| Patents for C22B 43 - Obtaining mercury (631) |
|---|
| 02/27/1996 | US5495062 Mixing liquid ammonia with contaminated soil in closed vessel, allowing soil particles to precipitate while forming upper phase of dispersed soil fines, separating phases, separating ammonia from soil fines containing nuclear waste |
| 02/27/1996 | US5494649 Leaching copper, lead and tin with methanesulfonic acid |
| 01/18/1996 | DE4429869C1 Reprocessing zinc@ rich amalgams with low residual mercury@ |
| 01/03/1996 | EP0615473B1 Method and device for removing one or more contaminations from a bulk material |
| 12/26/1995 | US5478540 Removal of mercury heavy metal values employing sulfur trioxide |
| 12/12/1995 | US5474593 Agent for treating metal ions in an aqueous solution, process for producing the metal ion-treating agent and method for treating metal ions in an aqueous solution |
| 10/26/1995 | DE4431993C1 Removal and recovery of mercury from aq. solns. |
| 09/27/1995 | EP0673670A1 Method of processing and recovering metalliferous deposits resulting from the purification of gases during the thermal treatment of wastes |
| 08/23/1995 | EP0668362A1 Method and apparatus for continous thermal removal of mercury from a carrier material |
| 07/26/1995 | EP0663960A1 Method for removing mercury from contaminated soils and industrial wastes and related apparatus |
| 05/30/1995 | US5419884 Regenerative mercury removal process |
| 05/18/1995 | DE4339794A1 Treatment of waste/residues contg. amalgam |
| 05/10/1995 | EP0596911B1 Method of purifying flue gases containing high concentrations of mercury |
| 04/27/1995 | DE4405398C1 Process and device for continuous thermal removal of mercury from luminescent material |
| 04/12/1995 | EP0647721A2 Agent for treating metal ions in an aqueous solution, process for producing the metal ion-treating agent and method for treating metal ions in an aqueous solution |
| 02/21/1995 | US5391217 Method for eliminating mercury from liquids |
| 11/29/1994 | US5368541 Method of extraction of mercury and gold from mine tailings |
| 11/01/1994 | US5360169 Process and apparatus for the disposal of articles containing metals or metal vapors |
| 10/19/1994 | EP0619764A1 Process for removing heavy metals from soils. |
| 10/11/1994 | US5354357 Removal of mercury from process streams |
| 10/05/1994 | EP0617740A1 Extraction of mercury and mercury compounds from contaminated material and solutions |
| 09/21/1994 | EP0615473A1 Method and device for removing one or more contaminations from a bulk material. |
| 06/30/1994 | DE4333739A1 Recovery of mercury@ from combustion flue gases |
| 06/23/1994 | DE4243313A1 Decontamination of solid to remove mercury by low temp. dry distn. |
| 06/09/1994 | DE4311326A1 Removal of metal contaminants, e.g. mercury, from molten sulphur using activated alumina - in packed column, filter or fluidised bed produces almost pure sulphur for e.g. sulphuric acid mfr. |
| 05/24/1994 | US5314527 Treatment with acid, sodium chloride and sodium hypochlorite |
| 05/11/1994 | EP0595972A1 Process and installation for recycling fluorescent lamps, high-pressure discharge lamps and thermometers |
| 04/28/1994 | WO1994009167A1 Extraction of mercury and mercury compounds from contaminated material and solutions |
| 04/14/1994 | DE4234447A1 Recycling of light bulbs which contain mercury@ - mercury@/zinc@ amalgam from pulverised bulbs adhering to rotating zinc drum under electrolyte spray is removed by conversion to copper@ or aluminium@ amalgam |
| 04/12/1994 | CA1328352C Process for the removal of mercury from precious metal-cyanide liquors |
| 04/07/1994 | DE4233046A1 Disposal of waste with metal and metal vapour material - has receptacle with grid immersed in fluid and lower conveyor to carry out fragments and sludge |
