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| Number | Title | Issue Date |
| 7226273 | Method of generating compressed air, and compressor arrangement for implementing the method Method and compressor arrangement for generating compressed air, particularly for commercial vehicles, which is generated by way of a compressor unit (3) driven by an internal-combustion engine (1) from the ambient air according to a control unit (1... | 06/05/2007 |
| 6964595 | Child's infant-care play center A child's infant-care play center includes a table having a recessed bath tub and a changing-table/bed removably disposed over the tub. Upstanding dividers and a headboard demarcate respective bathing/changing/sleeping and washing-sink/eating areas on the table. A f... | 11/15/2005 |
| 6551548 | Apparatus for producing reduced iron and compact drying An apparatus for producing reduced iron, and a compact drying method for application to the apparatus are disclosed. The apparatus comprises a pelletizer or a briquetter for mixing and agglomerating coal as a reducing agent and iron ore as iron oxide to f... | 04/22/2003 |
| 5474280 | Apparatus for preheating a reactor feed A method and apparatus for preheating a reactor feed, comprised of an iron ore (10) and a process gas (21), in an iron carbide process for making steel is provided. The apparatus comprises a process gas preheater (40) having a furnace (56) and a heat exch... | 12/12/1995 |
| 5397109 | Reduced emissions metal melting furnace A vertical shaft furnace for melting non-ferrous metals, such as copper, aluminum, and their alloys, includes metal blocks disposed in an annular wall just beneath the charging section of the furnace. Preheated air is forced into the furnace shaft through... | 03/14/1995 |
| 5244489 | Process for supplying a blast furnace with air enriched in oxygen, and corresponding installation for the reduction of iron ore There is produced by an air distillation apparatus (4) a desired fraction of air from the stream of air leaving at least one blower (3) of the blast furnace, and there is sent to the blast furnace the oxygen produced by this distillation apparatus. The di... | 09/14/1993 |
| 4830093 | Method and apparatus for utilizing waste heat in a combustion system An improved method and apparatus for recovery of waste heat of the type having a first heat exchanger which transfers heat to a working fluid and a second heat exchanger which transfers heat from the working fluid is disclosed. The improvement comprises t... | 05/16/1989 |
| 4556418 | Process for melting a ferrous burden A process for melting a ferrous burden comprising scrap iron, scrap steel, pig iron, direct reduced iron or mixtures thereof without the use of coke is provided. Air or enriched air as a primary oxidant is preheated and together with fuel is combusted to ... | 12/03/1985 |
| 4494927 | Centralized ladle heating and drying system Several ladles (11-14) for receiving hot metals are preheated by applying a lid (40, 42) to the rim of each ladle and directing an open flame through the lid into the ladle. The hot exhaust gases move back through the lid and through a heat exchanger (35-... | 01/22/1985 |
| 4432791 | Ceramic radiant tube heated aluminum melter and method of melting aluminium Disclosed are a method and apparatus for clean, low loss melting of aluminum using heat transfer by convection and radiation in separate stages. Heat input to a melter stage is provided by silicon carbide tubes into which gas-fueled burners fire so that t... | 02/21/1984 |
| 4432726 | Centralized ladle heating and drying system Several ladles 11-14 for receiving hot metals are preheated by applying a lid 40, 42 to the rim of each ladle and directing an open flame through the lid into the ladle. The hot exhaust gases move back through the lid and through a heat exchanger 35-38 to... | 02/21/1984 |
| 4364729 | Ladle heating system with air seal and heat shield A ladle for receiving molten metal is heated by a direct flame, by applying a lid to the rim of the ladle and directing an air stream through a heat exchanger and through the lid to the ladle, mixing fuel with the air and igniting the mixture and directin... | 12/21/1982 |
| 4359209 | Hot air ladle preheat station and method The hot air ladle preheat station comprises an outer casing defining an opening for receiving a separately supported ladle. The opening is dimensioned so as to form a dilution air space about the ladle exterior. A wall is spaced inward of the outer casing... | 11/16/1982 |
| 4354669 | Apparatus for regulating the quantities and percentages of the gaseous constituents of oxygen, nitrogen, carbon dioxide and water in reaction processes in metallurgical applications An apparatus is provided for regulating the percentage quantities of individual gases present in the combustion air supplied for reaction processes in metallurgy. A molecular sieve absorption material is used on the intake air to absorb the inert constitu... | 10/19/1982 |
| 4284419 | Declogging process for filtration installation and improved filtration installation The invention relates to an apparatus and a declogging process for filtration installation for dust-laden gases presenting reducing properties, consisting in taking dust-free gas at the outlet of the filtration installation, oxidizing this gas and using t... | 08/18/1981 |
| 4257579 | Waste heat recovery process and apparatus There is disclosed a process and apparatus for the recovery of heat from exhaust or waste gases having a temperature of from about 500° F. to about 2500° F. generated in a process operation having at least two heat recovery assemblies, each utilizing li... | 03/24/1981 |
| 4229211 | Ladle heating system Prior to the receipt of a charge of molten metal, a ladle is heated by a direct flame, by applying a seal to the rim of the ladle and directing air through a heat exchanger and to the ladle, mixing fuel with the air and igniting the mixture and directing ... | 10/21/1980 |
| 4154055 | Indirect Brayton energy recovery system An indirect Brayton cycle is employed for an energy recovery system useful for large mass flow applications, such as a cast-iron making cupola. Exhaust gases from the cupola (elevated in temperature due to conversion by burning to CO2 and due t... | 05/15/1979 |
| 4147334 | Method and apparatus of producing iron In a method of producing iron by direct reduction of the ore, compaction into agglomerates and fusion, where the ore is reduced by a gaseous process with pre-reduction to monoxide FeO at 1000° C., followed by a final reduction at 700° C. The resultant p... | 04/03/1979 |
| 4057705 | Fume extracting welding gun A compact, flexible, lightweight welding gun is provided, including a single outer tubular casing substantially containing all the weld gun components. Concentric disposition of annular fume evacuating passageways between the outer tubular casing and comp... | 11/08/1977 |
| 4010935 | High efficiency aluminum scrap melter and process therefor A high efficiency aluminum scrap melting system is provided in which a portion of the hot combustion gases employed to melt the aluminum in a hearth is recycled through scrap-receiving preheat compartments to preheat scrap and volatilize contaminants as t... | 03/08/1977 |
