Pelletizing lignite
Patent
·
OSTI ID:5372484
Lignite is formed into high strength pellets having a calorific value of at least 9,500 Btu/lb by blending a sufficient amount of an aqueous base bituminous emulsion with finely-divided raw lignite containing its inherent moisture to form a moistened green mixture containing at least 3 weight % of the bituminous material, based on the total dry weight of the solids, pelletizing the green mixture into discrete green pellets of a predetermined average diameter and drying the green pellets to a predetermined moisture content, preferrably no less than about 5 weight %. Lignite char and mixture of raw lignite and lignite char can be formed into high strength pellets in the same general manner.
- Assignee:
- Dept. of Energy
- Patent Number(s):
- US 4412840
- OSTI ID:
- 5372484
- Country of Publication:
- United States
- Language:
- English
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