Abstract
The well-known GOST systems for classification of coking coal are used by each coal mine, but there are many deficiencies regarding their application to examine the interchangeability of coals.
Therefore, the unified classification system for USSR coals is presently being studied. Two methods for the unified classification are proposed, depending on discrepancies in classification parameters used; one is the system based on processing properties of coal (volatile matter, y index, etc.), the other is based on genetic properties of coal (maceral content, etc.).
Moreover, proposals by Dnepropetrovsk-groups and reports on classification trials for low-volatile non- or weakly-coking coals are mentioned in this report. At the end of the report, the characteristics and technological significance of classification parameters, which are the key points of coal classification, are reviewed and summarized.
