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| Number | Title | Issue Date |
| 7922966 | Systems and methods for removing contaminate material from a flowable material A tank assembly for holding first and second removal materials, comprising a first container and a second container. The first container defines a first chamber. The second container defines a second chamber. The second container is arranged within the first chamber... | 04/12/2011 |
| 7314500 | Systems and methods for removing contaminate material from a flowable material A method of removing contaminate material from a flowable material, comprising the following steps. A first container defining a first chamber is provided. A second container defining a second chamber is arranged within the first chamber. A first removal material is... | 01/01/2008 |
| 7214256 | Solvent extraction process A circuit configuration for a metal solvent extraction plant comprising: A) an extraction section for extracting metal ions from an aqueous leach solution containing the metal ions with an organic solvent solution containing at lea... | 05/08/2007 |
| 7156894 | Method for recovering metal values from concentrates of sulfide minerals A method of recovering precious metal values from refractory sulfide ores is provided. The method includes the steps of separating clays and fines from a crushed refractory sulfide ore, forming a heap from the refractory sulfide ore, producing a concentrate of refra... | 01/02/2007 |
| 7063820 | Photoelectrochemical air disinfection A system for disinfecting a fluid containing microorganisms or chemical contaminants includes a plurality of photocatalyst surfaces secured to a solid surface upon which a fluid to be disinfected contacts. A structure for removing a portion of the photogenerated ele... | 06/20/2006 |
| 7033480 | Process for recovering platinum group metals from material containing base metals The process of the present invention recovers platinum group metal(s), such as platinum and palladium, from PGM-containing materials containing base metals, such as copper and nickel. The process controls sulfur levels by using solvent extraction 306 to remov... | 04/25/2006 |
| 7022281 | Systems and methods for removing contaminate material from a flowable material A removal system for removing contaminate material from a flowable material. The removal system comprises a first and second containers and first and second removal material. The first container defines a first chamber. The second container defines a second chamber ... | 04/04/2006 |
| 7021089 | Laundry appliance A laundry appliance such as a washing machine includes an outer housing and a drum rotatably mounted therein. The drum has an inner wall and an outer wall separate from the inner wall, the inner and outer walls being perforated to allow washing liquid to flow into a... | 04/04/2006 |
| 6991669 | System and method for silver recovery and monitoring A silver recovery and monitoring system including a sensor for transmitting a silver concentration signal in response to the concentration of silver in a fluid, means for determining whether the silver concentration signal indicates the concentration of silver in th... | 01/31/2006 |
| 6972107 | System for direct electrowinning of copper A system and process for recovering copper from a copper-containing ore, concentrate, or other copper-bearing material to produce high quality cathode copper from a leach solution without the use of copper solvent extraction techniques or apparatus. A process for re... | 12/06/2005 |
| 6893605 | Method and system for extracting metal from glass waste A method and systems are provided for extracting heavy metal from glass waste. Glass is initially crushed to a diameter size of about 2 millimeters. The glass is then added to a tank having a solution of water and acid, where the acid removes metal from the surface ... | 05/17/2005 |
| 6893606 | Method and system for extracting metal from glass waste A method and systems are provided for extracting heavy metal from glass waste. Glass is initially crushed to a diameter size between about 10 nanometers and about 2 millimeters. The glass is then added to a tank having a solution of water and acid, where the acid re... | 05/17/2005 |
| 6793816 | Equipment for the leaching of solid matter from sludge The present invention concerns equipment for the leaching of solid matter from a sludge with the aid of a gas containing oxygen, the said equipment comprising a tall reactor (1) equipped with a central pipe (2) and from the reactor bottom (3), a... | 09/21/2004 |
| 6780221 | Waste metal removal systems and methods A removal system for removing a waste metal from a waste solution. The removal system comprises outer and inner containers, inlet, intermediate, and outlet conduits, and first and second reaction media. The inner container defines an upper wall portion and is locate... | 08/24/2004 |
| 6743276 | Method and apparatus for solar heating a mining leach solution A method and apparatus for solar heating a leach solution prior to its distribution over an ore heap. The apparatus includes a heat absorbing mat having a series of individual heat absorbing tubes joined to each other by heat reflecting panels. The heat reflecting p... | 06/01/2004 |
| 6685877 | Apparatus for heating flowing material containing solids The invention relates to an apparatus for the heating of flowing material containing finely divided solids, such as concentrate slurry containing precious metals and/or precious minerals, up to a desired temperature range, for instance the temperature ran... | 02/03/2004 |
| 6616730 | Method and device for activating a physical and/or a chemical reaction in a fluid medium It is possible to activate a physical reaction and/or a chemical reaction in a medium, comprising a solution and solid matter that is freely dispersed in said solution, by placing the mixture in a reactor that has two walls which are located opposite clos... | 09/09/2003 |
| 6613271 | Apparatus and methods for recovering valuable metals Apparatus and method for continuously separating a dense valuable material such as gold from a feed including a grinding mill (2) which directs a crushed feed through hydrocyclones (9) for separation into a light and dense fraction. The dense fraction is ... | 09/02/2003 |
| 6576041 | Method and apparatus for chemical processing A system and method are disclosed after chemical processing involving agitation and/or mixing of components. In one embodiment, the chemical processing involves pressure oxidation and in another embodiment involves pressure leaching. Agitation during chem... | 06/10/2003 |
| 6572677 | Gelatin encapsulated metal powder for silver recovery from processing solutions The present invention relates to the use of fine metal particles for the recovery of silver from a silver-bearing photographic waste solution. In particular, the metal particles are encapsulated in a hydrophilic colloid that allows for the permeability of... | 06/03/2003 |
