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Title: Process for the recovery of alumina from fly ash

Abstract

An improvement in the lime-sinter process for recovering alumina from pulverized coal fly ash is disclosed. The addition of from 2 to 10 weight percent carbon and sulfur to the fly ash-calcium carbonate mixture increase alumina recovery at lower sintering temperatures.

Inventors:
Issue Date:
OSTI Identifier:
7159468
Patent Number(s):
4397822 A
Application Number:
PPN: US 6-424703
Assignee:
PTO; EDB-94-121146
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Resource Relation:
Patent File Date: 27 Sep 1982
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 20 FOSSIL-FUELED POWER PLANTS; ALUMINIUM OXIDES; MATERIALS RECOVERY; FLY ASH; ADDITIVES; CALCIUM CARBONATES; LIME-SODA SINTER PROCESS; OPTIMIZATION; AEROSOL WASTES; ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; ASHES; CALCIUM COMPOUNDS; CARBON COMPOUNDS; CARBONATES; CHALCOGENIDES; COMBUSTION PRODUCTS; MANAGEMENT; OXIDES; OXYGEN COMPOUNDS; PROCESSING; RESIDUES; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; 010800* - Coal, Lignite, & Peat- Waste Management; 200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions

Citation Formats

Murtha, M.J. Process for the recovery of alumina from fly ash. United States: N. p., 1983. Web.
Murtha, M.J. Process for the recovery of alumina from fly ash. United States.
Murtha, M.J. Tue . "Process for the recovery of alumina from fly ash". United States.
@article{osti_7159468,
title = {Process for the recovery of alumina from fly ash},
author = {Murtha, M.J.},
abstractNote = {An improvement in the lime-sinter process for recovering alumina from pulverized coal fly ash is disclosed. The addition of from 2 to 10 weight percent carbon and sulfur to the fly ash-calcium carbonate mixture increase alumina recovery at lower sintering temperatures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {8}
}