oxidation by isolating secondary effects which depend on the methods adopted to oxidize. In the case of gaseous oxidation, secondary thermal effects need to be differentiated from the primary oxidation. In chemical oxidation, effects of various by-products of the oxidation reaction need to be isolated. Experiments designed to separate these influences show the important role of thermal effects during short oxidation periods, atmospheric moisture, and of dissolved products of chemical oxidation in determining surface properties and floatability of bituminous coal.
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