| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
|---|
| 02/28/1978 | US4076724 Polycyclic macrocyclic compounds |
| 02/28/1978 | US4076618 Treatment of liquids containing complexed heavy metals and complexing agents |
| 01/31/1978 | US4071611 Continuously leaching an ore column |
| 01/24/1978 | US4070437 Process for the recovery of metal chlorides from jarosite sludges resulting from the sulphuric acid processing of ores |
| 01/24/1978 | US4070260 Process of sulfuric acid leaching silicated zinc ores |
| 01/24/1978 | US4070183 Acetonitrile or cyanoethane stabilizers |
| 01/17/1978 | US4069294 Hydrometallurgical recovery of metal values |
| 01/17/1978 | US4069293 Method for dissolving plutonium dioxide |
| 01/17/1978 | US4069119 Copper recovery by leaching and ion exchange |
| 01/17/1978 | US4069041 Multistage sulfatizing |
| 01/17/1978 | US4069040 Method for recovery of platinum and iridium from catalysts |
| 01/10/1978 | US4067821 Stiffening fungi mycelia |
| 01/10/1978 | US4067802 Mono- or dialkyl phosphoric acid, metal chelation collector |
| 01/03/1978 | CA1023690A1 Method for extracting metals through ion exchange and electrolysis |
| 12/27/1977 | US4065542 Two stage leaching of limonitic ore and sea nodules |
| 12/27/1977 | US4065502 Certain β-diketones and the use thereof as metal extractants |
| 12/27/1977 | US4065105 Fluidizing means for reducing viscosity of slurries |
| 12/20/1977 | US4063933 Copper, silver; metal recovery |
| 12/13/1977 | US4062924 Reductive leaching of limonitic ores with hydrogen sulfide |
| 12/06/1977 | US4061564 Phosphate, arsenic and copper containing sulfuric acid |
| 11/15/1977 | US4058585 Solvent extraction of metals from acidic solutions with quaternary ammonium salts of hydrogen ion exchange agents |
| 11/15/1977 | US4058393 Process for the beneficiation of titaniferous ores |
| 11/08/1977 | US4057423 Scrubbing, coversion of sulfur dioxide to trioxide, absorption ion |
| 11/01/1977 | US4056261 Recovery of gold and silver from mine-run dumps or crushed ores using a portable ion-exchange carbon plant |
| 10/25/1977 | US4055591 Phosphonomethyl compounds |
| 10/25/1977 | US4055492 Aminoalkanol |
| 10/18/1977 | US4054638 Process for treating residues from the electrolytic processing of zinc, by recovery of the metals therein |
| 10/11/1977 | US4053552 Leaching, solvent extraction with an organo acid phosphate; hydrometallurgical purification |
| 10/11/1977 | US4053305 Recovery of copper and silver from sulfide concentrates |
| 09/27/1977 | US4051230 Porous membrane impregnated with organic chelating extractant, regeneration of chelating agent and release of metal cation by acid |
| 09/27/1977 | US4051223 Process for the recovery of magnesium |
| 09/27/1977 | US4051221 Process for the separate recovery of vanadium and molybdenum |
| 09/27/1977 | US4051220 Sodium sulfide leach process |
| 09/27/1977 | US4051026 Recovery of silver from silver-containing solutions |
| 09/20/1977 | US4049770 Recovery of copper and zinc as sulfides from copper-iron sulfides |
| 09/20/1977 | US4049514 Electrowinning, leaching, forming copper arsenate |
| 09/13/1977 | US4048282 Solvent extraction of copper with dilution of the organic phase |
| 09/13/1977 | US4048187 5-(2-Hydroxyphenyl)tetrazolyl compounds |
| 09/13/1977 | US4047940 Separation and recovery of copper metal from ammoniacal solutions |
| 09/06/1977 | US4046851 Two stage sulfuric acid leaching of sea nodules |
| 08/23/1977 | US4044116 Method for the complete dissolution of mineral samples |
| 08/23/1977 | US4044094 Two-stage fluid bed reduction of manganese nodules |
| 08/23/1977 | US4043882 Selective solvent extraction process for copper from nickel |
| 08/23/1977 | US4043599 Acid preinjection to decrease instantaneous acid consumption in in-situ mining |
| 08/16/1977 | US4042664 Method for separating metal constituents from ocean floor nodules |
| 08/16/1977 | US4042501 Purification of iron containing acidic solutions |
| 08/09/1977 | US4041126 Continuous process |
| 08/09/1977 | US4041125 Process for separation of the lanthanides |
| 08/02/1977 | US4039612 Process for extracting cobalt, copper or zinc values using a 1-alkyl substituted benzimidazole |
