EP 0234068 A1 19870902 - Coal enhancement process.
Title (en)
Coal enhancement process.
Title (de)
Aufbereitungsverfahren für Kohle.
Title (fr)
Procédé de préparation du charbon.
Publication
Application
Priority
EP 86301033 A 19860214
Abstract (en)
The application relates to enhancing coal by removing the gangue by slurrying crushed run of the mine (ROM) coal with a heavy medium and thereafter allowing the solids to settle or float according to their inherent densities. The float solids are separated from the heavy medium as one stream and the sink solids as a second stream. These solids are substantially freed of the heavy medium by washing with hot (eg. 90 DEG C to 100 DEG C) water and the vapor azeotrope which forms from the water and heavy medium mixture is removed. The heavy medium content of the solids can be reduced to less than about 400 parts by weight of heavy medium per million parts by weight of solids.
IPC 1-7
IPC 8 full level
CPC (source: EP)
B03B 5/447 (2013.01); B03B 9/005 (2013.01)
Citation (search report)
- [A] US 4076505 A 19780228 - DESSAU RALPH M
- [A] US 3365395 A 19680123 - DAN MCDONALD
- [A] US 3275549 A 19660927 - CRABB CLARENCE R, et al
- [A] US 4324560 A 19820413 - FONSECA ANTHONY G
- [E] US 4579650 A 19860401 - NANKEE ROBERT J [US], et al
- [A] US 4198289 A 19800415 - ELLIOTT GUY R B [US], et al
- [A] US 3347370 A 19671017 - CARL RAMPACEK, et al
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 86301033 A 19860214