发明名称 |
Process for preparing ammonium metatungstate |
摘要 |
A process for preparing ammonium metatungstate using ammonium paratungstate as raw material comprising: (A) leaching wet ammonium paratungstate with nitric acid to obtain a dilute solution of ammonium metatungstate; (B) concentrating the dilute solution of ammonium metatungstate to be a concentrated solution of ammonium metatungstate; and (C) spray-drying the concentrated solution of ammonium metatungstate to obtain powder of ammonium metatungstate. |
申请公布号 |
AU2009350898(A1) |
申请公布日期 |
2012.02.09 |
申请号 |
AU20090350898 |
申请日期 |
2009.12.30 |
申请人 |
JIANGXI RARE EARTH AND RARE METALS TUNGSTEN GROUPCORPORATION |
发明人 |
LUO, ZHANGQING |
分类号 |
C01G41/00 |
主分类号 |
C01G41/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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