Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 8187450 | Method and apparatus for electrowinning copper using ferrous/ferric anode reaction 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. In general, the use of a flow-through anode—coupled wi... | 05/29/2012 |
| 7736486 | System and method for producing copper power 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... | 06/15/2010 |
| 7494580 | System and method for producing copper powder by electrowinning using the ferrous/ferric anode reaction The present invention relates, generally, to a method for electrowinning copper powder, and more particularly to a method for electrowinning copper powder from a copper-containing solution using the ferrous/ferric anode reaction. In accordance with various embodimen... | 02/24/2009 |
| 7384533 | Electrolytic processes with reduced cell voltage and gas formation Electrolytic solutions containing organic additive(s) selected from a described class of additives (e.g., 4,6-dihydroxypyrimidine) reduce overall applied electrical potential of electrolytic cells and/or reduce gas formation at the anode(s) or increase copper produc... | 06/10/2008 |
| 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 |
| 7378011 | Method and apparatus for electrowinning copper using the ferrous/ferric anode reaction 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. In general, the use of a flow-through anode—coupled wi... | 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 |
| 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 |
| 6530475 | Portable office The portable office includes a soft-sided case with six walls. The top and second side are openable. The inside of the case includes a terminal compartment, a fixed computer support shelf and a moveable printer shelf. A remote edge of the moveable printer... | 03/11/2003 |
| 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 |
| 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 |
| 5679240 | Anode for the electrolytic winning of metals and process The anode comprises a substantially horizontal carrying bar, which is disposed outside the electrolyte and serves to supply electric current. Two substantially parallel metal surfaces (anode grids) are electrically conductively connected to the carrying b... | 10/21/1997 |
| 5628874 | Reduction of chloride in pulping chemical recovery systems The present invention relates to an environmental-friendly process for reducing the content of chloride in a liquor inventory of a chemical pulp mill. According to the invention, in a recovery system for pulping chemicals containing sulphur and an alkali ... | 05/13/1997 |
| 5622615 | Process for electrowinning of copper matte A sulfur dioxide free process for the production of high purity metallic copper from copper-matte wherein copper-matte is leached under oxidizing conditions in a ferric-containing acid copper sulfate electrolyte leach assembly including one or more leach ... | 04/22/1997 |
| 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 |
| 5454917 | Apparatus and process for recovering metal from an aqueous solution The invention is an apparatus and process for recovering metal from a solution. This apparatus is a structure having an anode formed from a plurality of reducing metal elements and a cathode formed from a high surface area electrically conductive material... | 10/03/1995 |
| 5248398 | Process for direct electrolytic regeneration of chloride-based ammoniacal copper etchant bath A novel bipolar cell is described together with a method for employing the same in the electrowinning of heavy metals (copper, nickel, cobalt and the like) from baths such as etchants, electroless plating baths and the like. In a particular application, t... | 09/28/1993 |
| 5019273 | Method for recovery of heavy metals from highly concentrated wastewater solutions Heavy metals are reclaimed from a concentrated wastewater solution containing heavy metal cations and an acid by adding to the wastewater a bed of scrap aluminum in a total amount between about 160% and about 180% of the stoichiometric requirement for com... | 05/28/1991 |
| 5019224 | Electrolytic process An electrolytic process in which an aqueous electrolyte is electrolysed in an electrolytic cell which comprises at least one anode and at least one cathode, in which oxygen is evolved at the anode, and which is operated at an anode current density of at l... | 05/28/1991 |
| 5002642 | Method for electrowinning a metal using an electrode unit consisting of assembled anode plates and cathode plates and a frame body for forming such an electrode unit A method of electrowinning a metal in which electrolysis and servicing and treatments of the electrodes are carried out using an electrode unit. A plurality of anode plates and cathode plates are allunately and insulatedly assembled and regularly spaced a... | 03/26/1991 |
| 4971666 | Redox reactions in an electrochemical cell including an electrode comprising Magneli phase titanium oxide An electrochemical cell including an electrode comprising Magneli phase titanium oxide is disclosed for use with reduction oxidation reactions. The use of the Magneli phase titanium oxide electrode advantageously inhibits certain redox back reactions.... | 11/20/1990 |
| 4954228 | Drum electrolysis Electrolysis of metal from an electrolyte inside a rotating cathode drum during use of an in the drum existing solid, freely movable insoluble particle material, provides that electrolyted metal does not deposit on the drum walls but on the present partic... | 09/04/1990 |
| 4913779 | Process and installation for electrolysis by percolation across one or several porous volumic electrodes The invention relates to a process and an apparatus for electrolysis by percolation through at least one porous volumic electrode, for carrying out an electrochemical reaction. The process is of the type comprising electrically polarizing each volumic ele... | 04/03/1990 |
