Method for preparing a tantalum powder
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United States of America Patent
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Dec 1, 2015
Grant Date -
Nov 22, 2012
app pub date -
Aug 2, 2012
filing date -
Mar 5, 2009
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Abstract
The present invention relates to the tantalum powder and the process for preparing the same, and also relates to the electrolytic capacitor anode made of the tantalum powder. More particularly, the present invention relates to the tantalum powder having a BET surface area not more than 0.530 m2/g, Fisher mean particle size not less than 3.00 μm. The present invention relates to the process for preparing the tantalum powder, wherein the tantalum powder is prepared through reducing tantalum compound with a reducing agent, wherein the tantalum powder as seed is added during reduction, and said tantalum powder as seed is the tantalum powder that has been milled.
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