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| Number | Title | Issue Date |
| 7378010 | System and method for producing copper powder by electrowinning in a flow-through electrowinning cell This invention relates to a system and method for producing a metal powder product using conventional electrowinning chemistry (i.e., oxygen evolution at an anode) in a flow-through electrowinning cell. The present invention enables the production of high quality me... | 05/27/2008 |
| 7368049 | Method and apparatus for electrowinning copper using the ferrous/ferric anode reaction and a flow-through anode The present invention relates, generally, to a method and apparatus for electrowinning metals, and more particularly to a method and apparatus for copper electrowinning using the ferrous/ferric anode reaction and a flow-through anode, such as, for example, a dimensi... | 05/06/2008 |
| 7344624 | Reducing power consumption in electro-refining or electro-winning of metal A cathode plate and method for electro-refining or electro-winning of metal. The cathode includes a cathode blade and hanger bar. A quantity of electrically conductive material is wrapped around the hanger bar and along the cathode blade to a position, in use, proxi... | 03/18/2008 |
| 7335289 | High purity electrolytic copper and its production method A method of producing high purity electrolytic copper through halide-bath electrowinning is provided. The method includes the steps of: growing copper in dendritic form to be deposited on a cathode; and recovering growth ends of 3.0 mm or shorter from the dendrites.... | 02/26/2008 |
| 7195702 | Tin alloy electroplating system Disclosed are systems and methods of plating a tin alloy in an efficient, economical, and environmentally friendly manner. An electrochemical cell containing an anolyte compartment and a catholyte compartment separated by a selective membrane is employed. The select... | 03/27/2007 |
| 6846395 | Edge insulating member for electrode plate, method of locking and unlocking the edge insulating member, and edge insulating member installation jig The present invention relates to an edge insulation member for an electrode plate used for electrolytic refinement of metal, and to a fixing method for it. On a tip portion 22A of a main body 22, a fitting groove 23 and a jaw portion 24 f... | 01/25/2005 |
| 6835297 | High current density electrolytic decomposition process for copper The method for electrolytically refining copper makes use of crude copper as an anode and is characterized in that the temperature of the electrolyte in an electrolytic cell is maintained at a level of not less than 55° C.; that the electrolyte is continuously intr... | 12/28/2004 |
| 6569300 | Steel-clad cathode for electrolytic refining of copper An electrolytic cathode consists of a solid copper hanger bar and a stainless-steel mother plate attached to a receiving groove in the underside of the hanger bar. In the preferred embodiment of the invention, the entire length of connection is welded, th... | 05/27/2003 |
| 6153082 | Copper cathode starting sheets Wrought copper cathode starting sheets for use in the electrolytic production of copper made preferably by a continuous casting and rolling process are provided. Refined copper is melted in a shaft furnace and continuously cast preferably using a twin bel... | 11/28/2000 |
| 6045669 | Structure of electric contact of electrolytic cell The present invention provides a structure of an electric contact of an electrolytic cell, wherein an elongated conductive member is provided as a bus bar 10 on a wall of an electrolytic cell for feeding current to anodes 1 and cathodes 2 arranged in the ... | 04/04/2000 |
| 5837123 | Prevention of cathode corrosion during electrowinning A method to prevent corrosion of a stainless steel cathode in a copper electrowinning system uses compounds added to the electrowinning solution which reduce the level of free chlorine. Examples of such compounds are thiourea, alkyl sulphonate surfactants... | 11/17/1998 |
| 5779877 | Recycling of CIS photovoltaic waste A method for extracting and reclaiming metals from scrap CIS photovoltaic cells and associated photovoltaic manufacturing waste by leaching the waste with dilute nitric acid, skimming any plastic material from the top of the leaching solution, separating ... | 07/14/1998 |
| 5720867 | Process for the electrochemical recovery of the metals copper, zinc, lead, nickel or cobalt An electrolytic cell comprising bipolar electrodes is employed for electrochemical deposition of copper, zinc, lead, nickel or cobalt. An interior space is provided between the cathode side and the anode side of a bipolar electrode. The electrolyte can fl... | 02/24/1998 |
