Hardened, environmentally disposable composite granules of coal cleaning refuse, coal combustion waste, and other wastes, and method preparing the same

Patent · Tue Jul 10 00:00:00 EDT 1990

OSTI ID:7024680

Burnet, G; Gokhale, A J

A hardened, environmentally inert and disposable composite granule of coal cleaning refuse and coal combustion waste and method for producing the same are disclosed, wherein the coal combustion waste is first granulated. The coal cleaning refuse is pulverized into fine particles and is then bound, as an outer layer, to the granulated coal combustion waste granules. This combination is then combusted and sintered. After cooling, the combination results in hardened, environmentally inert and disposable composite granules having cores of coal combustion waste, and outer shells of coal cleaning refuse. The composite particles are durable and extremely resistant to environmental and chemical forces. 3 figs.

• DOE Contract Number: W-7405-ENG-82
• Assignee: Iowa State Univ. Research Foundation, Inc., Ames, IA (United States)
• Patent Number(s): US 4940611; A
• Application Number: PPN: US 7-287488
• OSTI ID: 7024680
• Resource Relation: Patent File Date: 20 Dec 1988
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ASHES
WASTE PROCESSING
GRANULAR MATERIALS
CORROSION RESISTANCE
SYNTHESIS
WASTE DISPOSAL
TAILINGS
AGGLOMERATION
BINDERS
COMMINUTION
CURING
LEACHING
SINTERING
COMBUSTION PRODUCTS
DISSOLUTION
FABRICATION
MANAGEMENT
MATERIALS
PROCESSING
RESIDUES
SEPARATION PROCESSES
SOLID WASTES
WASTE MANAGEMENT
WASTES
010800* - Coal
Lignite
& Peat- Waste Management