| 08/02/1977 | US4039445 Matrix of algae and method of making same and method of obtaining uranium from sea water by said matrix |
| 08/02/1977 | US4039405 Leaching copper ores and solvent extraction of the copper-bearing solutions |
| 08/02/1977 | US4039404 Cyclic process using A.C. for selective recovery of metals from materials containing same |
| 07/26/1977 | US4038361 Recovery of nitric acid soluble transition metals from sulfur and iron containing ores of the same |
| 07/26/1977 | US4038298 Countercurrent extraction using a bicarbonate |
| 07/26/1977 | US4038080 Fix and bleach-fix bath desilvering |
| 07/26/1977 | US4038066 Method of stripping base metals from fused salts |
| 07/26/1977 | US4037928 Visual image display device |
| 07/19/1977 | US4036639 Production of copper |
| 07/12/1977 | US4035292 Fluid solid contact process and apparatus |
| 07/05/1977 | US4033765 Extractions of copper from solutions by reduction with anthraquinols |
| 07/05/1977 | US4033763 Process for recovery of selected metal values from waste waters |
| 06/28/1977 | US4032332 Process for increasing the rate of copper metal production in a quinolic extraction system |
| 06/28/1977 | US4032331 Process for conserving quinolic compounds in an organic extractant copper recovery system |
| 06/21/1977 | US4030917 Hydrometallurgical processing of metal sulfides |
| 06/14/1977 | US4029733 Manganese |
| 06/14/1977 | US4029704 Oximes |
| 06/14/1977 | US4029498 Process for treating manganese nodules |
| 06/07/1977 | US4028463 Recovery of manganese values |
| 06/07/1977 | US4028462 Method of extraction involving the use of solvents and new combination of reactors used |
| 06/07/1977 | US4027864 Process and apparatus for recovering dissolved copper from solutions containing copper |
| 05/31/1977 | US4026988 Selective extraction of molybdenum from acidic leach liquors |
| 05/31/1977 | US4026831 Chelating polymers based on bis-epoxides and polyamines or polyimines |
| 05/31/1977 | US4026790 Stripping zinc or cadmium complexes with sodium or potassium hydroxide |
| 05/31/1977 | US4026773 Extracting metal values from manganiferous ocean nodules |
| 05/17/1977 | US4024218 Process for hydrometallurgical upgrading |
| 05/17/1977 | US4024054 Bubbles formed by cells of living organisms |
| 05/17/1977 | US4023964 Method of obtaining copper from copper-bearing ores |
| 05/10/1977 | US4022866 Recovery of metals |
| 05/03/1977 | US4021368 Process of treating mycelia of fungi for retention of metals |
| 05/03/1977 | US4021313 Method for purifying actinides which are in low oxidation states |
| 05/03/1977 | US4021199 Automatic cleaning apparatus for electrodes of pH meter |
| 04/26/1977 | US4020143 Use of raw manganese nodules for oxidation leaching of reductively roasted manganese nodules |
| 04/26/1977 | US4020106 Metal extraction process |
| 04/26/1977 | US4020105 Oxime |
| 04/26/1977 | US4020081 Certain benzoxazoles and the use thereof as metal extractants |
| 04/26/1977 | US4019898 Leaching with hydrochloric acid |
| 04/19/1977 | US4018866 Metal carbonate recycle to reduction circuit in the cuprion process |
| 04/19/1977 | US4018865 A-hydroxyoximes, sulfonic acids |
| 04/19/1977 | US4018680 Process for separating iron, zinc and lead from flue dust and/or flue sludge |
| 04/12/1977 | US4017392 Organic peroxides |
| 04/12/1977 | US4017369 Or snantimony, arsenic, mercury, tin |
| 04/12/1977 | US4017309 Thin layer leaching method |
| 04/05/1977 | US4016075 Adding ammonium hydroxide |
| 04/05/1977 | US4016056 Lixiviation with cupric chloride, extraction, oxidation, sulfation, electrolysis |
| 04/05/1977 | US4016055 Containing copper, cobalt, iron and nickel; chlorination |
| 04/05/1977 | US4016054 Hydrometallurgical treatment process for extracting constituent metal values from ferro-nickel |
| 04/05/1977 | US4015980 Use of fluorinated β-diketones in the solvent extraction of zinc |
| 03/22/1977 | US4013412 Method for judging purity of purified zinc sulphate solution used for electrolytic production of zinc |
| 03/15/1977 | US4012484 Chromite recovery from chromite-bearing ore |
| 03/15/1977 | US4012483 Separation of cobalt from nickel in ammoniacal solutions using 8-hydroxyquinolines |