Method of removing void spaces from carbonaceous material

摘要

Disclosed is a method for transforming high moisture low rank coal or other carbonaceous material into a high-energy, water resistant product. The raw feed is comminuted then mechanically compacted by a roller press with rolls of a specified profile to mobilize the inherent moisture and collapse most of the interstitial pore spaces. The mobilized moisture is then removed by low-temperature drying and the material is sized and shaped to form a product that is resistant to re-absorption of water or other liquids.