Preliminary leaching tests for the extraction of uranium from various Monticello Stockpile ores
Six samples of Monticello Stockpiles numbered 6, 16, 19, 20, 21, and 22 were leached with varying amounts of sulfuric acid at 50 percent solids and room temperature for four hours. Uranium extractions from 85-98 percent were obtained with 100-400 pounds of acid per ton. In general, increased leachin...
| Main Authors: | Abrams, C. S.; Moulton, Harry D.; Viklund, H. I., American Cyanamid Company. Raw Materials Development Laboratory |
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| Format: | Text |
| Language: | English eng |
| Published: |
1953
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| Subjects: | |
| Online Access: |
http://hdl.handle.net/11166/85571 http://archives.mountainscholar.org/cdm/ref/collection/p17393coll30/id/10518 |
| Summary: |
Six samples of Monticello Stockpiles numbered 6, 16, 19, 20, 21, and 22 were leached with varying amounts of sulfuric acid at 50 percent solids and room temperature for four hours. Uranium extractions from 85-98 percent were obtained with 100-400 pounds of acid per ton. In general, increased leaching time, use of NaClO3, finer grinding, had very little effect on uranium. The vanadium extractions were 20-30 percent. With the exception of Stockpile 6, the ores settled well when 0.5 pound of carboxy-methyl cellulose was used. Thickener area requirements from 2-8 sq. ft. per ton per day were obtained. The filter rates for Stockpiles 6, 16, 20 and 22 with 0.5 pound of CMC per ton were 0.6-1.2 tons per sq. ft. per day. Filter rates for Stockpiles 19 and 21 were 0.4-0.6 tons per sq. ft. per day with a cake thickness less than 1/4 inch. Soluble losses during single stage filtration were high enough to require repulping with water and re-filtration. |
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