Process for producing ammonium molybdate from molybdenum trioxide

Patent · Tue Apr 05 04:00:00 EDT 1988

OSTI ID:7148569

Cheresnowsky, M J

A process for producing ammonium molybdate from molybdenum trioxide having iron as an impurity is described comprising: (a) digesting the molybdenum trioxide with ammonia in a sealed vessel which is equipped with one or more stirrers at a temperature of from about 50/sup 0/C. to about 60/sup 0/C., at a pressure of from about 0.5 psig to about 15 psig, with the amount of ammonia being equal to from about 1.01 to about 1.8 times the stoichiometric amount needed to form normal ammonium molybdate, to form an ammonium molybdate solution containing essentially all of the starting molybdenum and a digestion residue containing essentially all of the iron; and (b) separating the solution from the residue.

• Assignee: GTE Products Corp., Stamford, CT
• Patent Number(s): US 4735791
• OSTI ID: 7148569
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AMMONIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTORS
ELEMENTS
IRON
METALS
MIXING
MOLYBDATES
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PROCESSING
PRODUCTION
REFRACTORY METAL COMPOUNDS
RESIDUES
SEPARATION PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS