公开(公告)号：US06998029B2

公开(公告)日：2006-02-14

申请号：US10218368

申请日：2002-08-14

申请人： Kenneth L. Hardee ,  Michael S. Moats ,  Carl W. Brown, Jr. ,  Robert L. Wilhelm ,  Edward M. Halko ,  Zane A. Wade

发明人： Kenneth L. Hardee ,  Michael S. Moats ,  Carl W. Brown, Jr. ,  Robert L. Wilhelm ,  Edward M. Halko ,  Zane A. Wade

IPC分类号： C25B9/04

CPC分类号： C25C7/06 ,  C25C7/00

摘要： Various systems and methods for protecting electrowinning anodes having electrocatalytically active coatings in a bank of electrolytic cells from being damaged by reverse currents. In the first embodiment, one or more auxiliary power sources are provided that, when triggered by one or more predetermined conditions being met, keep the bank of electrolytic cells in an electrical state that is relatively harmless to the anodes having electrocatalytically active coatings. In a second embodiment, the invention is directed to a method of maintaining the polarization of anodes in an electrowinning cell positive of the cathodes (i.e. in a potential region where the anode coating is not susceptible to significant damage). In a final embodiment, the invention is directed to various methods for the installation of replacement anodes and maintenance of electrowinning cells.

公开(公告)号：US5783058A

公开(公告)日：1998-07-21

申请号：US653119

申请日：1996-06-06

申请人： H. Kirk Fowler ,  Gerald R. Pohto ,  Zane A. Wade

发明人： H. Kirk Fowler ,  Gerald R. Pohto ,  Zane A. Wade

IPC分类号： C25D17/10 ,  C25D17/12 ,  C25D5/34 ,  C25D17/00

CPC分类号： C25D17/12 ,  Y10T29/49117

摘要： An existing, usually used radial lead anode in an electroplating cell is machined to a specific radius. This provides a curved, machined surface for the lead anode to serve as a support structure. A thin gauge, dimensionally stable sheet anode of a multitude of side-by-side strip anodes is formed, with each strip anode being typically formed to a larger radius then the radius of the support structure. The sheet anode strips may be precurved into a series of chords. The strip anodes are flexed into place onto the surface of the lead support structure. Fastening these strips and the support structure together can be accomplished by a series of fastening means attached to the back of each strip anode, which means can project into or through holes in the lead support structure. Electrical connection can be provided, such as through the fastening means, with the lead support structure serving as a current distributor member. The lead support structure, which may be slightly soluble in cell electrolyte, is protected by the sheet anode. Moreover, the sheet anode is readily removable, such as for renovation of an active anode coating.

摘要翻译： 在电镀电池中的现有的，通常使用的径向引线阳极被加工到特定的半径。 这提供了用于引线阳极用作支撑结构的弯曲加工表面。 形成多个并排条形阳极的薄尺寸尺寸稳定的片状阳极，每个带​​状阳极通常形成为较大半径，然后形成支撑结构的半径。 片状阳极条可以被预加成一系列和弦。 带状阳极弯曲到位于引线支撑结构的表面上的位置。 将这些条带和支撑结构固定在一起可以通过连接到每个带状阳极的背面的一系列紧固装置来实现，这意味着可以突入或穿过引线支撑结构中的孔。 可以提供电连接，例如通过紧固装置，引线支撑结构用作电流分配器构件。 可能微溶于电池电解质的引线支撑结构被片状阳极保护。 此外，片状阳极易于移除，例如用于更换活性阳极涂层。

公开(公告)号：US5454925A

公开(公告)日：1995-10-03

申请号：US237569

申请日：1994-05-03

申请人： Kevin B. Garland ,  Gerald R. Pohto ,  Edward M. Halko ,  Zane A. Wade

发明人： Kevin B. Garland ,  Gerald R. Pohto ,  Edward M. Halko ,  Zane A. Wade

IPC分类号： C25B11/03

CPC分类号： C25B11/03 ,  Y10T29/49718 ,  Y10T29/49728 ,  Y10T29/4973 ,  Y10T29/49737 ,  Y10T29/49742

摘要： Electrodes such as mesh electrodes can be in configurations where they are separated from electrode back pans by standoffs. The mesh electrodes are very adherently secured to the standoffs. When the electrodes are in need of repair, removal and refurbishing can be a problem. There is now disclosed a method of electrode repair which in large part retains original structure by first removing the mesh electrode and then at least substantially the top of the standoff. A replacement standoff assembly is placed against the retained portion of the original standoff and secured thereto. Refurbished or new electrode mesh can be adhered to the resulting replacement standoff. This may include welding of mesh electrode strands utilizing weld nuggets which are substantially the size of the strands. The refurbishing technique can maintain original separation distances between the back pan and the electrode. The structure provided can be in an "as new" condition without need for repair at an off site location from where the electrode will be used.

摘要翻译： 诸如网状电极的电极可以是通过间隔与电极背板分离的构造。 网状电极非常牢固地固定在支座上。 当电极需要修理时，拆卸和翻新可能是一个问题。 现在公开了一种电极修复方法，其通过首先除去网状电极，然后至少基本上保持支架的顶部，大部分保持原始结构。 将替换的支架组件放置在原始支架的保持部分上并固定到其上。 翻新或新的电极网可以粘附到所产生的替换支架上。 这可以包括使用基本上是股线的尺寸的焊接块来焊接网状电极股线。 翻新技术可以保持背板和电极之间的原始间隔距离。 所提供的结构可以处于“一个新的”状态，而不需要在使用电极的非现场位置进行修复。