The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 1998
Filed:
Sep. 16, 1997
William H Sweetser, Tucson, AZ (US);
Leonard N Hill, Silverthorne, CO (US);
Cyprus Amax Minerals Company, Englewood, CO (US);
Abstract
A method for producing MoO.sub.3 from MoS.sub.2. MoS.sub.2 is combined with water to form a slurry which is then combined with at least one oxygen-containing oxidizing gas in a reaction chamber in order to initiate oxidization and conversion of MoS.sub.2 into MoO.sub.3. The oxidization and conversion of MoS.sub.2 into MoO.sub.3 is terminated before complete conversion of MoS.sub.2 to MoO.sub.3 takes place in order to generate a solid reaction product comprising MoO.sub.3 and unreacted MoS.sub.2 in combination with a residual liquid product comprising dissolved Mo therein. The oxidization and conversion process may be terminated when about 70-95% by weight MoS.sub.2 has been converted to MoO.sub.3. Thereafter, the solid reaction product is separated from the residual liquid product and the residual liquid product combined with at least one extractant in order to generate a liquid fraction containing dissolved Mo. The liquid fraction containing dissolved Mo is then transferred back to the reaction chamber so that the dissolved Mo is combined with additional incoming supplies of MoS.sub.2. Unreacted MoS.sub.2 is removed from the solid reaction product and transferred back to the reaction chamber also for combination with additional incoming supplies of MoS.sub.2.