公开(公告)号：EP1799380B1

公开(公告)日：2018-09-12

申请号：EP05800895.4

申请日：2005-09-19

申请人： H.C. Starck Tantalum and Niobium GmbH

发明人： LEONID NATAN, Shekhter ,  LEONID, Lanin ,  CONLON, Anastasia, M.

IPC分类号： B22F9/20 ,  B22F9/22 ,  C22C1/04 ,  C22B5/04 ,  C22B34/24 ,  H01G9/052 ,  C22B26/22

CPC分类号： C22B5/04 ,  B22F9/20 ,  B22F9/22 ,  C22B26/22 ,  C22B34/24 ,  C22C1/045 ,  H01G9/0525

摘要： A method of producing a refractory metal powder that includes providing a metal powder containing magnesium tantalate or magnesium niobate; and heating the powder in an inert atmosphere in the presence of magnesium, calcium and/or aluminum to a temperature sufficient to remove magnesium tantalate or magnesium niobate from the powder and/or heating the powder under vacuum to a temperature sufficient to remove magnesium tantalate or magnesium niobate from the powder, the heating steps being performed in any order. The metal powder can be formed into pellets at an appropriate sintering temperature, which can be formed into electrolytic capacitors.

公开(公告)号：EP2237910A4

公开(公告)日：2018-03-14

申请号：EP08869307

申请日：2008-10-13

申请人： NINGXIA ORIENT TANTALUM IND CO LTD

发明人： LI BIN ,  PAN LUNTAO ,  PAN LUNTAO ,  ZHENG AIGUO ,  MA YUEZHONG ,  CHENG YUEWEI ,  DONG XUECHENG ,  ZHANG XUEQING ,  WANG ZHIDAO ,  ZHU BAOJUN

IPC分类号： H01G9/042 ,  B22F1/00 ,  B22F9/04 ,  C22B34/24 ,  C22C1/04 ,  H01G9/00 ,  H01G9/052

CPC分类号： H01G9/042 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/045 ,  H01G9/0029 ,  H01G9/052 ,  H01G9/0525 ,  B22F9/22 ,  B22F1/0085 ,  B22F2201/02

摘要： The present invention relates to valve metal particles uniformly containing nitrogen and a method for preparing the same, and a valve metal green pellet and a sintered pellet made from the particles, and an electrolytic capacitor anode. The present invention provides valve metal particles uniformly containing nitrogen, wherein the difference ratio of nitrogen contents of particles is 20% or less. The present invention provides a process for preparing said valve metal particles uniformly containing nitrogen, wherein the raw material particles of the valve metal were heated in a nitrogen-containing gas at a temperature of 200° C. or less for 2 hours or more. The present invention also provides a valve metal green pellet made from said valve metal particles. The present invention also provides a valve metal sintered pellet.

公开(公告)号：EP3265593A1

公开(公告)日：2018-01-10

申请号：EP16707557.1

申请日：2016-03-01

申请人： UNIVERSITY OF LEEDS

发明人： JHA, Animesh ,  HARA, Yotamu Stephen Rainford ,  PARIRENYATWA, Stephen ,  SANCHEZ-SEGADO, Sergio

IPC分类号： C22B1/02 ,  C22B34/12 ,  C22B34/24

CPC分类号： C22B34/124 ,  C22B1/02 ,  C22B34/1236 ,  C22B34/24 ,  Y02P10/212

摘要： The present invention relates to a process for recovering a primary metal residue from a metal-containing composition.

公开(公告)号：EP2718471A1

公开(公告)日：2014-04-16

申请号：EP12731731.1

申请日：2012-06-08

申请人： North-West University

发明人： VAN DER WESTHUIZEN, Derik Jacobus ,  LACHMANN, Gerhard ,  KRIEG, Henning Manfred

