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Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
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| Number | Title | Issue Date |
| 7799295 | Ore leach method with aqueous sulfuric acid containing ferric ions There is provided a method for leach extraction of copper/iron/sulphur ores and concentrates including leaching the mineral with an aqueous stream containing ferric ions and sulphuric acid in the presence of oxygen, the aqueous stream including a solution formed by ... | 09/21/2010 |
| 7294319 | Method for precipitating iron from a zinc sulphate solution as hematite This invention relates to a method for the removal of iron as hematite from a zinc sulphate solution in atmospheric conditions during the electrolytic preparation of zinc. According to the method, the pH of the iron-containing solution is adjusted to a value of at l... | 11/13/2007 |
| 7175819 | Regeneration of cupric etchants and recovery of copper sulfate Spent, acidic solutions comprising cupric chloride and hyrdrochloric acid from the copper etching process are regenerated by a process in which the acid is subjected to distillation with sulfuric acid. In one embodiment, the process comprises (a) providing a spent e... | 02/13/2007 |
| 7004326 | Arsenide depression in flotation of multi-sulfide minerals A mineral separation process includes wet-grinding the ore to liberation of minerals, oxidizing the slurry using air, hydrogen peroxide or other oxidants and floating the valuable minerals at a pH between about 9.0 and 10.0 with a xanthate as collector, and a combin... | 02/28/2006 |
| 6921426 | Process of recovering copper from ore A copper concentrate obtained by flotation of a high grade copper ore containing chalcopyrite as a main mineral constituent is leached at a temperature of 100° C. or higher, and under a pressure greater than atmospheric pressure yielding a copper leachate containin... | 07/26/2005 |
| 6846346 | Sulfatization process for metal extraction from sulfide ores The invention provides a hydrometallurgical process for treating metal-containing sulfide ores and concentrates, comprising reacting said metal-containing sulfide with concentrated sulfuric acid at a temperature of between about 300° C. and 400° C. in the presence... | 01/25/2005 |
| 6843970 | Process for recovering metal values by dissolving them in a sulfuric acid solution containing a carbon source and a reducing agent A process for recovering metal values from a metal containing material including the metal values comprising digesting the metal containing material in a sulfuric acid solution comprising sulfuric acid, a reducing agent, and a carbon source, heating the digestion mi... | 01/18/2005 |
| 6569391 | Heap leaching copper ore using sodium nitrate The heap leaching of copper bearing ores is improved by using sodium nitrate as an oxidizing chemical reactive in a sulphuric acid leaching solution. In particular, the ore is crushed to | 05/27/2003 |
| 6455019 | Process for the extraction of copper from a sulphide copper ore or concentrate A process for the extraction of copper from a sulphide ore or concentrate comprises the steps of subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halide and sulphate ions to obtain a resul... | 09/24/2002 |
| 6455018 | Recovery of precious metal and other values from spent compositions/materials Precious metal values, e.g., platinum, palladium and rhodium, and, optionally, other valuable elements, e.g., one or more rare earths and cerium in particular, are recovered from a wide variety of compositions of matter and articles of manufacture, for ex... | 09/24/2002 |
| 6409799 | Copper leach process aids Methods for enhancing the leaching of copper from copper bearing ores with an aqueous sulfuric acid leach solution are disclosed wherein an antifoam formulation stable at a solution pH of about 1 to 2 is added. A preferred antifoam formulation comprises a... | 06/25/2002 |
| 6280501 | Base metal recovery A process for recovering a base metal from a material, the base metal being selected from cobalt, copper, nickel and zinc, the process comprising the steps of reacting the host material with a ferric ion species in a leach solution, at conditions sufficie... | 08/28/2001 |
| 6277341 | Process for the rapid leaching of chalcopyrite in the absence of catalysts A process is provided for the leaching of copper from chalcopyrite using ferric sulfate in which acceptable rates of leaching are achieved by controlling the surface potential of the chalcopyrite to an empirically determined "window" within the broad rang... | 08/21/2001 |
