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This paper illustrates, by means of the case study of the most important lignite deposit in Northern Greece, the lignite recovery in multi-seam or “zebra” type lignite deposits. It discusses the difficulties encountered in most efficiently producing lignite from this type of sequence, characterized by the multiple interchanges of lignite layers and thin sterile intercalations consisting mainly of clays, marls and sands. The knowledge of the geometry and the quality characteristics of the recoverable lignite ar...

The determination of the recoverable lignite layers requires the thorough knowledge of the lignite quality distribution in the site. The lignite quality is seriously affected by the inorganic impurities included either inside the lignite mass or/and in the thin intercalations coexcavated with lignite. The present study deals with the distribution of the lignite quality in the Southern Field Mine lignite deposit giving special attention to the energy content, the ash content and the CO2 content. Specific equations ...