The Swelling of Coals. Model Experiments with Glass

JSGT 1947 V31 T267-T269

Products having a similar bubble structure to that of furnace coke can be prepared by firing pressings made of high-melting glass powder mixed with decomposable carbonates if the decomposition temperature of the carbonate at 1 atm falls within the softening range of the glass. Rapid heating favours swelling; incorporation of inert particles reduces it. It is inferred that physical factors are highly important in the coke making.

D. H. Bangham, J. H. Mckee & M. Pirani