Coal treatment process and apparatus therefor

Patent · Tue Dec 31 00:00:00 EST 1991

OSTI ID:5670779

Getsoian, J A

This patent describes a process for obtaining product coal agglomerates. It comprises mixing an aqueous slurry of finely divided coal particles and particles of pyrites and other mineral matter with an organic, water-insoluble, steam-strippable, bridging liquid selected from the group consisting of aliphatic saturated hydrocarbons having from 5 to 9 carbon atoms and mixtures thereof, under high shear conditions effective to wet the coal particles with the bridging liquid and convert same into microagglomerates, then mixing the aqueous slurry of the microagglomerates of coal and the particles of pyrites and other mineral matters together with an organic, water-insoluble binder comprising asphalt and the bridging liquid, under low shear conditions effective to agglomerate the microagglomerates to form product coal agglomerates, then separating water and the particles of pyrites and other mineral matter from the product coal agglomerates, then heating the product coal agglomerates and thereby evaporating and removing the bridging liquid from the product coal agglomerates, and then recovering the product coal agglomerates substantially free of the bridging liquid.

• Assignee: Arcanum Corp., Ann Arbor, MI (United States)
• Patent Number(s): US 5076812; A
• Application Number: PPN: US 7-534633
• OSTI ID: 5670779
• Resource Relation: Patent File Date: 6 Jun 1990
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
AQUEOUS SOLUTIONS
MIXING
COAL
AGGLOMERATION
MINERALS
PYRITE
SLURRIES
ORGANIC COMPOUNDS
SATURATION
CARBONACEOUS MATERIALS
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
MIXTURES
SOLUTIONS
SULFIDE MINERALS
SUSPENSIONS
010300* - Coal
Lignite
& Peat- Preparation- (1987-)