发明名称 |
Purification method for producing high purity niobium compound and/or tantalum compound |
摘要 |
An object of the present invention is to provide a method for purifying a highly pure niobium compound and/or tantalum compound, the method enabling the purification of a highly pure niobium compound and tantalum compound in a simplified manner at a low cost. The object is met by providing a method comprising adding an organic solvent to an aqueous solution containing a niobium compound and/or tantalum compound together with impurities, and then performing extraction via the solution. A niobium compound and/or tantalum compound dissolved in a solution is allowed to precipitate, and said aqueous solution is obtained by dissolving the precipitate in water.
|
申请公布号 |
US7214362(B2) |
申请公布日期 |
2007.05.08 |
申请号 |
US20040505803 |
申请日期 |
2004.10.07 |
申请人 |
STELLA CHEMIFA KABUSHIKI KAISHA |
发明人 |
KIKUYAMA HIROHISA;WAKI MASAHIDE;IZUMI HIROTO;YAZAKI HIROFUMI;AOKI KENJI;HASHIGUCHI SHINJI;KAWAWAKI MASATSUGU;MURAKAMI YUKO |
分类号 |
C01G35/00;C01G33/00;C22B3/26;C22B34/24 |
主分类号 |
C01G35/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|