Dewatering fine coal slurries by gel extraction
Journal Article
·
· Separation Science and Technology
- Univ. of Cincinnati, OH (United States). Dept. of Chemical Engineering
Gel extraction is evaluated as a novel technique for dewatering fine coal slurries. This technique uses temperature-responsive gels to absorb water from slurries at low temperatures; after separation of the swollen gel from the dewatered slurry, the gel is heated slightly above ambient temperature, which causes it to release the water it absorbed. The gel can then be recycled. The equilibrium and kinetic properties of poly(N-isopropylacrylamide) gel were evaluated for utility in this process. The gels effectively dewatered slurries to around 70 wt% solids; performance was not a strong function of particle size, though coarser slurries ({minus}16 mesh) could be dewatered to greater extents than the finer slurries (325 x 400 mesh). The gels showed no sign of deterioration over a period of 2 months and 20 cycles.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 653400
- Journal Information:
- Separation Science and Technology, Journal Name: Separation Science and Technology Journal Issue: 10 Vol. 33; ISSN 0149-6395; ISSN SSTEDS
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dewatering fine coal slurries by gel extraction
Dewatering fine coal slurries by gel extraction. Final report
Development of an Advanced Fine Coal Suspension Dewatering Process
Technical Report
·
Sun Dec 31 23:00:00 EST 1989
·
OSTI ID:6881765
Dewatering fine coal slurries by gel extraction. Final report
Technical Report
·
Sun Dec 30 23:00:00 EST 1990
·
OSTI ID:10118368
Development of an Advanced Fine Coal Suspension Dewatering Process
Technical Report
·
Wed Apr 30 00:00:00 EDT 2008
·
OSTI ID:970043