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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7879132 | Method for reduction treatment of metal oxide or ironmaking waste and method for concentration and recovery zinc and/or lead A method of reduction treatment of metal oxides characterized by using as a material a powder containing metal oxides and containing alkali metals and halogen elements and further, in accordance with need, carbon, mixing said material with water to produce a slurry,... | 02/01/2011 |
| 7585350 | Production of ferronickel A process for producing a ferronickel product from a mixed nickel iron hydroxide product, said process including the steps of: providing a mixed nickel iron hydroxide product; pelletising the mixed nickel iron hydroxide product to produce nickel iron hydroxide pelle... | 09/08/2009 |
| 7341658 | Recovery of heavy minerals from a tar sand A process for recovering heavy minerals (e.g., titanium minerals such as TiO2) from a feedstock comprising tar sands or a tar sands-derived solids fraction. The feedstock comprises bitumen and heavy minerals. The process comprises the steps of: (i) contac... | 03/11/2008 |
| 7335343 | Preparation of iron pentacarbonyl Iron pentacarbonyl is prepared by reacting iron with carbon monoxide in suspension and in the presence of a mixture of alkali metal sulfide and sulfur as a catalyst. ... | 02/26/2008 |
| 7335618 | Method for manufacturing hydrorefining catalyst, and metal recovery method A heavy oil is hydrorefined using a hydrorefining catalyst. A spent hydrorefining catalyst whose activity has decreased is heat treated (S1) and pulverized to obtained a regenerated powder (S2). This regenerated powder is fractionated according to its ... | 02/26/2008 |
| 7329396 | Process for the recovery of value metals from material containing base metal oxides A process for leaching a value metal from oxidic materials, such as a lateritic nickel ore, comprising the step of leaching the ore with a lixiviant comprising a cationic salt (e.g., magnesium chloride) and hydrochloric acid is disclosed. An oxidant or additional me... | 02/12/2008 |
| 7228960 | Hot material conveyor A conveyor for hot material comprising a conveying unit for conveying the hot material, a material delivery unit for delivering the hot material to the conveying unit, a housing for covering at least a portion of the length of the conveying unit, introduction device... | 06/12/2007 |
| 7056400 | Method of separating superalloy metal powder from admixed contaminants A method is provided for separating superalloy metal powder from contaminants, such as process-produced contaminants, by enhancing the magnetic properties thereof, such as by oxidizing or leaching of chromium, for example, followed by magnetic separation of the cont... | 06/06/2006 |
| 6797033 | Method for recovering catalytic metals A method for recovering catalytic metals from fluids containing catalytic metal colloids. Fluid compositions such as rinse solutions or dragout baths containing catalytic metal colloids are passed through a filter that entraps catalytic metal colloids on the filter.... | 09/28/2004 |
| 6773485 | Method for recovering catalytic metals using a porous metal filter A method for recovering catalytic metals from fluid compositions containing catalytic metal colloids. Fluid compositions such as aqueous rinse solutions or dragout baths containing catalytic metal colloids are passed through a porous metal filter that entraps the ca... | 08/10/2004 |
| 6652620 | Method for manufacturing reduced iron briquettes A method for cooling hot reduced iron briquettes at low cost without degrading the strength is provided. The method includes a primary cooling step of cooling the hot reduced iron briquettes by steam at a cooling rate of 4.0° C./s or less, a secondary co... | 11/25/2003 |
| 6500229 | Method for treating steel works dust by wet process A method for treating steel works dust in order to recuperate elements capable of being upgraded. The method comprises attrition in water followed by hydraulic grading of the resulting load. The method is characterized in that is further comprises: a wash... | 12/31/2002 |
| 6402807 | Method for wet smelting of iron family metal bearing ores A smelting process wherein very pure iron or various iron family metals are economically obtained from ores which contain iron family metals by hydrometallurgy. The process involves: (a) grinding an ore containing iron family metals to pulverize the ore i... | 06/11/2002 |
| 6274104 | Non-ferrous metal recovery method utilizing a melt sulphation reaction The invention relates to a method for recovering non-ferrous metals, particularly nickel, cobalt, copper, zinc, manganese and magnesium, from materials containing said metals by converting said non-ferrous metals into sulphates by means of melt and melt c... | 08/14/2001 |
