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1.发明公开PROCESS FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGSTEN, APPARATUS FOR PRODUCING SODIUM TUNGSTATE, AND PROCESS FOR PRODUCING AQUEOUS SODIUM TUNGSTATE SOLUTION 审中-公开用于生产钨酸钠，方法TUNGSTENSAMMLUNG，器具，用于产生钨酸钠和方法制备含水NATRIUMTUNGSTATLÖSUNG
公开(公告)号：EP2412676A1
公开(公告)日：2012-02-01
申请号：EP10750763.4
申请日：2010-03-05
Inventor： YAMAMOTO, Yoshiharu , SASAYA, Kazuo , FUDO, Takayuki , NAKANO, Akira , YAMANAKA, Syunsuke , IGUCHI, Takahisa , SATO, Fumiatsu , IKEGAYA, Akihiko
IPC: C01G41/00
CPC classification number: C22B34/36 , B01J8/10 , B01J19/28 , B01J2219/0004 , B01J2219/00132 , B01J2219/00157 , C01G23/005 , C01G35/00 , C01G37/02 , C01G37/14 , C01G41/00 , C01G41/003 , C01G41/02 , C01G51/42 , C01G53/42 , C01P2002/72 , C22B7/001 , C22B7/006 , Y02P10/214 , Y02P10/234 , Y02W30/54
Abstract: Provided are a method for producing sodium tungstate by supplying an oxidant (4) made of sodium nitrate or sodium nitrite to bring a tungsten containing material (3) and the oxidant (4) into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product (9); 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 (9) containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method.
Abstract translation: 提供的是用于通过供给氧化剂的氧化剂生产钨酸钠的方法（4）制成硝酸钠或亚硝酸钠以使钨含有材料（3）和（4）代入与海誓山盟在大气接触含氧，从而连续 产生反应产物（9）; 使用该方法收集钨的方法; 以及一种用于制造钨酸钠装置。 这样提供了用于生产一个钨酸钠溶液wässrige的方法，其中还原剂被引入到熔体（9），其含有上述反应产物的所有其然后在水中溶解; 以及使用该方法收集钨的方法。
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Patent Agency Ranking
公开(公告)号：EP2474634B1
公开(公告)日：2019-03-20
申请号：EP10809899.7
申请日：2010-08-11
Inventor： OKUNO, Takuya , HIROSE, Kazuhiro , MORIGUCHI, Hideki , IKEGAYA, Akihiko , SASAYA, Kazuo , YAMAMOTO, Yoshiharu
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公开(公告)号：EP2474634A1
公开(公告)日：2012-07-11
申请号：EP10809899.7
申请日：2010-08-11
Inventor： OKUNO, Takuya , HIROSE, Kazuhiro , MORIGUCHI, Hideki , IKEGAYA, Akihiko , SASAYA, Kazuo , YAMAMOTO, Yoshiharu
Abstract: There are provided a cemented carbide high in thermal diffusivity and excellent in wear resistance, and a cutting tool including a base material formed of this cemented carbide. The cemented carbide is a WC based cemented carbide in which a hard phase mainly constituted of WC grains is bound by a binder phase mainly constituted of Co, and is used for a cutting tool. The binder phase is substantially constituted of Co, or Co and Ni. A total content of Co and Ni is not less than 4.5 mass % and not more than 15 mass %. In this cemented carbide, the WC grains have an average diameter of not less than 0.4 µm and not more than 4 µm. Assuming that the average diameter of the WC grain is represented by x (µm), the cemented carbide has a thermal diffusivity X (cm 2 /sec) satisfying X > 0.055x + 0.238. The cemented carbide can further contain one or more elements selected from Cr, Ta, Nb, Zr, and Ti at not less than 0.05 mass % and not more than 5 mass % in total.
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公开(公告)号：EP2375438B1
公开(公告)日：2013-05-29
申请号：EP09831885.0
申请日：2009-12-08
Applicant: A.L.M.T. Corp.
Inventor： NAKABAYASHI, Seiji , KATOH, Masahiro , YAMAMOTO, Yoshiharu , YOSHIDA, Toshihiko , HASEGAWA, Norihiko
IPC: H01J9/42 , H01J61/073 , H01J1/146
CPC classification number: H01J1/146 , H01B1/08 , H01J9/42 , H01J61/0735 , H01J61/0737
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5.发明公开PROCESS FOR PRODUCTION OF AQUEOUS AMMONIUM TUNGSTATE SOLUTION 审中-公开VERFAHREN ZUR HERSTELLUNG EINERWÄSSRIGENAMMONIUM-WOLFRAM-LÖSUNG
公开(公告)号：EP2543639A1
公开(公告)日：2013-01-09
申请号：EP10847014.7
申请日：2010-03-05
Applicant: National University Corporation Nagoya University , A.L.M.T. Corp. , Sumitomo Electric Hardmetal Corp. , Sumitomo Electric Industries, Ltd.
Inventor： ITO, Hideaki , ITAKURA, Takeshi , YAMAMOTO, Yoshiharu , SASAYA, Kazuo , OKUNO, Takuya , SATO, Fumiatsu , YAMANAKA, Syunsuke , IKEGAYA, Akihiko
IPC: C01G41/00
CPC classification number: C01G41/00 , C01P2006/80 , G10L13/08 , G10L15/06 , G10L15/187
Abstract: A method for producing an ammonium tungstate aqueous solution includes the steps of: adding sulfuric acid to a solution containing tungstate ions; bringing the solution having the sulfuric acid added therein, into contact with an anion exchange resin; and bringing the anion exchange resin into contact with an aqueous solution containing ammonium ions.
Abstract translation: 一种钨酸铵水溶液的制造方法，其特征在于，在含有钨酸盐离子的溶液中添加硫酸， 将其中加入硫酸的溶液与阴离子交换树脂接触; 并使阴离子交换树脂与含有铵离子的水溶液接触。
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6.发明公开TUNGSTEN ELECTRODE MATERIAL AND THERMAL ELECTRON EMISSION CURRENT MEASUREMENT DEVICE 有权Wolfram-Elektroden材料和Verfahren zur Herstellung死亡材料
公开(公告)号：EP2375438A1
公开(公告)日：2011-10-12
申请号：EP09831885.0
申请日：2009-12-08
Applicant: A.L.M.T. Corp.
Inventor： NAKABAYASHI, Seiji , KATOH, Masahiro , YAMAMOTO, Yoshiharu , YOSHIDA, Toshihiko , HASEGAWA, Norihiko
CPC classification number: H01J1/146 , H01B1/08 , H01J9/42 , H01J61/0735 , H01J61/0737
Abstract: Provided is a tungsten electrode material that can improve the life of an electrode than conventional by the use of a material in place of thorium oxide. The tungsten electrode material includes a tungsten base alloy and oxide particles dispersed in the tungsten base alloy, wherein the oxide particle is an oxide solid solution in which a Zr oxide and/or a Hf oxide and an oxide of at least one or more kinds of rare earth elements selected from Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu are solid-dissolved.
Abstract translation: 提供了一种钨电极材料，其可以通过使用代替氧化钍的材料来改善电极的寿命。 所述钨电极材料包含钨基合金和分散在所述钨基合金中的氧化物粒子，其中，所述氧化物粒子是氧化物固溶体，其中，Zr氧化物和/或Hf氧化物和至少一种以上的氧化物 选自Sc，Y，La，Ce，Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb和Lu的稀土元素是固溶的。
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