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Title: Salt-soda sinter process for recovering aluminum from fly ash

Abstract

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.

Inventors:
;
OSTI Identifier:
5410670
Assignee:
TIC; ERA-05-029262; EDB-80-083874
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

McDowell, W.J., and Seeley, F.G. Salt-soda sinter process for recovering aluminum from fly ash. United States: N. p., Web.
McDowell, W.J., & Seeley, F.G. Salt-soda sinter process for recovering aluminum from fly ash. United States.
McDowell, W.J., and Seeley, F.G. . "Salt-soda sinter process for recovering aluminum from fly ash". United States.
@article{osti_5410670,
title = {Salt-soda sinter process for recovering aluminum from fly ash},
author = {McDowell, W.J. and Seeley, F.G.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {},
month = {}
}