Appeal No. 1997-0448 Application No. 08/327,980 B. separating the soluble molybdic oxide from the insoluble molybdenum trioxide; C. contacting the insoluble molybdenum trioxide with at least one of lime and magnesium hydroxide to form a mixture containing soluble molybdate values; D. combining the mixture of step C with the soluble molybdic oxide fraction of step B to form a mixture of soluble molybdenum values; E. contacting the aqueous mixture of step D with an organic solvent containing an extractive compound that is selective for the molybdenum values such that a majority of the metal contaminants remain in the aqueous mixture while a majority of the molybdenum values are extracted into the organic solvent; F. removing the extracted molybdenum values of step E from the organic solvent with an aqueous solution containing a stripping reagent selective for molybdenum values; G. crystallizing the extracted molybdenum values of step F; and H. calcining the crystallized molybdenum values of step G to form molybdenum trioxide of at least technical grade. The references relied on by the examiner are: Chiola et al. (Chiola) 3,598,519 Aug. 10, 1971 Barry et al. (Barry) 3,656,888 Apr. 18, 1972 Vertes et al. (Vertes) 4,046,852 Sep. 6, 1977 Sohn 4,376,647 Mar. 15, 1983 I.G. Farbenindustrie Aktiengesellschaft (GB ‘472) 331,472 Jul. 3, 1930 (published Great Britain patent specification) - 4 -Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007