Salt-soda sinter process for recovering aluminum from fly ash

Patent ·

OSTI ID:5410670

McDowell, W J; Seeley, F G

A method for recovering aluminum values from fly ash comprises sintering the fly ash with a mixture of NaCl and Na/sub 2/CO/sub 3/ to a temperature in the range 700/sup 0/ to 900/sup 0/C for a period of time sufficient to convert greater than 90% of the aluminum content of the fly ash into an acidsoluble fraction and then contacting the thus-treated fraction with an aqueous solution of nitric or sulfuric acid to effect dissolution of aluminum and other metal values in said solution.

• DOE Contract Number: W-7405-ENG-26
• Assignee: TIC; ERA-05-029262; EDB-80-083874
• OSTI ID: 5410670
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ALUMINIUM
MATERIALS RECOVERY
FLY ASH
RECYCLING
FLUE GAS
FOSSIL-FUEL POWER PLANTS
RESOURCE CONSERVATION
WASTE PRODUCT UTILIZATION
AEROSOL WASTES
ELEMENTS
GASEOUS WASTES
MANAGEMENT
METALS
POWER PLANTS
PROCESSING
RECOVERY
THERMAL POWER PLANTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management