IPC分类号： C22B3/00 ,  C22B34/14 ,  C22B34/24

CPC分类号： C22B3/0005 ,  C22B11/04 ,  C22B34/14 ,  C22B34/24 ,  Y02P10/234

摘要： The present invention relates to a method for the selective separation and recovery of metal solutes from an acidic aqueous solution by solvent extraction techniques. The present invention further relates to the selective separation and recovery of hafnium and zirconium metal solutes; of niobium and tantalum metal solutes; and of the platinum group metal (hereinafter referred to as "PGM") solutes from solution by the use of membrane based solvent extraction. According to one aspect thereof, the present invention provides a method for the selective separation and recovery of hafnium and zirconium metal solutes from an acidic aqueous solution, the method including the steps of: a) providing an acidic aqueous solution, the acidic aqueous solution including a source of at least two metal solutes wherein the at least two metal solutes are selected from the group consisting of hafnium and zirconium; b) contacting an organic medium with an aqueous stripping solution to form a water-in-oil emulsion; c) introducing the water-in-oil emulsion to a lumen side of a hollow fiber membrane contactor; d) introducing the acidic aqueous solution to a shell side of the hollow fiber membrane contactor; e) allowing one or more metal solutes to be transferred from the acidic aqueous solution to the water-in-oil emulsion; f) recovering a first metal solute from the water-in-oil emulsion; g) optionally, repeating any one or more of the steps described herein above where the recovery of a second and/or further metal solute is required; and h) optionally, repeating any one or more of the said steps where the purity of the first, second and/or further metal solute is desired to be improved. The present invention further provides for hafnium and zirconium metal solutes; of niobium and tantalum metal solutes; and of the platinum group metal solutes, recovered by the method of the present invention, substantially as described herein.

公开(公告)号：EP2661513A1

公开(公告)日：2013-11-13

申请号：EP12700383.8

申请日：2012-01-06

申请人： Areva Mines ,  Eramet

发明人： AGIN, Jérôme ,  DURUPT, Nicolas ,  GRECO, Antoine ,  HAMMY, Fatima ,  LAROCHE, Guillaume ,  THIRY, Jacques

IPC分类号： C22B1/02 ,  C22B1/06 ,  C22B34/24 ,  C22B59/00 ,  C22B60/02 ,  C22B3/06 ,  C22B3/08

CPC分类号： C22B1/02 ,  C22B1/06 ,  C22B3/08 ,  C22B34/24 ,  C22B59/00 ,  C22B60/02 ,  C22B60/0204 ,  C22B60/0208 ,  Y02P10/216 ,  Y02P10/234

摘要： The main subject-matter of the present invention is a process for the dissolution of at least one element chosen from niobium and tantalum and at least one other element chosen from uranium and the rare earth elements, advantageously for the dissolution of niobium, tantalum, uranium and rare earth elements, present in an ore or an ore concentrate. Said process comprises: - the roasting of a material, comprising said elements, which material is mixed, dry or/in the presence of water, with an acid roasting agent in order to obtain a calcine; said material consisting of said ore or concentrate or having been obtained from said ore or said concentrate and said acid roasting agent providing for roasting in a sulphate medium; and - the dissolution in an aqueous solution of the calcine obtained in order to obtain a slurry, the liquid fraction of which includes iron, in the ferric state, at a concentration of at least 50 g/l, advantageously of at least 70 g/l and very advantageously of at least 120 g/l.

公开(公告)号：EP2475792A1

公开(公告)日：2012-07-18

申请号：EP10757838.7

申请日：2010-09-09

申请人： The South African Nuclear Energy Corporation Limited ,  Retief, Nelius Dempers

发明人： NEL, Johannes, Theodorus ,  DU PLESSIS, Wilhelmina ,  CROUSE, Philippus, Lodewyk ,  LE ROUX, Johannes, Petrus ,  RETIEF, Willem Dempers

IPC分类号： C22B3/10 ,  C22B34/10 ,  C22B34/12 ,  C22B34/14 ,  C22B34/24

CPC分类号： C22B3/10 ,  C22B34/10 ,  C22B34/1213 ,  C22B34/14 ,  C22B34/24 ,  Y02P10/234

摘要： A process for treating a feedstock is provided. The feedstock comprises a mineral and/or a metal oxide/silicate derived from or associated with a mineral. The process comprises treating the feedstock by reacting, in a reaction step, the mineral and/or the metal oxide/silicate derived from or associated with a mineral, with an ammonium acid fluoride having the generic formula NH
4 F⋅xHF, wherein 1

公开(公告)号：EP2312915A1

公开(公告)日：2011-04-20

申请号：EP09804824.2

申请日：2009-06-24

申请人： Inter-University Research Institute Corporation High Energy Accelerator Research Organization ,  Tokyo Denkai Co., Ltd. ,  TKX Corporation

发明人： SAITO, Kenji ,  TAKEUCHI, Koichi ,  YAMAZAKI, Hiroshi

IPC分类号： H05H7/20 ,  C22B9/22 ,  C22B34/24

CPC分类号： H05H7/20 ,  B21D22/20 ,  B21D35/005 ,  C22B34/24 ,  C22C27/00 ,  Y10T29/49014

摘要： To provide a manufacturing method of a superconducting radio-frequency acceleration cavity used in a charged particle accelerator enabling the manufacturing with few waste amounts of the niobium material at low cost in a short time, the manufacturing method has each of the steps of (a) obtaining an ingot made from a disk-shaped niobium material, (b) slicing and cutting the niobium ingot into a plurality of niobium plates each with a predetermined thickness, by vibrating multiple wires back and forth while spraying fine floating abrasive grains with the niobium ingot supported, (c) removing the floating abrasive grains adhered to the sliced niobium plates, and (d) performing deep draw forming on the niobium plates and thereby obtaining a niobium cell of a desired shape.

