发明名称 |
Method for preparing primary tantalum or niobium metal |
摘要 |
<p>A method of preparing primary refractory metals (e.g., primary tantalum metal) by contacting a particulate refractory metal oxide (e.g., tantalum pentoxide) with a heated gas (e.g., a plasma), is described. The heated gas comprises hydrogen gas. The temperature range of the heated gas and the mass ratio of hydrogen gas to refractory metal oxide are each selected such that: (i) the heated gas comprises atomic hydrogen; (ii) the refractory metal oxide feed material is substantially thermodynamically stabilized (i.e., the concurrent formation of suboxides that are not reduced by atomic hydrogen is minimized); and (iii) the refractory metal oxide is reduced by contact with the heated gas, thereby forming primary refractory metal (e.g., primary tantalum metal and/or primary niobium metal).</p> |
申请公布号 |
EP1866449(A1) |
申请公布日期 |
2007.12.19 |
申请号 |
EP20060738256 |
申请日期 |
2006.03.15 |
申请人 |
H. C. STARCK, INC. |
发明人 |
SHEKTER, LEONID, NATAN;SIMKINS, LEAH, F.;GREVILLE, HUGH, P.;LANIN, LEONID |
分类号 |
C22B34/00 |
主分类号 |
C22B34/00 |
代理机构 |
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代理人 |
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地址 |
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