Invention Application
US20140112847A1 METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGSTEN, APPARATUS FOR PRODUCING SODIUM TUNGSTATE, AND METHOD FOR PRODUCING SODIUM TUNGSTATE AQUEOUS SOLUTION
有权
用于生产钨酸钠的方法，用于收集钨酸盐的方法，用于生产黄铁矿的方法，以及用于生产黄铁矿水溶液的方法
- Patent Title: METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGSTEN, APPARATUS FOR PRODUCING SODIUM TUNGSTATE, AND METHOD FOR PRODUCING SODIUM TUNGSTATE AQUEOUS SOLUTION
- Patent Title (中): 用于生产钨酸钠的方法，用于收集钨酸盐的方法，用于生产黄铁矿的方法，以及用于生产黄铁矿水溶液的方法
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Application No.: US14139598Application Date: 2013-12-23
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Publication No.: US20140112847A1Publication Date: 2014-04-24
- Inventor: Yoshiharu Yamamoto , Kazuo Sasaya , Takayuki Fudo , Akira Nakano , Syunsuke Yamanaka , Takahisa Iguchi , Fumiatsu Sato , Akihiko Ikegaya
- Applicant: A.L.M.T. Corp. , Sumitomo Electric Industries, Ltd. , Sumitomo Electric Hardmetal Corp.
- Applicant Address: JP Tokyo JP Osaka-shi JP Itami-shi
- Assignee: A.L.M.T. Corp.,Sumitomo Electric Industries, Ltd.,Sumitomo Electric Hardmetal Corp.
- Current Assignee: A.L.M.T. Corp.,Sumitomo Electric Industries, Ltd.,Sumitomo Electric Hardmetal Corp.
- Current Assignee Address: JP Tokyo JP Osaka-shi JP Itami-shi
- Priority: JP2011-058410 20090311; JP2011-058411 20090311
- Main IPC: C22B34/36
- IPC: C22B34/36
Abstract:
Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method.
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