Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vib metal
Patent
1997-09-16
1998-09-08
Straub, Gary P.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vib metal
423 53, 423 54, 423 55, 423593, 423606, C01G 3714
Patent
active
058041516
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.
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Hill Leonard N.
Sweetser William H.
Cyprus Amax Minerals Company
Dahl Bruce E.
Nguyen Cam N.
Straub Gary P.
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