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US 2011/0214534 A1Published application
Method for the production of tantalum powder using reclaimed scrap as source material
OwnerJoseph Smokovich, Craig F. Hafnerinventors
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Abstract
A process for obtaining tantalum powder from tantalum containing scrap material is provided. The process includes selecting source material, such as from sintered anodes for capacitors, hydriding the source material, milling to desired particle size and surface area, dehydriding, deoxidizing, agglomerating, sifting, and acid treating to obtain tantalum powder of a desired size and purity.
Claims19
A method for producing tantalum powder from tantalum containing source material comprising the steps of:
- hydriding the source material;
- crushing and milling the hydrided source material to form a powder;
- dehydriding and agglomerate the powder to form agglomerates;
- deoxidize the agglomerated powder;
- and,
- optionally crushing and sifting the agglomerates to a desired particle size.
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Dependencies are inferred from the claim text.