| 6193941 | Process for producing a metallurgical raw material from oil containing heavy metals Besides a synthesis gas, a metallurgical raw material is to be produced from an oil containing heavy metals. To do this, the oil is partially oxidized and the heavy metal-containing soot is separated and burnt and the heavy metals thus occurring as ash ca... | 02/27/2001 |
| 6019813 | Cobalt metal agglomerates, process for producing the same and their use The present invention relates to cobalt metal agglomerates consisting of peanut-shaped primary particles with average particle sizes in the range from 0.5 to 2 μm, to a process for the production thereof and to the use thereof.... | 02/01/2000 |
| 6015447 | Cobalt metal agglomerates, a method of producing them and their use The present invention relates to cobalt metal agglomerates consisting of peanut-shaped primary particles, to a process for the production thereof and to the use thereof.... | 01/18/2000 |
| 5968228 | Process for preparing cobalt metals using nitrogen reductant The present invention relates to a process for preparing cobalt metals by reducing cobalt oxides with ammonia or nitrogen/hydrogen gas mixtures. In accordance with the present invention, a cobalt metal is economically prepared by reacting a cobalt oxide w... | 10/19/1999 |
| 5849063 | Production of direct reduced iron and/or pig iron from industrial waste streams A method for producing direct reduced iron or/and pig iron from an industrial waste materials stream such as EAF and blast furnace dust generally comprising the steps of separating the materials contained in the waste materials stream by magnetic separati... | 12/15/1998 |
| 5772728 | Method for upgrading of silicon-containing residues obtained after leaching of copper-containing residues from chlorosilane synthesis The present invention relates to a method for upgrading silicon-containing solid residues obtained after leaching of copper from copper-containing residues from direct synthesis of organochlorosilanes. Solid residue, optionally together with an oxidation ... | 06/30/1998 |
| 5702500 | Integrated process for the recovery of metals and fused alumina from spent catalysts An integrated process for the treatment of spent catalysts containing mainly molybdenum, vanadium, nickel, cobalt and, alumina to produce ammonium metavanadate, vanadium pentoxide, molybdic trioxide, fused alumina and a high grade nickel/cobalt alloy esse... | 12/30/1997 |
| 5667665 | Process of producing high purity cobalt A process for producing a high purity cobalt is provided comprising the following steps. An aqueous solution of cobalt chloride having a hydrochloric acid concentration of 7 to 12N is provided. The solution includes either or both of Fe and Ni as impuriti... | 09/16/1997 |
| 5582631 | Method for the production of a feedstock containing usable iron constituents from industrial waste streams A method for the production of an iron-based feedstock suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by combining an iron poor material such as exhaust fumes from metals production processes with the was... | 12/10/1996 |
| 5578110 | Environmentally acceptable method of disposing of an inflator from an air bag system loaded in a scrapped automobile A method by which numerous gas generators from unused air-bags can be scrapped in an environmentally acceptable manner. The method consists of a) heating the gas generator to actuate the generator to produce combustion gases and an actuated generator having wa... | 11/26/1996 |
| 5571308 | Method for recovering nickel from high magnesium-containing Ni-Fe-Mg lateritic ore A method is provided for recovering nickel from high magnesium-containing lateritic ores which also contain iron. The ores which are referred to as saprolitic ores are subjected to leaching with a mineral acid from the group consisting of HCl, H2 | 11/05/1996 |
| 5571306 | Method for producing an enriched iron feedstock from industrial furnace waste streams A method for the production of an enriched iron product, specifically direct reduced iron and iron oxide suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by combining an iron oxide rich material such as mil... | 11/05/1996 |
| 5534155 | Method for purification of cooling agents and/or lubricants used in rolling mills For purification of liquids used for cooling and/or lubrication interspersed with metallic and/or other materials contaminations, especially for separation of rolling scale and of substances containing oil or grease from the industrial process water in op... | 07/09/1996 |
