Patent ID: 7753987

Claim:
A high vacuum in-situ refining apparatus for high-purity materials, characterized in that it comprises: a vacuum system, a refining chamber, a diffusion furnace, a crucible, a feeding and fetching system, a protective gas device and an industrial intelligent temperature controller; wherein the feeding and fetching system is connected to the refining chamber with the diffusion furnace installed at its bottom; the crucible is disposed inside the diffusion furnace, and the temperature controller is connected to the diffusion furnace through thermocouple compensating wires and conductive wires; and the vacuum system is connected with the diffusion furnace and the protective gas device respectively, wherein the diffusion furnace has two independent heating wires, the upper heating wire and the lower heating wire, respectively used for heating the upper and the lower parts of the crucible, thereby forming the temperature profile which is high at the upper part and low at the lower part of the crucible or in reverse; a cover is provided at the mouth of the crucible with small holes uniformly distributed on the cover.