公开(公告)号：US20190338431A1

公开(公告)日：2019-11-07

申请号：US16514554

申请日：2019-07-17

申请人： JX Nippon Mining & Metals Corporation

发明人： Toru IMORI ,  Kouichi TAKEMOTO

IPC分类号： C25C1/14 ,  C22B9/04 ,  G03F7/20 ,  C22B25/08

摘要： Provided is a high purity tin (Sn) having an extremely low oxygen content. A high purity tin having a tin purity of 5N (99.999% by mass, provided that carbon, nitrogen, oxygen and hydrogen are excluded) or more, wherein the high purity tin has an oxygen content of less than 10 ppb by mass, as measured by elemental analysis using Dynamic-SIMS.

公开(公告)号：US20180237313A1

公开(公告)日：2018-08-23

申请号：US15753126

申请日：2017-01-13

申请人： JX Nippon Mining & Metals Corporation

发明人： Hideyuki TAKAHASHI ,  Kouichi TAKEMOTO

IPC分类号： C01G53/09 ,  C25B1/26 ,  H01L21/285

CPC分类号： C01G53/09 ,  C01P2004/51 ,  C01P2004/60 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/80 ,  C23C16/14 ,  C23C16/45553 ,  C25B1/26 ,  H01L21/285

摘要： Provided is anhydrous nickel chloride having a total content of impurity elements other than gas components of less than 10 wt. ppm; each content of boron, sodium, magnesium, aluminum, potassium, calcium, titanium, chromium, manganese, iron, copper, zinc, arsenic, silver, cadmium, indium, tin, thallium and lead of less than 1 wt. ppm, which can be produced by a method for producing anhydrous nickel chloride comprising the steps of carrying out ion exchange membrane electrolysis in an anolyte and a catholyte separated by an anion exchange membrane using raw metal nickel as an anode, a conductive material as a cathode and high purity hydrochloric acid as an electrolytic solution, to obtain a nickel chloride solution as the anolyte; concentrating the obtained nickel chloride solution by heating it at 80 to 100° C. under atmospheric pressure to obtain a concentrated nickel chloride solution; and dehydrating and drying the resulting concentrated nickel chloride solution by heating it at 180 to 220° C. under atmospheric pressure to obtain anhydrous nickel chloride.