Class 75/634 - Silver(Ag)

Subclass of Class 75 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
Definition: Process in which Silver (Ag) is produced or a metal that
No. of patents: 30
Last issue date: 04/25/2006

Number	Title	Issue Date
7033415	Methods of controlling nanoparticle growth The invention provides new types of plasmon-driven growth mechanism for silver nanostructures involving the fusion of triangular nanoprisms. This mechanism, which is plasmon excitation-driven and highly cooperative, produces bimodal particle size distributions. In t...	04/25/2006
6602319	Process for the recovery of gold and silver from used refractory bricks The present invention relates to a process for the recovery of gold and silver from the used refractory bricks of Dore furnace. This invention particularly relates to a process for the recovery of gold and silver from the used refractory bricks generated ...	08/05/2003
6555010	Solution mining process for removing metals from aqueous solution A process is disclosed for obtaining colloid-forming metal particles from an aqueous mine waste solution containing that metal in ionic form. In accordance with this process, an aqueous mine waste solution containing that metal in ionic form is provided h...	04/29/2003
6231637	Process for producing high-purity silver materials A process for producing a high-purity silver material comprising placing a silver feed in a crucible disposed in a furnace comprising an inner cylinder which encloses the crucible and an outer cylinder which encloses the inner cylinder; heating the silver...	05/15/2001
5403380	Method for producing easily volatile metals, such as zinc, lead, mercury and cadmium, of sulfidic raw materials The invention relates to a method for producing zinc, cadmium, lead and other easily volatile metals from sulfidic raw materials in a pyrometallurgical process. In the method, zinc sulfide concentrate is fed into molten copper in atmospheric conditions, a...	04/04/1995
5279644	Fire refining precious metals asay method A new environmentally safe fire refining precious metal assay method is provided wherein bismuth oxide is used with a special flux composition as the precious metal collector and the cupelling procedure is performed in a controlled temperature range....	01/18/1994
5232486	One step process for the treatment of Parkes desilvering crust to recover zinc and produce a suitable feed for cupellation A process of treating argentiferous alloy variously called "zinc crust" or "silver crust", obtained in the separation of silver from lead, removes sufficient zinc in one apparatus and process step to ensure the product is suitable as feed to cupellation. ...	08/03/1993
5221325	Process for recovering silver oxide and metals from spent silver oxide button cells A process for recovering silver oxide and metals from a spent silver oxide button cell. The process relates to a physical process which consists of a heating and a cooling process to separate the shell and the content (silver, silver oxide) of the spent s...	06/22/1993
5085836	Process for desilvering silver halide processing fluids A method to reduce dissolved silver present in spent, waste, photographic processing fluids containing thiosulfate, is described. This process involves adjusting the pH to a low level prior to the addition of finely ground steel to the solution. With the ...	02/04/1992
5085692	Recovery of silver values from chlorides including silver chloride This invention relates to the recovery of silver values from silver chloride or mixed chlorides including silver chloride. A pyrometallurgical process is provided in which chloride residues are smelted with an agent such as sodium silicate that provides a...	02/04/1992
5074910	Process for recovering precious metals from sulfide ores The present invention is a process to recover precious metals from sulfide ores. It involves chlorinating a mixture of an ore concentrate and salt to form a liquid melt. The salt preferably contains potassium chloride. This chlorination is carried out at ...	12/24/1991
5067987	Method of manufacturing a silver alloy which is blackened throughout its bulk The present invention relates to manufacturing a silver alloy which is blackened throughout its bulk and used, for example, in jewelry. The method of manufacturing this material comprises putting the silver alloy into contact with sulfur in the form of su...	11/26/1991
4955482	Screen cleaning in cil & cip systems In carbon-in-pulp (CIP) and carbon-in-leach (CIL) processes, especially those utilizing pure oxygen instead of normal air to increase the overall efficiency of the cyanide leaching-adsorption process in the recovery of gold and/or silver from ores, the sc...	09/11/1990
4734129	Recovery of metals from their alloys with lead using consummable lance and apparatus A metal, especially silver, may be recovered from its alloy with lead by a method comprising injecting, into the molten alloy, an oxygen-containing gas to oxidize the lead to form lead oxide slag and removing the slag from the molten metal. The oxygen-con...	03/29/1988