摘要翻译： 为了提供一种用于带电粒子加速器的超导射频加速腔的制造方法，其能够在短时间内以低成本制造少量的铌材料，所以制造方法具有以下步骤：（a） 获得由盘状铌材料制成的铸锭，（b）将铌锭切割并切割成具有预定厚度的多个铌板，通过在铌锭中喷洒细的浮动磨料颗粒来回振动多根钢丝 （c）去除附着在切片铌板上的浮动磨粒，（d）在铌板上进行深冲压成形，从而得到所需形状的铌电池。

公开(公告)号：EP2169086A1

公开(公告)日：2010-03-31

申请号：EP09175881.3

申请日：2006-09-07

申请人： H.C. Starck GmbH

发明人： Löffelholz, Josua ,  Hilpert, Jürgen

IPC分类号： C22B34/24 ,  B22F9/24 ,  H01G9/052

CPC分类号： H01G2/00 ,  B22F1/0003 ,  B22F9/24 ,  B22F2998/00 ,  C22B5/00 ,  C22B34/24 ,  C22C27/02 ,  H01G9/0525 ,  Y02P10/212 ,  Y10T428/12 ,  Y10T428/2982 ,  B22F1/0018 ,  B22F1/0096

摘要： Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Ventilmetalles, umfassend das Schmelzen eines Gemisches, das einen Ventilmetall-Precursor und Verdünnungsmittel enthält, in einem ersten Gefäß, nach diesem Verfahren hergestellte Pulver sowie deren Verwendung.

摘要翻译： 阀金属的生产包括将阀金属前体（2）和稀释剂（4）的混合物熔合在第一容器（10）中。 将产物在相同或不同的温度和压力条件下转移到第二容器（20），引发前体向阀金属的转化。 包括以下独立权利要求：（A）通过REM成像确定的平均晶粒形状因子为0.65〜1.00的阀金属粉末; （B）使用粉末生产电容器或通过冷气喷涂工作; （C）使用粉末生产的电容器; （D）含有粉末的烧结金属制品; 和（E）包含电容器的电气和电子设备。

公开(公告)号：EP1761353B1

公开(公告)日：2009-06-10

申请号：EP05773483.2

申请日：2005-06-20

申请人： H.C. Starck Inc.

发明人： SHEKHTER, Leonid, Natan ,  MCCORMICK, Edward, V. ,  SIMKINS, Leah, F. ,  SCHIELE, Edward, K.

IPC分类号： B22F9/20 ,  C22B34/24

CPC分类号： H01G9/042 ,  B22F9/20 ,  C22B5/04 ,  C22B34/1268 ,  C22B34/1277 ,  C22B34/24 ,  H01G9/0525

摘要： A method of producing a refractory metal powder by (A) combining (i) an oxide particle component and (ii) a reducing agent; (B) forming a substantially uniform mixture of (i) and (ii); (C) continuously feeding the mixture into a furnace; (D) igniting the mixture at a reaction zone and starting a reaction that is sufficiently exothermic to form a high temperature flash; (E) starting a reaction that is sufficiently exothermic to form a high temperature self-sustaining flash; and (F) producing a free-flowing reduced oxide powder.

公开(公告)号：EP1957684A2

公开(公告)日：2008-08-20

申请号：EP06791958.9

申请日：2006-09-07

申请人： H.C. Starck GmbH

发明人： LÖFFELHOLZ, Josua ,  HILPERT, Jürgen

IPC分类号： C22B34/24 ,  H01G9/052 ,  B22F9/24

CPC分类号： H01G2/00 ,  B22F1/0003 ,  B22F9/24 ,  B22F2998/00 ,  C22B5/00 ,  C22B34/24 ,  C22C27/02 ,  H01G9/0525 ,  Y02P10/212 ,  Y10T428/12 ,  Y10T428/2982 ,  B22F1/0018 ,  B22F1/0096

摘要： The invention relates to a method for producing a valve metal. The inventive method comprises the step of melting, in a first vessel, a mixture including a valve metal precursor and a diluent. The invention also relates to powders produced according to said method and to the use thereof.