Vessel for highly pure metal melt, process for its manufacture as well as a device for the preparation of highly pure metal powder

摘要

A vessel for melting a high-purity metal has a vessel body (2) provided with a cooling jacket (12) and with an opening (10) of a predetermined size formed in the bottom thereof, and a lid (6) made of the same material as the high-purity metal to be molten and closing the bottom opening of the vessel body. Disclosed also is an apparatus for producing powder of a high-purity metal, including: a melting vessel having a vessel body provided with an opening of a predetermined size formed in the bottom thereof, and a lid made of the same material as the high-purity metal to be molten and closing the bottom opening of the vessel body; a cooling system for cooling the inner surface region of the vessel body; a beam generating device; a measuring device (26) for measuring the size of an output port formed in the lid and an analyzer; and a control device (30) which controls one or both of the beam output power of the beam generating device and the rate of cooling effected by the cooling system in accordance with the output from the measuring device.