4695317	Method of treating silicate ore containing gold and silver A silicate ore containing gold and silver is melted with the slag from a copper converter and a reducing agent. A source of CaO may also be added to the slag so that the treated slag may contain at least 3.0% by weight of CaO. Copper is recovered from the...	09/22/1987
4657586	Submerged combustion in molten materials A process for heating a molten material by injecting oxygen and a fuel into a molten bath of the material at a bath temperature above the spontaneous combustion temperature of the fuel, at least a portion of the fuel forming a shroud around the oxygen, an...	04/14/1987
4613365	Method for recovering precious metals The invention relates to a method for pyrometallurgically recovering the precious metal content, such as gold, silver and platinum metals, of halogen-bearing materials rich in silver. The material is caused to rapidly disperse in or be finely distributed ...	09/23/1986
4608083	Method for recovering the valuable metal content of contaminated copper raw material The invention relates to a method for recovering the valuable metal content of a mix of contaminated copper raw materials, of which materials at least one is sulphide bearing, and which contain one or more impurities forming the group arsenic, antimony, b...	08/26/1986
4581064	Treatment of anode slimes in a top blown rotary converter A process for treating anode slimes originating from copper, lead or nickel electrorefining to recover the precious metals contained therein is disclosed. The process comprises the steps of charging the slimes into a tiltable and rotatable top blown rotar...	04/08/1986
4564391	Method for the recovery of silver from silver zeolite High purity silver is recovered from silver exchanged zeolite used to capture radioactive iodine from nuclear reactor and nuclear fuel reprocessing environments. The silver exchanged zeolite is heated with slag formers to melt and fluidize the zeolite and...	01/14/1986
4529444	Method for separating solutions The invention relates to a method for continuously separating a hypoeutectic solution into two parts, of which parts, one comprises practically pure solvent and the other a solution which has a higher content of the dissolved substance than the original s...	07/16/1985
4514221	Method of smelting zinc by injection smelting A method of recovering metallic zinc is disclosed, wherein zinc calcine is introduced to a smelter together with oxygen-enriched air and pulverized coke or coal as reducing agents. The smelter contains two layers, i.e. an upper layer of slag containing th...	04/30/1985
4451289	Process for extracting non-ferrous metals from iron-bearing scraps Non-ferrous metals are extracted from iron-bearing scraps by adding the scraps and a slagging agent for iron to a molten copper bath, injecting an oxygen containing gas in the bath and keeping the bath temperature below 1400°. The scraps thus undergo an ...	05/29/1984
4416692	Process for extracting gold, silver, platinum, lead, or manganese metals from ore A process for extracting metals having lead affinity from mineral ores. The process is in steps including, pulverizing the ore material, drying the ore, melting elemental lead in a melting chamber and maintaining the molten lead within a preselected tempe...	11/22/1983
4397686	Method for refining precious metals A method for economically removing base metal impurities, other oxidizable impurities, and volatile impurities from precious-metal-bearing metallic materials, consisting of silver and gold, to obtain, with high recovery, a resultant precious metal of high...	08/09/1983
4350524	Process for removal of base metal impurities from molten silver with sulfur hexafluoride A method of pyrometallurgical refining of crude silver to remove base metal impurities, particularly bismuth, by treatment with sulfer hexafluoride gas. The crude silver is melted and maintained at about 1000° C. while it is treated concurrently with sul...	09/21/1982
4164418	Method of recovering valuable metals from zinc bearing materials and blast furnace relevant thereto The blast furnace in the present invention comprises a V-shaped or an inclined hearth, tuyeres disposed along said hearth, a tap hole for discharging matte and/or slag, said tap hole being disposed at the lowest part of the hearth, and dampers having V-sh...	08/14/1979
4162915	Process for treating lead-copper-sulphur charges Lead-copper-sulphur charges (e.g., ores and concentrates) containing at least one of the elements Fe, Ag, Bi, Zn and Sn are treated pyrometallurgically to recover their metal values by a process comprising the steps of (a) smelting the charge to produce a...	07/31/1979
4135923	Extraction of metals This invention relates to the extraction of metals. More particularly, the invention is concerned with the extraction of one or more precious metals from material containing such metals. By "precious metals", both here and throughout the remainder of this...	01/23/1979

PatentStorm

Quotables

PatentStorm News

Class 75/634 - Silver(Ag)