| 6228334 | Method of recovering gold from the fine carbon residue from a coarse carbon gold recovery process A method for recovering gold from gold-loaded fine carbon residue from a coarse carbon gold recovery process is disclosed. The gold-loaded fine carbon residue is mixed with activated coarse carbon and an aqueous solution of a transfer reagent to form a sl... | 05/08/2001 |
| 6168766 | Process for leaching copper from copper sulfide using bacteria Disclosed is a process for leaching copper from copper sulfide using bacteria, which ensures that the rate of leaching of copper increases to reduce the leaching time period and that the rate of leaching of primary copper sulfide contained in ores is incr... | 01/02/2001 |
| 6159435 | Leaching of mineral ores A process for oxidation of ferrous ions in solution, and more particularly a process for improved base metal and/or uranium leaching from ores, concentrates or tailings using ferric ion as an oxidizing agent. A reaction vessel (10) holds a ferrous ion-con... | 12/12/2000 |
| 5895633 | Solvent extraction process for recovering copper from copper-containing solutions The present invention is directed to a process for recovering copper from a copper-containing material by pressure oxidation followed by solvent extraction and electrowinning. The copper-containing solution formed by pressure oxidation is diluted before s... | 04/20/1999 |
| 5874055 | Chloride assisted hydrometallurgical extraction of metal A process for the extraction of a metal from an ore or concentrate comprises subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halogen ions and a source of bisulphate or sulphate ions, such... | 02/23/1999 |
| 5869012 | Chloride assisted hydrometallurgical extraction of metal A process for the extraction of zinc from a sulphide ore or concentrate containing copper and zinc includes subjecting the concentrate to pressure oxidation in the presence of oxygen and an acidic halide solution to obtain a resulting pressure oxidation s... | 02/09/1999 |
| 5827348 | Leaching of precious metal ore with fluoroaliphatic surfactant A method for improving the recovery of gold and silver from precious metal ore is disclosed. The method comprises contacting precious metal ore with an aqueous solution containing certain fluoroaliphatic surfactants.... | 10/27/1998 |
| 5814292 | Comprehensive energy producing methods for aqueous phase oxidation An aqueous phase oxidization process for the oxidization of any nonoxidized feed material using a mixture of a feed material, an oxidizing acid, such as nitric acid; oxygen gas, water and preferably a stabilizing acid, such as sulfuric acid. The mixture i... | 09/29/1998 |
| 5730776 | Hydrometallurgical process for the extraction of copper from sulphidic concentrates There is provided a novel hydrometallurgical process for the extraction of copper from sulphidic concentrates involving an oxidizing pressure leach using dilute sulphuric acid and a carbonaceous additive. The leaching step is carried out preferably at tem... | 03/24/1998 |
| 5709731 | Slurry pipeline leaching method A method for concurrently transporting and leaching metal values from an ore or concentrate containing said metal values from an originating site such as an elevated site to a delivery site comprising the steps of crushing and/or grinding the ore or conce... | 01/20/1998 |
| 5698170 | Hydrometallurgical process for copper-containing materials The present invention is directed to a process for recovering copper from a copper-containing material by pressure oxidation followed by solvent extraction and electrowinning. The copper-containing solution formed by pressure oxidation is diluted before s... | 12/16/1997 |
| 5645708 | Chloride assisted hydrometallurgical copper extraction A process for the extraction of copper from a sulphide copper ore or concentrate comprises subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic chloride solution to obtain a resulting pressure oxidation filtrate ... | 07/08/1997 |
| 5536480 | Method for treating mineral material having organic carbon to facilitate recovery of gold and silver Provided is a process for treating refractory precious metal-containing ores, particularly gold-bearing ores, which are refractory due to the presence of organic carbon, to reduce the ability of organic carbon to interfere with recovery of the precious me... | 07/16/1996 |
| 5484579 | Hydrometallurical recovery of copper and zinc from complex sulfide ores A continuous hydrometallurgical process for conversion of ore derived copper and zinc sulfides into recoverable water soluble sulfates is provided. The process comprises: i) contacting the ore derived copper and zinc sulfides with sulfuric acid and with n... | 01/16/1996 |
