Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7192564 | Method for recycling spent lithium metal polymer rechargeable batteries and related materials The method relates to a pyrometallurgical and hydrometallurgical process for the recovery and recycling of lithium and vanadium compounds from a material comprising spent rechargeable lithium batteries, particularly lithium metal gel and solid polymer electrolyte re... | 03/20/2007 |
| 7119517 | Method for recycling secondary battery A method features the steps of determining whether a secondary battery collected from a user is reusable when being handed over again to the user after being recharged, by performing a simple inspection on a site where the battery is received and returned to the use... | 10/10/2006 |
| 7109138 | Composition for preparation of silicon carbide powder The synergistic composition consists of a mixture of a source of pure silica such as silicon dioxide, a source of carbon such as activated charcoal, β-silicon carbide and a source of iron such as ferric nitrate. The cost effective synergistic composition is useful ... | 09/19/2006 |
| 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 |
| 6592644 | Sulfidization of sulfide ores for hydrometallurgical extraction of copper and other metals The invention relates to a method for the extraction of metals from copper sulphide and/or copper iron sulphide ores with microbiological- and chemical-type leaching steps for dissolution of the metals, which comprises the following steps: 1) In a convers... | 07/15/2003 |
| 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 |
| 5993512 | Method and system for recycling byproduct streams from metal processing operations A method and system for recycling byproduct streams from metal processing operations introduces a flow of a molten mixture of salts, metal and metal oxides from a melting vessel into a flow of water. The molten salts dissolve into the water. The metal oxi... | 11/30/1999 |
| 5855645 | Production of more concentrated iron product from industrial waste materials streams A method for producing a more concentrated iron product from an industrial waste materials stream comprising iron and non-iron constituents such as EAF and basic oxygen furnace dust generally comprising the steps of compacting or briquetting the waste mat... | 01/05/1999 |
| 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 |
| 5846290 | Method for the recovery of group IA salts during the treatment of industrial process waste streams A method for the production of Group IA salts during a process for the recycling of industrial waste streams containing Group IA compounds and iron and/or zinc compounds, by heating the waste stream in a reducing atmosphere, treating the exhaust fumes fro... | 12/08/1998 |
| 5827347 | Process for the recovery of lead from spent batteries A process for the recovery of lead from spent battery paste and lead containing materials. The process includes the steps of calcination of a spent paste treated with an alkali carbonate or hydroxide or any mixture thereof, and elemental sulphur at a temp... | 10/27/1998 |
| 5803947 | Method of producing metallic magnesium, magnesium oxide or a refractory material Metallic magnesium and pure magnesium oxide are produced by carbothermal reduction of starting materials such as magnesium oxide containing minor amounts of oxides of Fe, Si, Ca and Al, and/or magnesium silicate minerals, such as olivine, at subatmospheri... | 09/08/1998 |
| 5788739 | Process for recovering metallic lead from exhausted batteries The present invention relates to a process for the recovery of metallic lead from exhausted lead-acid batteries. According to the invention, the metallic scrap obtained thereof is treated by a smelting operation which is carried out under a layer of a mol... | 08/04/1998 |
| 5766307 | Method of treating zinc-containing substance Method and apparatus for collecting valuable products, particularly zinc, from a zinc-containing substance such as electric furnace dust. A shaft type smelting reduction furnace has a packed bed of a carbonaceous solid reducing agent and has upper and low... | 06/16/1998 |
| 5755853 | Process for the treatment of solid residues containing metals, in particular residues from the cleaning of household garbage incineration smoke This process comprises; mixing (1) the solid residues with a solid reducing agent; treating (2) the mixture in a furnace at a temperature above 1000° C. to obtain (3) a vitrified product rendered poor in metals and an emission of gas enriched in metallic... | 05/26/1998 |
| 5730774 | Process for upgrading titaniferous materials A process for removing impurities from a titaniferous material that has been subjected to thermal reduction and which includes a titaniferous phase of general formula M3 O5. The thermally reduced titaniferous material is subjected to... | 03/24/1998 |
| 5728197 | Reclamation process for tungsten carbide/cobalt using acid digestion Tungsten carbide cobalt and tungsten-containing materials are recycled using a single high-temperature oxidation with standard dilution chemistry. The scrap material is ground, oxidized, and subjected to an acid digestion, preferably in hydrochloric acid.... | 03/17/1998 |
| 5725632 | Method for processing and utilizing metalliferous presipitates from the gas cleaning phase in thermal waste treatment A method for processing hetrogeneous metal-containing deposits recovered from the cleaning of synthesis gas produced during the thermal treatment of wastes containing metals, including volatile metals, in equipment having a heating enclosure and a waste l... | 03/10/1998 |
| 5679131 | Method for producing titanium oxide from ore concentrates A method for producing titanium dioxide from an iron-containing titanium ore concentrate includes heating the ore concentrate in the presence of a reducing agent to provide a sintered reaction product including a titanium salt of the alkali metal and meta... | 10/21/1997 |
| 5667555 | Method for the removal of calcium by products during the production of an iron feedstock A method for the removal of calcium byproducts created during the production of an iron-based feedstock suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by treating the waste stream with an ammonium chlorid... | 09/16/1997 |
