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| Number | Title | Issue Date |
| 7052528 | Method for removal of Mn from cobalt sulfate solutions The present invention provides a method for the removal of substantially all the amount of Mn contained in cobalt containing solution thereby to obtain purified cobalt solution with Mn content of 10 ppm or less and specifically a method for removing Mn from cobalt s... | 05/30/2006 |
| 6589695 | Positive active material for rechargeable lithium battery and method of preparing same Disclosed is a method of preparing a positive active material for a rechargeable lithium battery. In this method, a lithium salt is reflux-reacted with a metal salt in a basic solution. The positive active material has a spherical or sperical-like form, d... | 07/08/2003 |
| 5597664 | Lithium manganese oxide compound and method of preparation A method for manufacturing Li2 Mn2 O4 which comprises the steps of providing LiMn2 O4 ; providing a lithium salt; forming a solution or suspension of the LiMn2 O4 and lithium salt in ... | 01/28/1997 |
| 5411643 | Integrated process of using chloric acid to separate zinc oxide and manganese oxide A process for producing manganese dioxide and zinc metal comprising the steps of: (1) reacting a mixture of zinc oxide and manganese oxide with an aqueous chloric acid solution wherein the chloric acid is in molar excess of the manganese oxide in a reacti... | 05/02/1995 |
| 5401477 | Process for producing solid manganese dioxide A process for producing manganese dioxide comprising the steps of: (1) reacting manganese oxide with a molar excess of an aqueous chloric acid solution in a reaction zone to form a reaction mixture in said zone comprising chlorine gas, a solid phase containing... | 03/28/1995 |
| 5264191 | Quaternary ammonium trihalide and method for dissolution of metal with liquid containing the compound A quaternary ammonium trihalide, a novel compound, represented by the formula: [A--R']+ .multidot.X3- (wherein A stands for a trialkyl-amino radical or a pyridyl radical, R' for an alkyl radical of 6 to 22 carbon atoms, and X f... | 11/23/1993 |
| 5015308 | Corrosion-resistant and heat-resistant amorphous aluminum-based alloy thin film and process for producing the same The present invention provides a corrosion-resistant and heat-resistant aluminum-based alloy thin film consisting of a composite having a composition represented by the general formula, Ala Nib Xc Nd, wherein: X... | 05/14/1991 |
| 4943418 | Method of preparing high-purity manganese compounds In a method of preparing high-purity manganese compounds, wherein the method comprises adding a member selected from ferromanganese and metallic manganeses to an aqueous electrolyte-containing solution, dissolving said member while stirring and maintainin... | 07/24/1990 |
| 4919716 | Method for dissolution of metal A metal is dissolved by being brought into contact with at least one halogenated hydrocarbon in the presence of a cationic surfactant.... | 04/24/1990 |
| 4872909 | Process for acid leaching of manganese oxide ores aided by hydrogen peroxide A method of processing manganese ore by adding the ore to an aqueous solution of acid and H2 O2 to form a leach pulp. The leach pulp is agitated for a predetermined time period at predetermined temperatures. The leach pulp is then se... | 10/10/1989 |
| 4726937 | Recovery of nickel chloride and sulfur from waste products Waste containing sulfur and nickel sulfide is heated to volatilize sulfur and reacted with hydrogen chloride to form nickel chloride.... | 02/23/1988 |
| 4718995 | Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material A process is disclosed for recovering scandium from a tungsten bearing material containing tungsten, iron manganese and scandium. The process involves digesting the material in an aqueous solution selected from the group consisting of a saturated solution... | 01/12/1988 |
| 4626280 | Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material A process is disclosed for recovering tungsten, iron, and manganese from tungsten bearing material. The process involves digesting the material in a sulfur dioxide solution at a sufficient temperature for a sufficient time to form a digestion solution con... | 12/02/1986 |
| 4599223 | Separation of tungsten from rhenium A process is disclosed for separating tungsten from a solution containing tungstate and perrhenate ions. The process involves reacting a sufficient amount of hydrochloric acid with the solution at a sufficient temperature to form a solid containing essent... | 07/08/1986 |
| 4441993 | Flotation process A process for recovering metallic values by putting the values into solution and separating undesired mineral matter from the solution using countercurrent flotation is provided. The process involves leaching metallic values from host rock, conditioning t... | 04/10/1984 |
| 4229213 | Hydrometallurgical recovery of nickel values The recovery of metal values such as nickel from a metal bearing source such as lateritic ores in which the metal bearing source is subjected to a reductive roast at an elevated temperature in the range of from about 700° to about 1300° F. in contact wi... | 10/21/1980 |
| 4173617 | Preparation of manganous chloride solution A method for the preparation of manganous chloride solutions using copper as a redox intermediate in the reaction between manganese and chlorine. Treatment of manganese-containing materials with a copper solution results in oxidation and dissolution of th... | 11/06/1979 |
| 4092152 | Volatilization of impurities from smelter reverts A process for substantially reducing the presence of impurities from a sulfur-containing feed material such as dust and hydrometallurgical wastes that result from smelting and refining operations. Pelletized feed materials are heated to 800° to 1150° C ... | 05/30/1978 |
| 4008306 | Method of recovering manganese values from a mixture obtained by catalytically oxidizing a paraffin with gaseous oxygen When paraffins having a chain of 10 - 40 carbon atoms are reacted with gaseous oxygen in the presence of a manganese bearing catalyst, manganese is present in the oxidation mixture partly as a solute in the liquid mixture, and partly as a sludge. When the... | 02/15/1977 |
| 4002717 | Refining of manganese oxide ores This invention provides a method for treating manganese oxide ores in an aqueous medium, with hydrogen halide or sulfuric acid, and a hydrogen sulfide or a metal sulfide, e.g. an ore. A leach liquor containing the desirable metal halides is then separated... | 01/11/1977 |
| 3992507 | Halidation of manganiferous ore to obtain metal values and recovery and recycle of halide values This invention provides a halidation process for obtaining a high purity manganese oxide from a manganiferous ore, while reclaiming a substantial portion of the hydrogen halide reagent. The process comprises halidating the ore with a hydrogen halide and l... | 11/16/1976 |
| 3990891 | Halidation of nonferrous metal values in manganese oxide ores This invention provides a process for obtaining the nonferrous metal values from a manganese oxide ore, by reacting the ore with an aluminum halide or a ferric halide at a temperature of at least about 50° C and preferably, at least about 130° C. The ma... | 11/09/1976 |
