Accession Number : ADA297705

Title :   Air Oxidation of Uranous Solutions,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE MINERAL ENGINEERING LAB

Personal Author(s) : Pannell, James H.

PDF Url : ADA297705

Report Date : 21 DEC 1950

Pagination or Media Count : 22

Abstract : The oxidation of uranous solution s by air has been studied at the University of California, Radiation Laboratory and briefly by chemists interested in the titrimetric determination of uranium but seems to have received less attention by those concerned with the extraction of uranium from ores. This is in spite of the development of methods for separating uranium by precipitation of a uranous phosphate after reduction of U(VI) to U(IV) in leach liquors, as practiced on Rand ores by GML and MIT (e.g. MITG-A85, -A9O, -A92, -A99, and -A103) on phosphate ores by BMI and MIT (MITG-250) and on shales by Y-12 (Y-464). Moreover, economic considerations preclude the possibility of preventing re-oxidation by maintenance of a very low pH as is done in analytical work. It was in connection with a systematic study of uranous phosphate (MITG-245) that tests were begun to determine roughly the rate of oxidation of uranous solutions by air. Completion of the phosphate investigation presented an opportunity for a more intensive study of this oxidation phenomenon. jg p.5

Descriptors :   *AIR, *OXIDATION, *PHOSPHATES, *URANIUM COMPOUNDS, MAINTENANCE, IONS, SOLUTIONS(MIXTURES), PRECIPITATION, EXTRACTION, PH FACTOR, LEACHING, RADIOLOGICAL LABORATORIES, ORES(NONMETALLIC), URANYL RADICALS.

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Radiation and Nuclear Chemistry
      Radioactiv, Radioactive Wastes & Fission Prod

Distribution Statement : APPROVED FOR PUBLIC RELEASE