Method of manufacturing niobium and/or tantalum powder

Details Method of manufacturing niobium and/or tantalum powder Method of manufacturing niobium and/or tantalum powder

2005-02-15

2005-02-15

Wyszomierski, George (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

C075S368000

Reexamination Certificate

active

06855185

ABSTRACT:
A method of manufacturing niobium and/or tantalum powder consisting of: a first-stage reduction process of reducing niobium and/or tantalum oxides with alkali metals and/or alkaline-earth metals to obtain low-grade oxide powder represented by (NbTa) Ox, where x=0.06 to 0.35, a process of removing the oxide of alkali metals and/or alkaline-earth metals generated in the first-stage reduction process, and a second-stage reduction process of reducing the low-grade oxide powder obtained in the first-stage reduction process, with a melt solution of alkali metals and alkaline-earth metals to obtain niobium and/or tantalum powder.

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patent: 2003013115 (2003-01-01), None
patent: 2003129115 (2003-05-01), None

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