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Heap Leaching Studies on Uranium Ore. Phase V: Experimental Studies.

Authors
Merritt-RC; Peterson-H; Wentz-CN; Harris-M
Source
NTIS: PB 293-578 :221 pages
Link
NIOSHTIC No.
10009480
Abstract
Experimental studies were conducted on a low-grade ore procured from Wyoming. The ore was characterized as primarily sandstone with a trace of clay mineralization and had a u3o8 content of 0.029 pct. The studies showed that acid leaching by agitation and by 2-in column percolation gave 97 and 99 pct u3o8 extraction and that the ore was less responsive to carbonate leaching than to acid leaching. Tests using a sodium carbonate lixiviant gave 69 and 82 pct u3o8 extraction for the agitation and percolation studies. Tests using an ammonium carbonate lixiviant gave 39 and 83 pct u3o8 extraction for the agitation and percolation studies. Subsequent pilot plant studies consisted of nine percolation leach tests conducted in 2-ft- diam columns, and one small-scale heap leach. These studies showed that the percolation tests using an acid lixiviant resulted in greater than 96 pct u3o8 extraction, whereas the percolation tests using carbonate lixiviants resulted in 87 pct u3o8 extraction. The pilot plant studies using acid solution showed that the rate of u3o8 extraction was directly proportional to the flow rate.
Publication Date
19780101
Document Type
CP; Final Contract Report;
Fiscal Year
1978
NTIS Accession No.
PB-293578
NTIS Price
A11
Identifying No.
OFR 18-79
NIOSH Division
SLRC;
Source Name
NTIS: PB 293-578
State
CO; WY;
Performing Organization
Colorado School of Mines Research I
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