Quotables
"The man with a new idea is a crank until the idea succeeds."
Samuel Clemens
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8070849 | Production of ferro-alloys A method for producing a ferro-alloy in an electric arc furnace is disclosed. The method comprises the steps of removing steel from a carbon-containing organic material, and charging the furnace with the carbon-containing organic material product. ... | 12/06/2011 |
| 8021458 | Production of ferro-alloys A method for producing a ferro-alloy in an electric arc furnace is disclosed. The method comprises the step of charging the furnace with an un-agglomerated carbon-containing polymer such that the polymer functions as a slag foaming agent. ... | 09/20/2011 |
| 6635096 | Method for optimizing the operating conditions of a submerged arc furnace A method for producing molten metal by the reduction and melting of raw materials in a submerged arc type electric furnace includes at least one electrode, where substantial amounts of slag are generated so that the electric furnace contains a bath of mol... | 10/21/2003 |
| 6508853 | Process for the production of metal melts To be able to produce metal melts using any metal carriers incurring in metallurgical practice as the charging materials, namely in the most diverse quantitative compositions, a plant for producing metal melts is provided with the following characteristic... | 01/21/2003 |
| 6395052 | Method for producing directly-reduced iron, liquid pig iron and steel The invention relates to a process for producing directly reduced iron, liquid pig iron and steel, in which charge materials, which are formed from iron ore, preferably in lump and/or pellet form, and, if appropriate, additions, are reduced directly, in a... | 05/28/2002 |
| 5968224 | Recovery of titanium values from titanium grinding swarf by electric furnace smelting A method for the recovery of valuable materials from titanium grinding swarf is provided comprising the steps of sieving the accumulated titanium grinding swarf to remove unwanted coarse trash and grinding wheel fragments, pelletizing, and smelting in an ... | 10/19/1999 |
| 5954855 | Method for electric steelmaking A method of melting and refining metals by high-temperature impinging combustion products generated by a single or multiple oxy-fuel or fuel/oxygen/air combustors that direct a flame towards a predetermined area of scrap to be melted. Once a portion of ch... | 09/21/1999 |
| 5817164 | Method and apparatus for making feedstock for steel making Improvements in metallurgical conversion in accordance with the present intion consist in the preparation of a semifinished item (a charge stock) in the form of a pig by forming thereof in a molding box of a casting machine from a solid filler, for the m... | 10/06/1998 |
| 5807420 | Process for reduction of iron with solid fuel objects as amended by exam A compressed briquette or other solid shape, object, or article useful as a coke substitute in blast furnaces disclosed as being manufactured so as to comprise a reaction product of fine carbonaceous material (such as coke breeze, coke fines, or petroleum... | 09/15/1998 |
| 5788920 | Oxygen blowing lance capable of being used in an electric furnace An oxygen blowing lance capable of directing oxygen jet streams onto a molten metal in an electric furnace, the lance being insertable into an electric furnace through a sidewall working port, the lance being positionable above the molten metal in the ele... | 08/04/1998 |
| 5788736 | Recovery of titanium values from titanium grinding swarf by electric furnace smelting A method for the recovery of valuable materials from titanium grinding swarf is provided comprising the steps of sieving the accumulated titanium grinding swarf to remove unwanted coarse trash and grinding wheel fragments, pelletizing, and smelting in an ... | 08/04/1998 |
| 5715272 | Device for charging an electric furnace Charging device for supplying liquid metal to an electric furnace with a shaft 15, the device consisting of a balcony 19 extending the shaft 15 of the furnace 10 laterally and communicating with the hearth of the furnace 10.... | 02/03/1998 |
| 5681367 | Method of producing hot metal A method for preparing iron bearing green pellets that can be processed in a rotary hearth furnace without degradation and become self-fluxing sponge iron pellets when charged to a submerged arc furnace operating at a lower temperature than the rotary hea... | 10/28/1997 |