| 5690806 | Cell and method for the recovery of metals from dilute solutions An electrochemical cell is provided for removal of metals such as copper, lead, silver, tellurium, platinum, palladium or nickel from dilute solutions of the metal. The cell comprises a porous tubular support (18) which is provided with a cathode comprisi... | 11/25/1997 |
| 5520792 | Process for making copper metal powder, copper oxides and copper foil This invention is directed to a process for making copper metal powder from copper-bearing material, comprising: (A) contacting said copper-beating material with an effective amount of at least one aqueous leaching solution to dissolve copper ions in said... | 05/28/1996 |
| 5487819 | Production of metals from minerals A process for producing one or more metals from a mineral feedstock (12) is defined. The mineral is fed to a leaching apparatus (10) wherein it is contacted with electrolyte (14). The leaching apparatus has zones of decreasing oxidation potential (17, 18,... | 01/30/1996 |
| 5372683 | Method and apparatus for the electrolytic extraction of metals from a solution containing metal ions For the electrolytic extraction of metal from a solution containing metal ions and situated in a first cell, metal is cathodically deposited by means of an anode on an electrically conductive endless band immersed partially into the solution, and is redis... | 12/13/1994 |
| 4944851 | Electrolytic method for regenerating tin or tin-lead alloy stripping compositions An aqueous solution of alkane sulfonic acid and inorganic nitrate used to strip metals from substrate surfaces, such as in stripping tin or tin-lead from copper surfaces, is regenerated by subjecting it to electrolysis to case dissolved stripped metals th... | 07/31/1990 |
| 4911804 | Electrochemical reactor for copper removal from barren solutions A system for treating a barren solution typically containing a heavy metal such as copper, and complexed cyanide, from a precious metal mill, is treated in a first electrochemical cell to remove the heavy metal and free the cyanide whereafter the treated ... | 03/27/1990 |
| 4882027 | Cathode hangers A cathode for electrolytic refining or electro-winning of copper is disclosed. The cathode comprises a steel hanger bar having a copper cladding and a flat stainless steel starter sheet with a plurality of lugs formed along its upper edge secured to the h... | 11/21/1989 |
| 4857159 | Electrodeposition recovery method for metals in polymer chelates The process of the present invention for the recovery of metal ions from a polymeric chelating agent stream or solution comprises the circulation of a loaded polymeric chelating agent stream or solution through an electrolytic recovery cell. The chelating... | 08/15/1989 |
| 4702806 | Method of and apparatus for recovering a metal from a solution, namely an electrolyte-containing metal A cathode compartment is defined by a pair of filter walls between which a cathode or electrolyzing ionic solution of a metal is received. The electrolysis is forced through this compartment and the current density against an anode outside the compartment... | 10/27/1987 |
| 4670124 | Cathode for use in the electrolytic refining of copper and method of making same A cathode for use in the electrolytic refining of copper which comprises a carrying bar and a flat starting plate, which is secured to the carrying bar and made of special steel and provided with electrically insulating edge strips at least at its vertica... | 06/02/1987 |
| 4507182 | Process for preparing metal by electrolysis, especially lead, and by-product obtained by their application The present invention is a process for preparing a lead or copper metal by electrolysis in a cell having a cathode and an anode which are separated by a diaphragm, which comprises the steps of preparing an electrolyte containing a metal chloride to be pre... | 03/26/1985 |
| 4490223 | Electrode for electrometallurgical processes The invention relates to an electrode for use in electrometallurgical processes, particularly for use as an anode in copper electrorefining to deposit copper onto starting blanks to make starting sheets or cathode products. The electrode is characterized ... | 12/25/1984 |
| 4470892 | Planar carbon fiber electrode structure Electrodes are disclosed which comprise a porous conductive material as a primary electrode component in electrical contact with a secondary electrode component which preferably is a metal, such as titanium. The secondary electrode component is normally c... | 09/11/1984 |