| 04/05/1994 | US5300137 Heating material to first temperature to vaporize moisture, discharging vapor, heating to second temperature to vaporize mercury, condensing |
| 03/31/1994 | WO1994006946A1 Method for removing mercury from contaminated soils and industrial wastes and related apparatus |
| 03/23/1994 | EP0587867A1 Process for recycling solids, powders and sludges contaminated with mercury |
| 01/11/1994 | CA1325993C Method of removing mercury from hydrocarbon oils |
| 01/05/1994 | DE4221207A1 Removal of mercury@ from liquids, e.g. alkali alkoxide solns. - by contacting liq. with fibres which are coated with a silver@ layer |
| 01/05/1994 | DE4221205A1 Reprocessing of carriers made of soluble carrier and coated with silver@ amalgam - comprises dissolving carrier in solvent e.g MEK, and e.g. sepg. soln. for silver@ amalgam, for reuse in processes for removal of mercury@ from liquids |
| 12/27/1993 | CA2097372A1 Process for recovery of metallic mercury from contaminated mercury-containing soil |
| 12/21/1993 | US5271760 Recovery of liquid mercury from process streams |
| 12/15/1993 | EP0573525A1 Method for removing and/or recovering mercury |
| 11/16/1993 | US5262133 Demetallization by reaction with methanol |
| 11/11/1993 | WO1993022466A1 Mercury contaminated mud treatment |
| 10/14/1993 | WO1993020593A1 Process for recycling solids, powders and sludges contaminated with mercury |
| 10/14/1993 | CA2110400A1 Process for recycling solids, powders and sludges contaminated with mercury |
| 10/12/1993 | US5252189 Method of processing used appliance batteries |
| 10/06/1993 | EP0563554A1 Method and installation for elimination of mercury from contaminated pipes and parts of installation, especially of mercury which comes from natural gas |
| 10/05/1993 | CA1322658C Sulfide treatment to inhibit mercury adsorption onto activated carbon in carbon-in-pulp gold recovery circuits |
| 09/14/1993 | US5244492 Process for recovery of metallic mercury from contaminated mercury-containing soil |
| 09/08/1993 | CN1022041C Method for removing mercury from hydrocarbon oils |
| 08/03/1993 | US5232488 Cooling, mixing with sodium thiocyanate solution with activated carbon producing tailings, filtration, collecting condensates, filtrates and tailings, combining to form slime then refining |
| 07/13/1993 | US5226545 Extraction of mercury and mercury compounds from contaminated material and solutions |
| 07/08/1993 | WO1993013229A1 A method of recovering elemental mercury from soils |
| 06/25/1993 | CA2058528A1 Method and apparatus for processing used batteries |
| 06/17/1993 | DE4140969A1 Mercury (cpd.) sepn. from gas - by amalgamation, evapn. with flushing gas and condensation |
| 05/27/1993 | WO1993006952A3 Process for removing heavy metals from soils |
| 05/13/1993 | WO1993008936A1 Method and device for removing one or more contaminations from a bulk material |
| 05/11/1993 | US5209774 Discharged from a chlor-alkali plant, leaching with acid and sodium hypochlorite, thickening |
| 05/11/1993 | US5209773 Dual function mercury trap/particulate filter beds |
| 04/15/1993 | WO1993006952A2 Process for removing heavy metals from soils |
| 04/15/1993 | CA2119021A1 Process for removing heavy metals from soil |
| 04/08/1993 | DE4131974A1 Fluorescent tube disposal - forms block of stacked tubes for end cap cutting and tube rinsing for recovery of fluorescent and mercury@ and glass |
| 04/06/1993 | US5200087 Heating, reducing with metal, vasification, reducing with metallic salt, cooling |
| 03/04/1993 | WO1993004209A1 Process and plant for recovering heavy metals from waste |
| 02/18/1993 | WO1993002799A1 Process and installation for recycling fluorescent lamps, high-pressure discharge lamps and thermometers |
