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| Number | Title | Issue Date |
| 6451246 | Molten metal vessel for filtering impurities A molten metal vessel includes a first chamber for containing molten metal such as molten aluminum therein, a filtration chamber in which impurities contained in the molten metal are removed, and a second chamber for reserving clean molten metal to be sup... | 09/17/2002 |
| 6290900 | Molten metal vessel for filtering impurities A molten metal vessel includes a first chamber for containing molten metal such as molten aluminum therein, a filtration chamber in which impurities contained in the molten metal are removed, and a second chamber for reserving clean molten metal to be sup... | 09/18/2001 |
| 6264722 | Process for producing liquid pig iron or intermediate steel products and installation for implementing it In a process for producing molten pig iron or steel preproducts from fine-particulate iron containing material in a meltdown gasifying zone of a melter gasifier, under the supply of carbon-containing material and oxygen-containing gas at the simultaneous ... | 07/24/2001 |
| 6241798 | Iron smelting process and plant according to the multiple zone smelting process In order to be able to process in an economical manner different iron carriers in varying quantitative compositions, a plant for the production of iron melts (4), in particular steel melts, such as crude steel melts, is equipped with an electric are furna... | 06/05/2001 |
| 6113670 | Twin chamber combustion furnace Refractory lined metal melting furnace for the melting and holding a plurality molten metals or alloys of different composition comprises a melting chamber, a plurality of passages communicating the melting chamber to a plurality of refractory lined, heat... | 09/05/2000 |
| 5888458 | Melting furnace of metals and melting method thereof Disclosed is a melting furnace of metals and melting method thereof, which can control the rate at which a metallic raw material is introduced from a preheating section to a melting section within an optimum range and which can achieve efficient melting o... | 03/30/1999 |
| 5336296 | Method of obtaining steel in a liquid bath and the device to carry it out The proposed method is characterized in that the liquid bath is constituted by the melt of low carbon steel and molten slag. Oxidation and reducing zones are created through which, along a closed path on the surface of the molten low-carbon steel, is circ... | 08/09/1994 |
| 5238486 | Method and furnace for production of liquid iron This non-blast process for the production of pig iron, cast iron, steel melt and nearly pure iron is carried out in a single furnace based on a tank-type design. Said types of iron melt can be produced in such single furnace individually or simultaneously... | 08/24/1993 |
| 5174746 | Method of operation of flash smelting furnace A method for operation of a flash smelting furnace comprising a reaction shaft, a settler connected at one end thereof to the lower portion of the reaction shaft and having a slag discharge port and a matte discharge port disposed on the side thereof, an ... | 12/29/1992 |
| 5064174 | Apparatus for production of energy and iron materials, including steel A process and arrangement are provided for the efficient generation of energy from coal, while at the same time providing for a relatively inexpensive step in processing of iron or steel, and the extraction of valuable materials such as oils from coal. An... | 11/12/1991 |
| 4931091 | Treatment of molten light metals and apparatus An apparatus and process are described for treating molten metal. The invention comprises: (a) a heated vessel having inlet and outlet means for the continuous flow of molten metal downwardly through the vessel, (b) a perforated plate extending horizontal... | 06/05/1990 |
| 4877449 | Vertical shaft melting furnace and method of melting A vertical shaft melting furnace wherein meltable solids are charged to the upper region of a bed supported only by a fluid cooled support grid having openings smaller than the average diameter of the charged solids wherein submerged combustion is maintai... | 10/31/1989 |
| 4824362 | Method for operation of flash smelting furnace A method of operating a flash smelting furnace which includes a reaction shaft, a concentrate burner disposed at the top of the reaction shaft, a settler disposed with one end thereof connected to the lower part of the reaction shaft, an uptake disposed a... | 04/25/1989 |
| 4798532 | Flash smelting furnace A flash smelting furnace which comprises a reaction shaft, a concentrate combustion device disposed at the top of the furnace shaft, a settler disposed with one end thereof connected to the lower part of the reaction shaft, an uptake disposed as connected... | 01/17/1989 |
| 4696458 | Method and plant for fully continuous production of steel strip from ore An apparatus for the continuous production of strip steel from ferrous ore includes a separate ore reducing furnace, a refining furnace, a degassing chamber and continuous casting means. The refining furnace includes inert gas injecting means connected to... | 09/29/1987 |
| 4645186 | Apparatus for processing sulphide concentrates and sulphide ores into raw material The present invention relates to a method and apparatus for treating sulphide concentrates of sulphide ores in order to produce raw metal in one and the same process unit (1). According to the invention, the molten matte (5) received from suspension smelt... | 02/24/1987 |
| 4627601 | Installation for the production of steel by pre-smelting of pig iron Installation according to the invention comprising a desilication and dephosphorization stage (A), followed by a decarburization stage and in which the pig iron to be pre-smelted is intended to form a bath whose free surface is maintained at a predetermin... | 12/09/1986 |
| 4598899 | Light gauge metal scrap melting system Disclosed is a system for remelting light gauge scrap metals which includes a remelting furnace with separate heating and melting chambers and pump means for inducing circulation of molten metal between the two. Also included are auger means adapted to in... | 07/08/1986 |
| 4591382 | Process and apparatus for recovering and purifying uranium scrap There is disclosed a process and apparatus for recovering metallic uranium from scrap containing metallic uranium by introducing such metallic uranium scrap into a bath containing, in molten form, at least one member selected from the group consisting of ... | 05/27/1986 |
| 4457777 | Steelmaking The invention provides an arrangement for steelmaking comprising a steel melt and initial reaction chamber arranged to receive source material in the form of scrap and/or pre-reduced iron, an overhead lance for the introduction of an oxidizing gas to the ... | 07/03/1984 |
| 4247087 | Furnace installation for the pyrometallurgical treatment of fine-grained ore concentrates A furnace assembly for the pyrometallurgical treatment of fine-grained ore concentrates including a housing in which there is located a reactor for reacting an ore concentrate and an oxygen-rich gas admitted thereto, the housing further having means there... | 01/27/1981 |
| 4200265 | Furnace for the melting and refining of copper A furnace for the melting and refining of raw copper and/or blister copper comprises a shaft furnace having a lock-chamber feeder for the material at the top of the shaft furnace and an opening into a hearth furnace in which the copper is refined. The sha... | 04/29/1980 |
| 4062657 | Method and apparatus for desulphurizing in the gasification of coal This application describes a process and apparatus for gasifying sulphur bearing coal in a molten iron bath which is covered with a sulphur absorbing slag. In order to make the process practical, the hot liquid slag is transferred to a second vessel in wh... | 12/13/1977 |
| 3942473 | Apparatus for accreting copper The present invention is directed to an improved apparatus for the formation by accretion of copper stock of substantially homogeneous composition intended to be subsequently formed by drawing, rolling, etc. into wire rods, sheets, tubes, strip or the lik... | 03/09/1976 |
