Assessing the condition of coke

As shown by critical analysis, a recent article by Rubchevskii and his colleagues failed to adequately review methods of assessing the condition of coke [1]. A method developed in the central laboratory of the coke plant at OAO EVRAZ NTMK has long been used to assess the condition of coke in terms of the difference in the yield of volatiles (ΔV daf ) between coke breeze (V cb daf ) and coke (V c daf ). This method is simpler, more convenient, and more precise than the determination of the bulk yield of volatiles from coke.