| 02/18/1993 | WO1993002773A1 Method of purifying flue gases containing high concentrations of mercury |
| 02/17/1993 | EP0527457A1 Process for removing mercury from the gases |
| 02/02/1993 | US5183499 Method of recovering elemental mercury from soils |
| 01/28/1993 | DE4124844A1 Verfahren zur reinigung von stark mit quecksilber belasteten rauchgasen Method for cleaning of heavily polluted with mercury flue gases |
| 11/05/1992 | DE4218775A1 Mercury@ sepn. system from contaminated earth - pptes. by contact onto amalgamated smooth or uneven surface as larger droplets |
| 10/01/1992 | WO1992016284A1 Filter for the purification of gases |
| 09/17/1992 | WO1992015528A1 Method for removing and/or recovering mercury |
| 08/20/1992 | WO1992013976A1 Process and device for recycling articles containing metals or metal vapours |
| 08/20/1992 | CA2079586A1 Process and device for recycling articles containing metals or metal vapours |
| 08/13/1992 | DE4102972A1 Verfahren und einrichtung zur abfallverwertung von metalldampfhaltigen lampen Method and device for waste recycling of metal-containing vapor lamps |
| 08/05/1992 | EP0497749A1 A method of successively decreasing the mercury concentration in controlled waste depositions |
| 07/21/1992 | US5131991 Automated product recovery in a HG-196 photochemical isotope separation process |
| 04/29/1992 | EP0482388A1 Mercury recovery process |
| 04/21/1992 | US5106598 Lamp reclamation process |
| 03/31/1992 | US5100803 On-line method of determining utilization factor in hg-196 photochemical separation process |
| 03/25/1992 | EP0476079A1 Method for cleaning and recovering metal mercury from roasting gases containing it |
| 12/10/1991 | US5071475 Chemical reduction by iron powder which does not form amalgam |
| 12/05/1991 | DE4030732A1 Processing fluorescent lamp scrap - for recycling of glass, mercury phosphor, and metals avoiding waste and pollution |
| 10/16/1991 | EP0452178A1 Process for preparing mercury from calomel |
| 10/14/1991 | CA2037829A1 Process for preparing metallic mercury from calomel |
| 09/12/1991 | DE4007270A1 Mercury sepn. from solids e.g. soil - by contact with additional mercury, and density sepn. |
| 09/06/1991 | WO1991014010A1 Method for cleaning and recovering metal mercury from roasting gases containing it |
| 09/06/1991 | CA2054744A1 Method for cleaning and recovering metal mercury from roasting gases containing it |
| 07/23/1991 | US5034054 Solidification of mercury by forming an amalgam with copper, zinc, nickel and sulfur for stabilization |
| 07/16/1991 | US5031883 Cold trap |
| 05/07/1991 | US5013358 Slurrying, chlorination to mercuric chloride, iron reduction of chlorination solution |
| 04/09/1991 | US5006165 Method for mercury refinement |
| 04/03/1991 | EP0420367A1 Process and device for the disposal of lamps containing mercury |
| 01/22/1991 | US4986898 Contacting with treating agent after preheating |
| 01/09/1991 | EP0406389A1 Method and device for separating mercury from an aqueous medium |
| 10/16/1990 | CA1275284C Composition to absorb mercury |
| 10/10/1990 | EP0391382A2 Method of recovering luminophor, or luminophors mixture, and mercury from burnt or unserviceable fluorescent lamps |
| 09/27/1990 | DE3909380A1 Process and apparatus for the disposal and processing of fluorescent lighting tubes and gas-pressure lamps |
| 09/19/1990 | EP0388184A2 On-line method of determining utilization factor in HG-196 photochemical separation process |
| 09/15/1990 | CA2012179A1 On-line method of determining utilization factor in hg-196 photochemical separation process |
| 08/08/1990 | EP0381453A1 Method for removing mercury from hydrocarbon oil by high temperature reactive adsorption |