00000nam 2200000za 4500 9.841335 CaOODSP 20221107152048 cr ||||||||||| 170809s1970 oncd ob f000 0 eng d CaOODSP eng n-cn--- n-cn-on M34-20/110E-PDF M34-20/110 Vezina, J. A. Some design aspects of the pressure-oxidation acid leaching of a Canadian uranium ore [electronic resource] / J.A. Vezina and W.A. Gow, Extraction Metallurgy Division. Ottawa : Queen's Printer, 1970. i, 24 p. : charts Technical bulletin ; TB 110 Cover title. "December 1969." Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references (p. 11). “An investigation was done to determine the amount of heat and compressed air or oxygen required to leach Elliot Lake ore by pressure-oxidation, acid leaching. The tests were done on a batch scale with the leaching being done in a 50-gallon autoclave. The results showed that 95% of the uranium was extracted from a typical Elliot Lake ore in three hours at a temperature of 302°F, a total gas pressure in the autoclave of 150 psi gauge and an oxygen partial pressure of about 9 psi absolute. To maintain these conditions when the oxygen is supplied as compressed air would require 2207 cubic feet of dry air and 310,929 BTU per ton of ore. Conditions to obtain up to 96% uranium extraction in as little as two hours were also determined. The highest extraction rates and extractions, which were obtained with oxygen partial pressures of about 20 psi absolute, would necessitate the oxygen being supplied as compressed oxygen. The cost of heat and compressed air or oxygen to extract 95-96 per cent uranium in 2 to 4 hours by acid pressure oxidation would be in the range of $0.39 to $0.57 per ton of ore treated"--Abstract, p. i. gccst Minerals gccst Processing Gow, W. A. Canada. Natural Resources Canada. Canada. Mines Branch. Technical bulletin (Canada. Dept. of Energy, Mines and Resources. Mines Branch) TB 110 (CaOODSP)9.834857 PDF 2.19 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M34-20/M34-20-110-eng.pdf 299996