| 6558449 | Waste metal removal systems and methods A removal system for removing a waste metal from a waste solution. The removal system comprises outer and inner containers and inlet, intermediate, and outlet conduits. The outer container defines an outer chamber, and the inner container defines an inner... | 05/06/2003 |
| 6500232 | Interfacial crud removal system for solvent extraction and method for solvent extraction Process and equipment for the removal of crud from the interface between aqueous and organic layers in SX settlers in which at least one rotatable auger is positioned at or near the interface to remove crud continuously or intermittently from the interfac... | 12/31/2002 |
| 6395063 | Method and system for pressure oxidation of sulfide gold ores involving enhanced oxygen-sulfide contact A system and method for recovering gold using pressure oxidation is disclosed. In one embodiment, a feed slurry is introduced into multiple compartments or stages of a multi-stage autoclave. In another embodiment, an agitator pump is disposed in each comp... | 05/28/2002 |
| 6391165 | Reclaiming metallic material from an article comprising a non-metallic friable substrate A system for reclaiming cadmium and tellurium from cadmium telluride solar cell. The system comprises a crushing apparatus for crushing cells into pieces, a first conveyor for transporting solar cells to the crushing apparatus, a barrel for receiving etch... | 05/21/2002 |
| 6290897 | Pumpless silver recovery system A simple and reliable silver recovery system including a series of silver recovery processing containers through which solution flows by gravity to a waste container. The reservoir container holding a silver-rich solution is positioned above the processin... | 09/18/2001 |
| 6200521 | Waste recovery system A silver waste recovery system including a container having an inlet and an outlet at a lower elevation than the inlet, filler material in a silver cell is in communication with the inlet and a separate non-silver reactive filter is in communication with ... | 03/13/2001 |
| 6149711 | Method and apparatus for solar heating and distributing a mining leach solution A method and apparatus for solar heating a leach solution prior to its distribution over an ore heap. The apparatus includes a distribution mat having a series of individual emitter tubes joined by heat absorbing panels. The heat absorbing panels collect ... | 11/21/2000 |
| 6090341 | Method and system for extracting and refining gold from ores A process and system and for extracting and refining gold from ores using relatively benign and inexpensive chemicals, fewer process steps, and permitting the recycling and re-use of process chemicals. The invention is preferably implemented as a two part... | 07/18/2000 |
| 6053964 | Apparatus and method for applying a leaching solution to ore An apparatus for applying a leaching solution to a mass of ore includes a plurality of first tubes which are connected to a supply of leaching solution. Each of the first tubes is fitted with emitters which are positioned at spaced intervals along the len... | 04/25/2000 |
| 6042775 | Silver reclamation system A silver reclamation system for use with photographic solution. The silver reclamation system includes a body containing a plurality of metallic members positioned within a flow chamber and a metallic mesh contained within the body. The photographic solut... | 03/28/2000 |
| 5914441 | Biocatalyzed anaerobic oxidation of metal sulfides for recovery of metal values A method and apparatus for anaerobic oxidation of metal sulfides in ores and concentrates. Base-metal and precious-metal ores and concentrates often contain metal sulfides, such iron sulfides (e.g., pyrite, pyrhotite, arsenopyrite, etc.), copper sulfides ... | 06/22/1999 |
| 5900041 | Value metal recovery Value metal, for example, silver in a spent silver bearing photographic solution is efficiently recovered in an exchange mass comprising a particulate inert substrate, for example, cellulosic fibers, synthetic fibers or sponge particles, co-mingled and in... | 05/04/1999 |
| 5868995 | Dynamic mining system comprising hydrated multiple recovery sites and related methods A mining system and related methods are disclosed by which gold and/or other heavy metals are recovered at multiple sites along a continuously hydrated ore processing route. The gold-bearing ore and primary or carrier water are dynamically and circuitousl... | 02/09/1999 |
| 5863491 | Photocatalytic reactor for metal recovery from industrial waste streams A photocatalytic reactor to recover precious metals, useful metals, and toxic metals from industrial waste streams using visible or ultraviolet light and semiconductor material as the photocatalyst. Seeds of metal in the same metal group as the metals bei... | 01/26/1999 |
| 5837188 | Silver recovery system A silver recovery system including a container having an inlet and an outlet, a core member positioned within the container, a filler material adjacent to the core member and being of a metal above silver in the electromotive force series, and a non-metal... | 11/17/1998 |
| 5820066 | Methods and apparatus for laying fluid distribution lines Methods and apparatus for laying fluid distribution lines along a surface are disclosed. An overhead support cable is secured between a plurality of anchoring devices spaced along the surface. A rotatable installation reel is then coupled to the overhead ... | 10/13/1998 |
| 5685962 | Apparatus for silver recovery The apparatus allows at least two film processor fixing solution tanks for black and white films with silver-based coating to be connected to a silver recovery unit. To that end, an intermediate storage tank is connected between the fixing solution tanks ... | 11/11/1997 |
| 5672194 | Method and apparatus for extracting precious metals from their ores and the product thereof A method and apparatus for extraction of precious metals from their ores and the product thereof. Oxidized ore comprising a precious metal is exposed to a leaching solution (lixiviant) comprising a relatively high concentration (fugacity) of dissolved hyd... | 09/30/1997 |
| 5641452 | Device for recovering silver from fluids and process using same A silver recovery device for recovering silver from silver containing fluids is provided. The silver recovery device includes an outside container having a fluid inlet and a fluid outlet. A silver recovery cartridge, positioned within the outside containe... | 06/24/1997 |
| 5626816 | Silver recovery system A system for recovering silver as a free metal from silver-bearing liquid. The silver recovery system includes a holding tank for receiving silver bearing liquid having an opening in its top and a removable cover for closing the opening. A pair of silver ... | 05/06/1997 |