| 4459189 | Electrode coated with lead or a lead alloy and method of use An electrode in particular an oxygen-evolving anode for metal electrowinning from an acid electrolyte comprises a body of aluminum or other metal coated with lead or a lead alloy by electroplating preferably from a non-aqueous electrolyte. The substrate c... | 07/10/1984 |
| 4396474 | Modified carbon or graphite fibrous percolating porous electrode, its use in electrochemical reactions This invention concerns a fibrous percolating porous electrode of the type containing a fibrous porous matrix made of carbon or graphite. The fibrous porous matrix, such as a carbon or graphite felt, is modified, for example by impregnation with a surface-acti... | 08/02/1983 |
| 4385970 | Spontaneous deposition of metals using fuel fed catalytic electrode The present invention encompasses the use of a specific fuel fed electrode in depositing metals from solutions thereof and in the absence of an external applied potential. Basically as shown in FIG. 1, the electrode comprises an electrically conductive po... | 05/31/1983 |
| 4293396 | Thin carbon-cloth-based electrocatalytic gas diffusion electrodes, and electrochemical cells comprising the same This disclosure is concerned with thin gas diffusion electrodes comprising an open pore carbon cloth substrate provided with a uniform mixture of catalytic carbon particles and preferably Teflon particles adhered within the cloth poes and to the yarns of ... | 10/06/1981 |
| 4251337 | Novel titanium-containing electrode and electrolytic processes employing same A new electrode comprising a titanium sheet, a copper hanger bar and an explosion-bonded metallurgical junction between said sheet and said bar bonding same together is disclosed as well as a process for the preparation thereof. Also disclosed are new ele... | 02/17/1981 |
| 4226685 | Electrolytic treatment of plating wastes The known method of removing heavy metal and cyanide ions from plating waste solutions wherein the solution is passed through flow-through, high surface area electrodes to precipitate heavy metal ions and to oxidize cyanide is improved through the use of ... | 10/07/1980 |
| 4207153 | Electrorefining cell with bipolar electrode and electrorefining method An electrorefining cell includes a bipolar electrode that is comprised of a sheet of acid resistant metal and a basket of the same or similar material attached directly to one side of the sheet, the basket being lined with an acid-resistant filter cloth. ... | 06/10/1980 |
| 4196059 | Method for electrolysis of non-ferrous metal A technique and arrangement for the continuous electrolytic refining or electric extraction from solution of copper or other non-ferrous metal is described. An elongated electrolysis chamber is divided into a pair of separated compartments by means of a m... | 04/01/1980 |
| 4171249 | Improvements in or relating to circulating bed electrodes An electrochemical cell is disclosed which includes a particulate electrode and a current conductor for feeding current to the particles of the particulate electrode, and means for flowing a fluid medium upwardly through the said particulate electrode, wh... | 10/16/1979 |
| 4141804 | Process for electrowinning metal from metal bearing solutions A process and an apparatus for electrowinning metal from metal bearing solutions is disclosed. A support solution containing a predetermined metal concentration is continuously recirculated through a cell having a porous grid supporting a bed of particula... | 02/27/1979 |
| 4139430 | Process of electrodeposition and product utilizing a reusable integrated cathode unit A reusable integrated cathode unit and an associated electrolytic method are disclosed for the simultaneous production of a multiplicity of metal electrodeposits by plating from a base metal electrolyte. The rigid cathode unit has two integrated component... | 02/13/1979 |
| 4085017 | Recovery of copper and nickel from alloys Copper and nickel are recovered from alloys by electrolysis in a cell employing the alloy as anode. In addition, the electrolytic cell has separate anode and cathode sections, with an intermediate liquid copper-mercury alloy electrode between the anode an... | 04/18/1978 |
| 4073707 | Method of operating a circulating bed cell The invention discloses a method of controlling the size distribution of electroconductive particles constituting a particulate electrode in an electrochemical cell. Particles are extracted from the particulate electrode and are subjected to elutriation, ... | 02/14/1978 |
| 4062744 | Extraction of copper from sulfide ores Copper is extracted from sulfide ores or concentrates by electrolysis in a cell having separate anode and cathode sections, and having an intermediate liquid copper-mercury alloy electrode between the anode and cathode sections.... | 12/13/1977 |
