Process for the recovery of alumina from fly ash

Title: Process for the recovery of alumina from fly ash

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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:

Murtha, Marlyn J ^[1]

Ames, IA

Issue Date:: 1983-08-09

Research Org.:: Ames Lab., Ames, IA (United States); Iowa State University, Ames, IA (US)

OSTI Identifier:: 864653

Patent Number(s):: 4397822

Application Number:: 06/424,703

Assignee:: Murtha, Marlyn J. (Ames, IA)

Patent Classifications (CPCs):: C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS

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C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
C01F7/08 - by treating aluminous minerals with sodium carbonate {, e.g. sinter processes

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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.

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                    Murtha, Marlyn J. Process for the recovery of alumina from fly ash.  United States.

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                    Murtha, Marlyn J. Tue .  
        "Process for the recovery of alumina from fly ash".  United States.  https://www.osti.gov/servlets/purl/864653.

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@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}

}

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