Technological and Economic Problems of Rare-earth Metal and Thorium Resources in Colorado, New Mexico, and Wyoming PDF Download
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Author: Francis Joseph Kelly
Publisher:
ISBN:
Category : Rare earth metals
Languages : en
Pages : 46
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Book Description
Author: Francis Joseph Kelly
Publisher:
ISBN:
Category : Rare earth metals
Languages : en
Pages : 46
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Author:
Publisher:
ISBN:
Category : Government Publications
Languages : en
Pages : 1330
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Author: Geological Survey (U.S.)
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Category : Groundwater
Languages : en
Pages : 458
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Author: United States. Congress. Senate. Interior and Insular Affairs
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Category :
Languages : en
Pages : 464
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Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 478
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Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 698
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Author: United States. Congress. Senate. Committee on Public Works
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Category : Legislative hearings
Languages : en
Pages : 1420
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Author: United States. Bureau of Mines
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Category : Mineral industries
Languages : en
Pages : 1306
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Author:
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Category : Mines and mineral resources
Languages : en
Pages : 48
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Author: Samuel Ralph Borrowman
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Category : Thorium
Languages : en
Pages : 24
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Thorium and yttrium oxides were recovered from siliceous ores of the Powderhorn, Colo., area. Processing comprised (1) acid curing and subsequent (2) acid baking, (3) leaching, and (4) solvent extraction of thorium, using a primary alkylamine, and yttrium, using di-2-ethylhexy1 phosphoric acid. About 95 pct of the contained thorium and yttrium was recovered from ore containing 1.2 pct ThO2 and 0.5 pct Y2O3. The thoria product was 99 pct ThO2 ; the yttria product was 77 pct Y2O3. A 150-to-1 concentration ratio was effected on the latter, but some contaminating lanthanon-group oxides remained.
