| 摘要 |
PURPOSE: Provided are a process and an apparatus for producing atomized powder from a molten stream of material, such as a molten metal stream, using a recirculating gas, such as helium gas. CONSTITUTION: The process for producing atomized powder using recirculating atomization gas comprises the steps: (a) feeding a swirling stream of atomizing gas, along with a stream of molten material into an atomization furnace such that the atomizing gas contacts the stream of molten material to form a spent atomizing gas and metal droplets and then solidifying the droplets to form atomized powder; (b) removing any particulates from the spent atomization gas; (c) feeding at least a portion of the particulate-free atomizing gas to a purification unit to remove selected impurities; and (d) recirculating the purified atomizing gas back into at least one atomization furnace.
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