| 5385600 | Method for beneficiating nickel sulfide concentrates and corresponding mixtures, unsuitable for smelting The invention relates to a method for fully beneficating nickel sulfide concentrates or other corresponding mixtures, unsuitable for smelting, by combining the use of both pyrometallurgical and hydrometallurgical processes, so that there are formed two se... | 01/31/1995 |
| 5364441 | Cotreatment of sewage and steelworks wastes Steelworks dusts or sludge is mixed into sewage preferably in the presence of a flocculating agent to provide a rapid separation of a clear effluent and a sludge which is dewatered and dried to form a solid material adapted to entrap harmful materials in ... | 11/15/1994 |
| 5352270 | Method for recycling metal containing electrical components The present invention relates to methods of recycling metal containing electrical components to recover one or more metal values therefrom by comminuting the used metal containing electrical component, preferably in an inert environment, separating water ... | 10/04/1994 |
| 5124008 | Method of extraction of valuable minerals and precious metals from oil sands ore bodies and other related ore bodies A method for the extraction of valuable minerals and precious metals from oil sands ore bodies or other related ore bodies that is synergistically unique in the arrangement of processes for production of valuable minerals and precious metals in an economi... | 06/23/1992 |
| 4986977 | Recovery of useful products from by-products of phosphate conversion coating process The process is described for treating the sludge formed in a phosphate conversion bath, and in particular, in zinc phosphate conversion baths to convert the sludge into useful chemical materials thereby eliminating the need for disposal to landfill. The p... | 01/22/1991 |
| 4954265 | Method of processing spent electroless bath and bath for use therein A method of processing an aqueous feed liquid to precipitate at least one metal (e.g., copper, nickel or a combination thereof) in a form to make the metal subsequently removable from the feed liquid by filtration, comprises the initial step of mixing (i)... | 09/04/1990 |
| 4840776 | Method for removing sodium and ammonia from cobalt A method is disclosed for purifying cobalt of sodium and ammonia which involves heating a solution of hexammine cobalt (III) chloride at a temperature of at least about 80° C., adding sodium hydroxide to the solution at a rate of addition not exceeding a... | 06/20/1989 |
| 4830997 | Process for regenerating used catalysts by means of hydrogen peroxide aqueous solution stabilized with an organic compound The process has as an object the regeneration of catalysts containing at least one contaminating metal of the vanadium, nickel and iron group. The operation is conducted as follows: (a) The catalyst (1) is roasted in the presence of an oxygen-containing gas ... | 05/16/1989 |
| 4826666 | Method of preparing metal carbides and the like and precursors used in such method Preparation of metal carbides, nitrides, borides, silicides and phosphides, also metal alloys and pure metals, by providing a precursor in which there are organic ligands bonded to the metal or metals, such precursor having the element X also bonded direc... | 05/02/1989 |
| 4816236 | Recovery of vanadium and nickel from petroleum residues A process is provided for the recovery of vanadium and nickel values from petroleum residues and, in particular, from Flexicoke. In the process, Flexicoke is blended with an alkali metal source, such as sodium sulfate or sodium carbonate, and then roasted... | 03/28/1989 |
| 4585477 | Method for separating and recovering nickel and copper from complex materials A method of recovering copper and nickel from sulphidic minerals containing copper, nickel and iron comprises the steps of roasting the mineral, preferably to provide magnetite; sulphating, for example with sulphuric acid, sulphur trioxide, metal sulphate... | 04/29/1986 |
| 4561887 | Process for recovering metals from solution through solvent extraction and pyrometallurgical reduction Solvent extraction is used for selective recovery of a dissolved metal such as copper from an aqueous solution of metals by means of an organic liquid, immiscible with the aqueous solution and selective for the metal of interest. The metal is extracted fr... | 12/31/1985 |
| 4466828 | Process for smelting nickel The present invention concerns a process for smelting nickel which comprises treating nickel-containing material with a reducing gas to reduce the nickel component contained in the nickel-containing material and thereby produce metallic nickel; soaking th... | 08/21/1984 |