| 5641336 | Process for draining overflow foam slag The invention relates to a furnace (1) for melting metal-bearing substances and/or production of liquid metal (4) of the type in which said metal (4) has above it a layer of slag (5) liable to be affected by a "foaming" phenomenon, in which a side wall of... | 06/24/1997 |
| 5599375 | Method for electric steelmaking A method of melting and refining metals by high-temperature impinging combustion products generated by a single or multiple oxy-fuel or fuel/oxygen/air combustors that direct a flame towards a predetermined area of scrap to be melted. Once a portion of ch... | 02/04/1997 |
| 5588982 | Process for producing foudry iron A submerged arc furnace produces foundry iron from scrap iron and steel sources where little or no slag is produced. Scrap iron or steel is fed into the submerged arc furnace with a source of silica and a carbonaceous reducing agent. The scrap iron and st... | 12/31/1996 |
| 5573572 | Process for the production of tantalum-niobium concentrates Process for the production of tantalum-niobium concentrates from low-tantalum, high-niobium raw materials with an Nb2 O5 /Ta2 O5 ratio of 5 to 15 in a pyrometallurgical concentration process by smelting with car... | 11/12/1996 |
| 5493580 | Process for recycling the filter dust in an electric arc furnace for producing steel The present invention relates to a process of recycling filter dust obtained during the production of steel in an electric arc furnace. Filter dust is injected and mixed with the smalls of carbon containing material in the slag or at the interface between... | 02/20/1996 |
| 5429655 | System for removing non-metallic foreign matter in molten metal An apparatus for removing non-metallic foreign matter in a molten steel includes a tundish and a coil device. The tundish is an intermediate container receiving the molten steel from a ladle and feeding a purified molten steel by removing the non-metallic... | 07/04/1995 |
| 5238484 | Plant for the production of molten metals and method A plant for the production of molten metals, includes a melting vessel and a metallurgical vessel receiving the melt from the melting vessel for aftertreating the melt and closed by a lid. The melting vessel has a tap opening for the melt provided on the ... | 08/24/1993 |
| 5174810 | Ferrosilicon smelting in a direct current furnace The present invention is a process for smelting ferrosilicon alloy. The process comprises adding a carbon source and tailings comprising oxides of silicon and iron to a substantially closed furnace. Heat is supplied to the furnace by striking a direct cur... | 12/29/1992 |
| 4971622 | Sulphur and silicon control in ferrochromium production A method for sulphur and silicon control in the production of ferrochromium is characterized by controlling the reducing conditions in a melting furnace into which have been fed the highly pre-reduced products of a reduction smelter and by adjusting the C... | 11/20/1990 |
| 4820341 | Process for producing silicon or ferrosilicon in a low-shaft electric furnace A process for the production of silicon in a low-shaft electric furnace, in which raw-material blanks are first formed which contain fine-grain silicon dioxide, e.g. in the form of sand, and carbon in excess in respect of the reduction to silicon carbide ... | 04/11/1989 |
| 4802918 | Case hardened steel and method of manufacturing the same A case hardened steel having small oxygen, sulfur, and phosphorous contents and consisting essentially of, by weight, 0.10-0.30% carbon, not more than 0.50% silicon, not more than 1.50% manganese, not more than 0.012% phosphorous, not more than 0.009% sul... | 02/07/1989 |
| 4767451 | Method of operating an electric arc furnace In the method of producing steel by providing a vessel containing ferrous metal to be melted and passing electric current into the metal to melt the same by means of at least one electrode connected to an exterior source of electrical power, the improveme... | 08/30/1988 |
| 4699654 | Melting furnace and method for melting metal A melting furnace and method for melting metal comprising the injection of inert gas into molten metal at a defined location as a concentrated plume to create localized surface agitation, and high quality refractory surrounding the gas injection means at ... | 10/13/1987 |
| 4689076 | Method of operating metallurgical furnace and a metallurgical furnace apparatus A method of operating a metallurgical furnace, and a furnace apparatus capable of using this method, in which coal is pulverized in a pulverizer vessel by interparticle collisions in at least one stream of gaseous medium, to produce ultrafine pulverized c... | 08/25/1987 |
