Abstract
One important consequence arising from the formation of alkali metal lamellar compounds of carbon is swelling and disruption of carbon refractories in commercial aluminum reduction cells. Based on work originally reported in Russian literature a practical test method has been developed for comparing the alkali resistance of various raw materials and compositions. Using a modification of a miniature electrolytic cell described by Belyayev a number of materials available in the United States have been evaluated as to their predicted usefulness in aluminum furnace linings. The findings are in general agreement with previously published results. The degree of disruption of carbon materials is found to decrease as the degree of regularity of the crystalline structure increases, i.e. as the carbon becomes more graphitic.
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