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| Number | Title | Issue Date |
| 7425252 | System and method An analysis system for and method of enabling determination of the velocities of migrating objects, the system comprising an equiphase space-time map generator for generating an equiphase space-time map of equiphase points from each of a plurality of data sets repre... | 09/16/2008 |
| 7425257 | Method for the formation of a good contact surface on a cathode support bar and support bar The disclosure relates to a method of obtaining a good current contact on the support bar of a cathode used in electrolysis. In this method a highly electroconductive layer is formed on the contact piece on the end of the support bar of the cathode, especially at th... | 09/16/2008 |
| 7425251 | System and method A system and method of characterizing, in particular sequencing, polymeric samples, the system comprising: a space-time map generator for generating a space-time map of points representative of the signal peaks of signals detected at a plurality of spaced positions ... | 09/16/2008 |
| 7087148 | Binding acceleration techniques for the detection of analytes The invention relates to compositions and methods useful in the acceleration of binding of target analytes to capture ligands on surfaces. Detection proceeds through the use of an electron transfer moiety (ETM) that is associated with the target analyte, either dire... | 08/08/2006 |
| 6569310 | Electrochemical process for preparation of zinc powder Disclosed is an electrochemical process for preparing zinc powder which involves: a) providing to an electrochemical cell a basic solution of zinc oxide or any other zinc compound that reacts with an aqueous base to produce zinc oxide, the basic solution ... | 05/27/2003 |
| 6569311 | Continuous electrochemical process for preparation of zinc powder The present invention relates to a continuous electrochemical process for preparing zinc powder. The process involves providing to an electrochemical cell a suspension in a 1.25 Molar to 10.0 Molar aqueous alkaline solution of zinc oxide or any other zinc... | 05/27/2003 |
| 5958210 | Efficient electrowinning of zinc from alkaline electrolytes Zinc metal is deposited from an alkali electrolyte solution onto conductive seed particles in an electrowinning process which yields unusually high current efficiency and low energy consumption.... | 09/28/1999 |
| 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 |
| 5635051 | Intense yet energy-efficient process for electrowinning of zinc in mobile particle beds Zinc metal is deposited on mobile seed particles in an electrowinning process. Exceptionally favorable results in terms of production rate, current efficiency and energy consumption are achieved by using a unique combination of design parameters and opera... | 06/03/1997 |
| 5498322 | Aluminum alloy cathode plate for electrowinning of zinc Cathode plate aluminum sheet product for use in electrowinning of zinc in sulfuric acid containing electrolyte bath comprises an alloy (a) consisting essentially of about 0.2 to 0.5% magnesium, 0.15% maximum silicon, 0.1% maximum iron, 0.05% maximum coppe... | 03/12/1996 |
| 5254225 | Recovery of metallic compounds from geothermal brine A geothermal brine containing recoverable metals is contacted with at least two electrodes, across which an electrical potential is applied to cause the metals to deposit upon said electrodes. The invention is particularly useful for the recovery of iron,... | 10/19/1993 |
| 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 |
| 5019172 | Chemical treatment of aluminum cathodes in zinc electrowinning A chemical treatment of an aluminum cathode used in zinc electrowinning consists of contacting the affected areas of the aluminum cathode or the entire surface of the cathode with a dilute hydrochloric acid aqueous solution.... | 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 |
| 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 |
| 4789444 | Process for electrolytically producing metals of Ni, Co, Zn, Cu, Mn, and Cr from a solution thereof Process for electrolytically producing metals of Ni, Co, Zn, Cu, Mn, and Cr, comprising, electrolyzing an aqueous solution containing ions of a metal as main component selected from Ni, Co, Zn, Cu, Mn, and Cr in a cathode compartment to deposit the metal ... | 12/06/1988 |
| 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 |
| 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 |
| 4693790 | Method for monitoring the quality of ZnSO4 electrolyte containing Sb (V) Certain continuous methods for monitoring the quality of ZnSO4 electrolyte lose sensitivity when the electrolyte contains Sb (V). The sensitivity can be increased by electrochemically reducing Sb (V). A sample of electrolyte which contains impu... | 09/15/1987 |
| 4604173 | Low oxygen overvoltage lead anodes Anodes made of lead or lead alloys, used for the evolution of oxygen from sulphuric acid solutions, particularly in metal electrowinning processes, are made more catalytic by treating them in an oxidizing bath of hydrated molten salts, in particular compr... | 08/05/1986 |