| 4696731 | Amorphous metal-based composite oxygen anodes Improved amorphous metal-based composite oxygen anodes comprise a substrate material, a first coating of an amorphous metal alloy applied thereto and a second coating of a mixed metal oxide applied to the first coating and fused therewith. A method for th... | 09/29/1987 |
| 4608136 | Oxidation of carbonaceous material and electrodeposition of a metal at the cathode of an electrolytic cell A metal is electrodeposited in a continuous cyclic electrolytic/carbon oxidation process wherein ferrous ion is oxidized at the anode and a metal is deposited at the cathode of an electrolytic cell. The ferric ions produced at the anode are thereafter red... | 08/26/1986 |
| 4517064 | Electrolytic cell An improved apparatus and process for electrolytically producing a particulate crystalline metal product having limited adherence to the surface of a cathode, comprising a vertically elongated cathode, at least one vertically elongated anode spaced from s... | 05/14/1985 |
| 4500396 | Copper recovery process A method is described for metal recovery from basic ammoniated metal solutions by means of a weakly-acidic cation-exchange material comprising a polymeric felt incorporating radiation-grafted monomers comprising carboxylic acid functional groups.... | 02/19/1985 |
| 4422911 | Method of recovering hydrogen-reduced metals, ions and the like at porous catalytic barriers and apparatus therefor This disclosure relates primarily to the recovery of hydrogen-reduced metals from aqueous solutions of salts thereof, such as, for example, copper from copper sulphate solution, by hydrogen reduction at a catalytic barrier made pervious to the solution, i... | 12/27/1983 |
| 4412893 | Anode-assisted cation reduction A method of cation reduction by anode-assisted electrolysis comprises electrolyzing cations at a cathode of a cell in which the anolyte contains ferrous ion as a reducing agent, with relative motion between the anode and the anolyte such as to promote con... | 11/01/1983 |
| 4367128 | Energy efficient self-regulating process for winning copper from aqueous solutions The present invention is predicated upon the discovery that in the electrowinning of copper from solutions thereof, a hydrogen fed porous catalytic anode can be caused to operate under such conditions of constant current flow whereby a dynamic equilibrium... | 01/04/1983 |
| 4331520 | Process for the recovery of hydrogen-reduced metals, ions and the like at porous hydrophobic catalytic barriers This disclosure concerns primarily the recovery of hydrogen-reduced metals from aqueous solutions of salts thereof, by hydrogen reduction at a porous hydrophobic catalytic barrier, at ordinary temperatures, in an apparatus provided with means to supply hy... | 05/25/1982 |
| 4279711 | Aqueous electrowinning of metals An improved process for aqueous electrowinning of metals, using methanol (or another soluble fuel) added to the electrolyte, a catalytically active platinum mesh or platinum-plated titanium anode and periodic current reversal, in order to maintain a low a... | 07/21/1981 |
| 4201635 | Method and apparatus for carrying out an electrolysis process An electrolysis process in which the source of the voltage difference between the anode and the cathode of the electrolysis cell is an electromotive force. The electromotive force is produced in the electrodes by introducing a magnetic field into the elec... | 05/06/1980 |
| 4189358 | Electrodeposition of ruthenium-iridium alloy Ruthenium-iridium electrodeposits are prepared from aqueous acid solution containing ruthenium, iridium, a fluoborate salt, fluoboric acid, and optionally sulfamic acid. The baths are especially useful for preparing insoluble anodes.... | 02/19/1980 |
| 4134806 | Metal anodes with reduced anodic surface and high current density and their use in electrowinning processes with low cathodic current density Describes an electrochemical process operated at relatively low cathodic current density and high anodic current density, particularly for electrowinning and electrorefining processes using dimensionally stable metal anodes with reduced anodic electrocata... | 01/16/1979 |
| 4124460 | Electrowinning of copper in presence of high concentration of iron A process for electrowinning of copper from leach solutions containing a high concentration of iron in the range of about 5 to 40 gpl, is disclosed. The process consists in applying direct current through the solution and periodically reversing the polari... | 11/07/1978 |
| 4075069 | Processes for preventing the generation of a mist of electrolyte and for recovering generated gases in electrowinning metal recovery, and electrodes for use in said processes The present invention provides a process for preventing the generation of a mist of electrolyte in the electrowinning metal recovery which is carried out by using an aqueous solution of a metal salt as an electrolyte and an insoluble electrode, said proce... | 02/21/1978 |
| 4072586 | Manganese dioxide electrodes Novel electrodes consisting essentially of a valve metal base or other electrically conductive material which is corrosion-resistant to the anodic conditions having on at least a portion of its outer surface an electrocatalytic coating of ଲ-manganes... | 02/07/1978 |
| 4064022 | Method of recovering metals from sludges A sludge containing a sparingly soluble metal compound such as nickel carbonate or the like is supplied to an anode compartment or an intermediate compartment of an electrolytic cell provided with an anode compartment and a cathode compartment or with an ... | 12/20/1977 |
| 4056449 | Electrowinning method In the method of electrowinning metals from acid aqueous solutions of the metals, the improvement comprising maintaining the anode surface at a temperature not greater than 40° C to avoid deposits of manganese cobalt and iron dioxides and to improve anod... | 11/01/1977 |