| 4659374 | Mixed binder systems for agglomerates A novel mixed binder system for agglomerates is disclosed. The agglomerates are suitable for use in the production of metals and alloys in a carbothermic reduction process such as the production of silicon in a direct arc furnace by the carbothermic reduc... | 04/21/1987 |
| 4650517 | Method of heating molten steel by arc process Three electrodes are dipped into slag on molten steel in a ladle. The electrodes are connected to a three-phase AC voltage. An arc is formed between each electrode and molten steel upon energizing the electrodes. The molten steel is heated by arc heat. Ea... | 03/17/1987 |
| 4576637 | Process for preparing silicon-base complex ferrous alloys A process for the continuous preparation of silicon-base complex ferrous alloys from cheap raw materials by preparing a charge with a high electric resistance and reducing the same in an electric arc furnace. A charge is assembled which contains the total... | 03/18/1986 |
| 4490169 | Method for reducing ore Low grade ores, such as low-grade manganese ore, are reduced in an electric smelting furnace having two melting zones divided by a barrier. The ore and a small quantity of carbon are melted in the first zone at a temperature sufficient to reduce the iron ... | 12/25/1984 |
| 4398945 | Process for producing a ferronickel alloy from nickel bearing laterites The object of the invention is to provide a process for the recovery of iron and nickel from low iron content laterite ores. Said process comprises subjecting the ore to a carburizing step in the presence of a reducing agent and carbon supplying agent to conve... | 08/16/1983 |
| 4362556 | Arc furnace steelmaking involving oxygen blowing In arc furnace steelmaking, oxygen gas is blown in the molten steel at melting period and/or oxidizing period so as to decrease the carbon content therein to 0.20% or less, preferably 0.15% or less, and subsequently, carbonaceous material is blown in the ... | 12/07/1982 |
| 4252559 | Process for processing cast iron suitable for foundry moulding The process comprising supplying an electric arc furnace with ferrous products and fluxes so as to form a bath of metal and slag and adding carbon to the bath of metal. The ferrous products are pre-reduced ores which are continuously introduced into the f... | 02/24/1981 |
| 4194901 | Process for producing graphite agglomerates, and products obtained by it A process for producing graphitic agglomerates, comprising the steps of: ing together in a suitable mixer a very fine graphitic powder, a coal such as anthracite, pitcoal, coke etc., and a binder such as coal tar pitch, starch, lignan and its derivatives... | 03/25/1980 |
| 4177061 | Method for making iron-chromium alloys Iron-chromium alloys, such as stainless steels, are made in a direct arc DC electric arc furnace with a bath of molten steel scrap in the hearth and functioning as the anode with the arcing electrode cathodic, while feeding chromium-oxide to the bath at t... | 12/04/1979 |
| 4146390 | Furnace and method for the melt reduction of iron oxide A DC arc furnace has a cathodic tubular graphite electrode forming an arc with an anodic carbonaceous iron melt in the furnace. A mixture of iron oxide and carbon particles is fed to the melt via the electrode's interior with the mixture's carbon content ... | 03/27/1979 |
| 4060409 | Mechanically stirred furnace for pyrometallurgical operations and processes The present specification discloses a pyrometallurgical system for maintaining a material in a molten state, the system comprising a vessel for molten material, the vessel conceptually dividable into a number of substantially uniform cells. A mechanical s... | 11/29/1977 |
| 4053301 | Process for the direct production of steel A process for the direct production of steel from particulate iron oxides or concentrates including two major steps in which in Step (1) the iron oxides are converted to iron carbide and in Step (2) steel is produced directly from the carbide in the basic... | 10/11/1977 |
| 4021232 | Cast iron melting process A cast iron melting process comprising the steps of charging recarburizer in the lower portion of an electric arc furnace, charging iron scraps, and charging oxidizing slag-forming agents and/or sponge irons, and/or blowing oxygen therein to make oxidizin... | 05/03/1977 |
