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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:
 [1]
  1. (Ames, IA)
Issue Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA; Iowa State University, Ames, IA (US)
OSTI Identifier:
864653
Patent Number(s):
4397822
Application Number:
06/424,703
Assignee:
Murtha, Marlyn J. (Ames, IA) AMES
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; recovery; alumina; fly; ash; improvement; lime-sinter; recovering; pulverized; coal; disclosed; addition; 10; weight; percent; carbon; sulfur; ash-calcium; carbonate; mixture; increase; sintering; temperatures; percent carbon; coal fly; pulverized coal; fly ash; weight percent; calcium carbonate; carbonate mixture; sintering temperature; mixture increase; sinter process; /423/

Citation Formats

Murtha, Marlyn J. Process for the recovery of alumina from fly ash. United States: N. p., 1983. Web.
Murtha, Marlyn J. Process for the recovery of alumina from fly ash. United States.
Murtha, Marlyn J. Tue . "Process for the recovery of alumina from fly ash". United States. https://www.osti.gov/servlets/purl/864653.
@article{osti_864653,
title = {Process for the recovery of alumina from fly ash},
author = {Murtha, Marlyn 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}
}

Patent:

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