| 4584082 | Method and apparatus for acid mist reduction Bubbles produced at an electrode in an electrolytic process are coalesced by providing a surface-limiting, electrically inert masking device of which at least a bottom portion is submerged in the electrolyte. The masking device reduces the free surface of... | 04/22/1986 |
| 4517065 | Alloyed-lead corrosion-resisting anode A corrosion-resisting anode made of a planar sheet of alloyed lead, to be used in industrial cells wherein acidic solutions are circulated, for the electrowinning of non-ferrous metals, such as zinc and cadmium, is characterized in that it is composed by ... | 05/14/1985 |
| 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 |
| 4437965 | Reinforced lead anode for the electrolytic production of zinc from sulphate solution and process for the preparation thereof The anodes for the electrolytic production of zinc from acid aqueous solutions of sulphate comprise a skin portion formed by conventional anode metal, lead containing from 0.25 to 1.0% silver, and a stiffening reinforcing member of titanium or zirconium. ... | 03/20/1984 |
| 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 |
| 4412894 | Process for electrowinning of massive zinc with hydrogen anodes This disclosure is concerned with electrowinning massive zinc with hydrogen anodes and with critical concentration ranges of Zn++ in the electrolyte and of free sulphuric acid, adjusted for optimum energy considerations.... | 11/01/1983 |
| 4364807 | Method of electrolytically recovering zinc A lead alloy anode for a cell for the electrowinning or electrolytic recovery of zinc consists of 0.05 to 0.25% by weight strontium and/or 0.05 to 0.1% by calcium in combination with 0.1 to 0.5 silver, balance lead. The cell is used in a method for the re... | 12/21/1982 |
| 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 |
| 4272339 | Process for electrowinning of metals An electrowinning process for the recovery of various metals including copper, zinc and nickel from an aqueous electrolyte in an electrolytic cell containing anodes and cathodes is disclosed wherein the anodes are formed from a lead alloy containing from ... | 06/09/1981 |
| 4272341 | Process for recovery of metal values from lead-zinc ores, even those having a high carbonate content A chemical, electro-chemical process for recovering meta values from a zinc- or lead-containing material comprises: in a solubilization stage, oxidizing the zinc- or lead-containing material by treating said material with a ferric chloride leach solution; when... | 06/09/1981 |
| 4248682 | Carbon-cloth-based electrocatalytic gas diffusion electrodes, assembly and electrochemical cells comprising the same This disclosure is concerned with improved thin gas diffusion electrodes comprising open pore carbon cloth substrates provided with a uniform mixture of catalytic carbon particles and preferably Teflon particles adhered within the cloth pores and to the y... | 02/03/1981 |
| 4243499 | Process for electrolytic recovery of zinc from zinc sulfate solutions A process for electrolytic recovery of zinc from zinc sulfate solutions according to the electrowinning principle, using an aluminum cathode and a zinc sulfate solution which is devoid of any organic substance and to which at least one of cobalt and nicke... | 01/06/1981 |
| 4234401 | Method for recovery and use of zinc from a leach solution This invention relates to the art of electrowinning and, more particularly, to a process for recovering zinc which is leached from an alloy coating of nickel and zinc which has previously been deposited on cathodes of an electrolytic cell used in the elec... | 11/18/1980 |
| 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 |
| 4183794 | Zinc extraction method A method of extracting primary zinc metal from ore concentrates is described. The method includes providing first and second electrolytic cells, the first cell receiving an acid zinc sulfate solution derived from an ore concentrate, and having an anode wh... | 01/15/1980 |
| 4169776 | Method for recovery of metallic zinc from chlorine contaminated skimmings A method and apparatus for recovery of elemental zinc from zinc scrap, typically skimmings, is disclosed. Zinc skimmings include chlorine as a zinc chloride contaminate. Chlorine liberation in zinc electrolytic refining techniques in an acid bath has fail... | 10/02/1979 |
| 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 |
| 4111765 | Silicon carbide-valve metal borides-carbon electrodes Novel sintered electrodes consisting essentially of 40 to 90% by weight of at least one valve metal boride, 5 to 40% by weight of silicon carbide and 5 to 40% by weight of carbon useful for electrolysis reactions, particularly electrolysis of halide ions ... | 09/05/1978 |
| 4104132 | Method for eliminating solution-level attack on cathodes during electrolysis A method for electrolytic deposition of metals, particularly zinc, in which the tendency for the cathode to be attacked in the immediate vicinity of the solution level is eliminated or greatly reduced by positioning a barrier structure in the cell assembl... | 08/01/1978 |
