| 简介 |
This method for producing a molybdenum granulated powder is characterized by comprising : a step in which water is injected into a container, and the water is heated to 50 to 80°C; a step in which a binder is added to the heated water; a step in which an aqueous solution containing molybdenum is prepared by loading molybdenum powder with an average particle size of 1 to 10 μm, to which at least one type of rare earth element or rare earth compound has been added, while stirring the water; and a step in which the aqueous solution containing molybdenum is loaded in a spray dryer in which, when the rotation speed of a rotator of the spray dryer is regarded as A (rpm), and the average particle size of the granulated powder to be prepared is regarded as B (μm), A/B ranges from 50 to 700, and the aqueous solution containing molybdenum is dispersed by the rotator and then dried to prepare a molybdenum granulated powder with a prescribed average particle size. The abovementioned method enables a molybdenum granulated powder having the intended average particle size, and containing a rare earth element or rare earth compound, to be produced at a high yield. |
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