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公开(公告)号：US20180023168A1
公开(公告)日：2018-01-25
申请号：US15546038
申请日：2015-12-08
CPC分类号： C22B3/42 , C22B3/22 , C22B3/44 , C22B59/00 , Y02P10/234
摘要： Provided is a method for recovering scandium with which scandium can be efficiently recovered as high purity scandium oxide from a scandium-containing solution containing impurities such as iron without causing problems such as increased cost and safety problems. According to the method for recovering scandium according to the present invention, the pH of a solution containing scandium and iron (scandium-containing solution) is adjusted within the range of not less than −0.5 and less than 1, then scandium oxalate is obtained by adding the pH adjusted solution to an oxalic acid solution, and the scandium oxalate is roasted into scandium oxide.
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公开(公告)号：US20180056399A1
公开(公告)日：2018-03-01
申请号：US15559845
申请日：2016-03-16
发明人： Shin-ichi Heguri , Yoshitomo Ozaki , Kazuyuki Takaishi , Yasuo Doi , Osamu Ikeda , Ryoma Yamaguma , Yohei Kudo
CPC分类号： B22F9/26 , B22F3/16 , B22F2201/013 , B22F2301/15 , C22B3/08 , C22B23/043 , C22B23/0461 , C22B23/0476 , C22B23/0484
摘要： Provided is a production method for producing coarse particles of high purity Co powder from a cobalt ammine sulfate complex solution using fine Co powder and using industrially inexpensive H2 gas.
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公开(公告)号：US20180257143A1
公开(公告)日：2018-09-13
申请号：US15759356
申请日：2016-07-11
摘要： A method for manufacturing nickel powder whereby a reduction in production efficiency due to abrasion of a flash vessel connected to a pressurized container can be suppressed when nickel powder is generated using the pressurized container and subsequently recovered. The method for manufacturing nickel powder comprises charging a pressurized container with a nickel sulfate ammine complex solution and seed crystals, adding hydrogen gas to the pressurized container, and reducing the nickel included in the nickel sulfate ammine complex solution, wherein, when a nickel powder slurry obtained in the pressurized container is extracted to a flash vessel connected to the pressurized container, the slurry is extracted to the flash vessel while the supply rate of the nickel ammine complex solution to the pressurized container and/or the extraction rate of the nickel slurry from the pressurized container is controlled so the liquid level in the pressurized container is in a fixed range.
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公开(公告)号：US10156002B2
公开(公告)日：2018-12-18
申请号：US15546038
申请日：2015-12-08
摘要： Provided is a method for recovering scandium with which scandium can be efficiently recovered as high purity scandium oxide from a scandium-containing solution containing impurities such as iron without causing problems such as increased cost and safety problems. According to the method for recovering scandium according to the present invention, the pH of a solution containing scandium and iron (scandium-containing solution) is adjusted within the range of not less than −0.5 and less than 1, then scandium oxalate is obtained by adding the pH adjusted solution to an oxalic acid solution, and the scandium oxalate is roasted into scandium oxide.
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