Resumes
Resumes
Richard Puopolo
View pageSkills:
Customer Service
Richard Puopolo Phones & Addresses
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714 Scenic Heights Dr, Salem, OR 97306 (503) 375-9560
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Albany, OR
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La Pine, OR
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Sisters, OR
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Klamath Falls, OR
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Marion, OR
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714 Scenic Heights Dr SE, Salem, OR 97306
Work
Position:
Administration/Managerial
Education
Degree:
Associate degree or higher
Skills
Customer Service
Publications
Us Patents
Electron-Beam Melt Refining Of Ferroniobium
View pageUS Patent:
6007597, Dec 28, 1999
Filed:
Feb 27, 1998
Appl. No.:
9/031608
Inventors:
Richard S. Puopolo - Salem OR
John Roger Peterson - Salem OR
Richard Myers - Albany OR
John Roger Peterson - Salem OR
Richard Myers - Albany OR
Assignee:
Teledyne Industries, Inc. - Albany OR
International Classification:
C21B 1110
C22B 100
C01G 3100
C22B 100
C01G 3100
US Classification:
75 1014
Abstract:
Niobium, Nb, is refined from FeNb by electron beam melt refining. The amount of the impurities in the FeNb which form suboxides with oxygen is optionally determined. Sufficient oxygen is added to form oxides with these impurities. The electron beam melt refining process is carried out at a sufficiently high temperature and under a sufficiently low vacuum so that the impurities are removed as oxides from the liquid Nb and the purified Nb is recovered. Preferably the oxygen is added as an oxygen-containing compound such as Nb. sub. 2 O. sub. 5. The recovered Nb can be subjected to additional electron beam melt refining cycles to obtain the desired purity.