Experimental processing of salt slags from an aluminum dross furnace
The Federal Bureau of Mines has developed a hydrometallurgical method to recover aluminum, aluminum oxide, and fluxing salts from aluminum salt slags. The slag is leached with water at room temperature to produce a saturated brine slurry. Screening of the slurry yields an aluminum-rich fraction that can be returned to the dross furnace. The remaining slurry is vacuum filtered, yielding a clear brine solution and an aluminum oxide filter cake. Evaporation of the clear filtrate produces a high-purity fluxing salt for reuse in the dross furnace. Over 80 pct of the metallic aluminum is recovered in the aluminum-rich oversize fraction, while essentially all the fluxing salts are recovered by evaporation. This report contains the final results of an investigation on a process research unit scale, an economic evaluation of the method, and recommendations to further improve the process.
- Research Organization:
- Bureau of Mines, Washington, DC (USA)
- OSTI ID:
- 5029178
- Report Number(s):
- BM-RI-8446
- Country of Publication:
- United States
- Language:
- English
Similar Records
A rotary arc furnace for aluminum dross processing
A rotary arc furnace for aluminum dross processing
Related Subjects
ALUMINIUM
MATERIALS RECOVERY
ALUMINIUM OXIDES
INDUSTRIAL WASTES
RECYCLING
SALTS
SLAGS
FURNACES
MELTING
METAL INDUSTRY
WASTE PROCESSING
ALUMINIUM COMPOUNDS
CHALCOGENIDES
ELEMENTS
INDUSTRY
MANAGEMENT
METALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PROCESSING
RECOVERY
WASTE MANAGEMENT
WASTES
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management