| 5647876 | Method of removing volatile metals from slag using an acid wash A method is disclosed for recovering condensed solidified volatile metals from the slag that exits the reactor section of a partial oxidation reactor. In a partial oxidation reactor, condensed solidified volatile metals become adsorbed to the surface of t... | 07/15/1997 |
| 5613998 | Reclamation process for tungsten carbide and tungsten-based materials Tungsten carbide and/or tungsten can be recycled by oxidizing the tungsten composition at a temperature greater than 700° C. to form a water insoluble tungsten trioxide. This is then reduced to form tungsten dioxide. The tungsten dioxide is subjected to ... | 03/25/1997 |
| 5356455 | Process for recovering lead from lead-containing raw materials There is proposed a process for recovering lead, comprising the steps of: feeding molten caustic soda, lead-containing feed and an oxygen-containing gas into a reaction some having a temperature of 600° to 700° C. as a result of which there are obtained... | 10/18/1994 |
| 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 |
| 5322548 | Recovery of niobium metal Ferroniobium, ferrotantalum and ferrovanadium alloys are hydrogenated to facilitate crushing then nitrided, and then acid-leached to produce a soluble iron nitride leachate and a niobium, tantalum or vanadium nitride residue which residue can be denitride... | 06/21/1994 |
| 5290535 | Process for recycling saltcake Saltcake generated by the aluminum industry is completely recycled through a process that simultaneously liberates the contained aluminum metal and dissolves the soluble salt fluxes to recover aluminum metal, aluminum oxide and salt fluxes by temperature ... | 03/01/1994 |
| 5221325 | Process for recovering silver oxide and metals from spent silver oxide button cells A process for recovering silver oxide and metals from a spent silver oxide button cell. The process relates to a physical process which consists of a heating and a cooling process to separate the shell and the content (silver, silver oxide) of the spent s... | 06/22/1993 |
| 5120353 | Hydrometallurgic method for processing raw materials containing zinc sulphide The invention relates to a method for recovering various valuable materials in connection with the hydrometallurgical production of zinc. The method is particularly suited for feeding different types of raw materials into the various stages of a process c... | 06/09/1992 |
| 5039336 | Recovery of scandium, yttrium and lanthanides from zircon sand This is a process for extracting scandium from zircon ore. It utilizes feeding zircon sand to a fluidized bed chlorinator at about 1000° C. to produce a vaporous (principally zirconium and silicon chlorides) phase and a solid residue and recovering scand... | 08/13/1991 |
| 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 |
| 4985216 | Reduction roasting of metal ores A process is provided for the reduction roasting of ores using a C2 to C8 hydrocarbon. The process is particularly applicable to manganese dioxide containing ores and provides enhanced reduction of the manganese to lower oxidation st... | 01/15/1991 |
| 4789446 | Method of processing residues from the hydrometallurgical production of zinc In conjunction with an electrolytic production of zinc, the residues are processed so that the residue is leached with cell acid at a temperature from 50° to 100° C. in such a manner that a concentration of free acid from 10 to 100 g/l is obtained at th... | 12/06/1988 |
| 4778520 | Process for leaching zinc from partially desulfurized zinc concentrates by sulfuric acid A process comprises leaching zinc oxide either separately or in conjunction with iron oxides from a partially desulfurized zinc bearing sulfide ore of concentrate. The ore is pretreated to eliminate in a controlled manner sulfur-sulfur-sulfide in the ore ... | 10/18/1988 |
| 4756889 | Process for recovering metals and metallic salts A process for recovering solder alloys and metallic salts from ZnCl2 -containing dross/flux salt feedstock by (1) heating a quantity of the feedstock to melt the salts and to separate and/or to draw off free metal, (2) infusing and concomitantl... | 07/12/1988 |
| 4725312 | Production of metals by metallothermia The metals of Groups (IV)(B) or (V)(B) of the Periodic Table, or of the lanthanide series, e.g., titanium metal, are conveniently produced, notably in powder form, by reducing a salt of such a metal by contacting same with liquid admixture comprising lith... | 02/16/1988 |
| 4725414 | Process for producing gallium-containing solution from aluminum smelting dust 5 to 50 wt. % of an alkaline flux such as sodium carbonate, sodium hydroxide, potassium carbonate and potassium hydroxide is added and mixed to aluminum smelting dust. The mixture is roasted, the roasted mixture is acid-leached with mineral acids such as ... | 02/16/1988 |
| 4671803 | Process for producing synthesis gas free-from volatile metal hydrides Process for producing synthesis gas, reducing gas, or fuel gas substantially free-from volatile metal hydride impurities e.g. a hydride of arsenic, germanium, antimony, lead, tin, silicon, and mixtures thereof starting with the partial oxidation of liquid... | 06/09/1987 |
| 4579589 | Process for the recovery of precious metals from a roaster calcine leach residue A process for separating precious metals from a roaster calcine leach residue from a process wherein copper or zinc sulfides are roasted to produce a copper or zinc calcine; the calcine is leached with an aqueous sulfuric acid leaching solution to produce... | 04/01/1986 |
| 4490174 | Process for the preparation of a ferronickel concentrate A ferronickel concentrate is produced by reducing a lateritic ore comprising less than 1.5% w of nickel at a temperature of from 920° to 1120° C. with a CO/CO2 mixture in the presence of a S-compound, such as Na2 SO4 or ... | 12/25/1984 |
| 4437888 | Preparation of titanium/aluminum alloys Alloys comprising titanium and aluminum, or titanium, aluminum and at least one of the metals M, wherein M is vanadium, zirconium, chromium, niobium, tantalum and/or iron, are facilely prepared by reducing an alkali metal fluotitanate, or coreducing admix... | 03/20/1984 |
