发明名称 |
Method of manufacturing niobium and/or tantalum powder |
摘要 |
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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申请公布号 |
US6855185(B2) |
申请公布日期 |
2005.02.15 |
申请号 |
US20020268615 |
申请日期 |
2002.10.10 |
申请人 |
SUMITOMO METAL MINING CO., LTD. |
发明人 |
OSAKO TOSHIYUKI;KOMUKAI TETSUFUMI |
分类号 |
B22F1/00;B22F9/18;B22F9/20;C01G33/00;C01G35/00;C22B5/04;C22B5/18;C22B34/20;C22B34/24;C22C1/04;H01G9/052;(IPC1-7):B22F9/20 |
主分类号 |
B22F1/00 |
代理机构 |
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代理人 |
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地址 |
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