| 5431788 | Chloride assisted hydrometallurgical copper extraction A process for the extraction of copper from a sulphide copper ore or concentrate comprises subjecting the ore or concentrate to a first leaching at an elevated temperature and pressure in the presence of oxygen and a lixiviant which comprises an acidic so... | 07/11/1995 |
| 5397380 | Method for processing complex metal sulphide materials A process for the treatment of complex metal sulphide materials and for the recovery of metal values from such materials. The process involves first subjecting the material to a leaching process under conditions such that sulphide-sulphur is oxidized to s... | 03/14/1995 |
| 5332560 | Process for the removal of zinc and nickel from copper ammine sulfate solutions A method for the recovery of copper from copper-containing materials, for example, scrap, ores or dust. An aqueous cupric tetrammine sulfate lixiviant is contacted with the copper-containing material to produce a leachate containing cuprous, nickel, and z... | 07/26/1994 |
| 5316567 | Hydrometallurgical copper extraction process A process for the extraction of copper from a sulphide copper ore or concentrate comprises the steps of subjecting the ore or concentrate to agitation leaching at an elevated temperature and pressure to obtain a resulting acidic leach liquor containing di... | 05/31/1994 |
| 5279803 | Precious metal recovery process from carbonaceous ores A process for recovering at least one precious metal from an ore containing carbonaceous material is disclosed. The process involves the use of promoting amounts of certain metal redox couples and/or metal components, in particular, certain metal complexe... | 01/18/1994 |
| 5279802 | Precious metal recovery process from sulfide ores A process for recovering at least one precious metal from an ore containing carbonaceous material is disclosed. The process involves the use of promoting amounts of certain metal redox couples and/or metal components, in particular, certain metal complexe... | 01/18/1994 |
| 5271909 | Method of tellurium separation from copper electrorefining slime A method of increasing the extraction of tellurium from copper electrorefining slime comprises leaching the slime with dilute sulphuric acid in a reactor under a partial oxygen pressure of up to 150 psi and at an elevated temperature between about 100° a... | 12/21/1993 |
| 5232490 | Oxidation/reduction process for recovery of precious metals from MnO2 ores, sulfidic ores and carbonaceous materials A process for separating precious metals from an MnO2, sulfidic or carbonaceous refractory ore or refractory feed such as tailings is provided. The process includes the step of leaching a feed with a leach liquor that includes an acid selected ... | 08/03/1993 |
| 5223024 | Hydrometallurgical copper extraction process A process for the extraction of copper from a copper ore or concentrate comprises first subjecting the ore or concentrate to agitation leaching at an elevated temperature and pressure in the presence of oxygen and water to obtain a resulting acidic leach ... | 06/29/1993 |
| 5200042 | Process to recover pure copper during purification of zinc sulfate solution A process for recovery of copper from a copper residue obtained during purification of a zinc sulfate solution comprises leaching the copper residue in a concentrated sulfuric acid solution in the presence of an oxidant at a temperature of between 60° an... | 04/06/1993 |
| 5173276 | Method for recovery of copper from copper-containing materials A process for precipitating solid hydrates of cupric tetrammine sulfate from a solution, wherein the solution contains at least 40 grams per liter of free ammonia, at least 50 grams per liter of ammonium sulfate and wherein the temperature of the solution... | 12/22/1992 |
| 4960584 | Adjustable emitter for heap leach mining percolation system and method A system for heap leach mining comprises supply and header pipes for conducting a leaching solution alongside a bed or "heap" of crushed metal-laden ore deposited on an impervious pad. A series of spaced tubes are connected to the supply and header pipes ... | 10/02/1990 |
| 4875935 | Anionic acrylamide polymers as copper ore agglomeration aids An improved method for extracting copper from copper minerals by heap leaching with dilute sulfuric acid which comprises agglomerating the copper mineral fines prior to their being formed into an heap with an agglomerating agent comprising an anionic acry... | 10/24/1989 |
