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| Number | Title | Issue Date |
| 7232542 | Preheating cold blast air of a blast furnace for tempering the hot blast temperature An improved blast furnace system for producing molten iron incorporating a preheater to heat the cold blast air used to temper the hot blast temperature is disclosed. The improved blast furnace system comprises a blast furnace, a hot blast main for conveying a suppl... | 06/19/2007 |
| 6464930 | Furnace of apparatus for manufacturing a semiconductor device having a heat blocker for preventing heat loss during the unloading of wafers The present invention relates to a semiconductor manufacturing furnace having a heat blocker mounted to an elevating plate of the furnace. The heat blocker prevents the internal temperature of the furnace from decreasing radically when a wafer boat is low... | 10/15/2002 |
| 6264464 | Angled bed for regenerative heat exchanger The present invention relates to one or more heat exchangers in communication with a combustion zone, each heat exchanger containing a matrix of heat exchange media, the matrix having a plurality of defined parallel or substantially parallel flow passages... | 07/24/2001 |
| 5954497 | Method for multi-stage calcining of gypsum to produce an anhydrite product A method and system for calcining gypsum to recover gypsum in a form consisting essentially of calcium sulfate anhydrite is disclosed. The method includes the steps of feeding the ground gypsum material into a first kettle and heating the ground gypsum in... | 09/21/1999 |
| 5947722 | Heat exchanger for particulate material A particulate material heating system and method for heating particulate material having a core which is heated to a predetermined temperature. The core has a plurality of serpentine passages which receive particulate material from a metering device havin... | 09/07/1999 |
| 5743728 | Method and system for multi-stage calcining of gypsum to produce an anhydrite product A method and system for calcining gypsum to recover gypsum in a form consisting essentially of calcium sulfate anhydrite is disclosed. The method includes the steps of feeding the ground gypsum material into a first kettle and heating the ground gypsum in... | 04/28/1998 |
| 5480300 | Vertical heat-treating apparatus and heat insulator It is an object of the present invention to provide a vertical heat treatment apparatus having a heat insulator, which has sufficient heat insulation, heat retention and high load pressure bearing properties to cope with increased size dimensions and numb... | 01/02/1996 |
| 5217373 | Limiting the presence of the oxides of nitrogen in regenerative heating systems The presence of the oxides of nitrogen in the exhaust gas leaving a regenerator is limited by injecting water or water vapour into the regenerator 1 during its firing phase and causing the water or water vapour to reach the combustion chamber 26 of the re... | 06/08/1993 |
| 4957430 | Limiting the presence of the oxides of nitrogen in regenerative heating systems The presence of the oxides of nitrogen in the exhaust gas leaving a regenerator is limited by injecting water or water vapor into the regenerator 1 during its firing phase and causing the water or water vapor to reach the combustion chamber 26 of the rege... | 09/18/1990 |
| 4781581 | Melting and holding furnace Melting and holding furnace in which melting (1) and holding (2) chambers are separated from one another, and are connected via openings (6). The holding chamber is designed to be deeper in order to receive the melt which flows out of the melting chamber ... | 11/01/1988 |
| 4768949 | Limiting the presence of the oxides of nitrogen in regenerative heating systems The presence of the oxides of nitrogen in the exhaust gas leaving a regenerator is limited by injecting water or water vapor into the regenerator 1 during its firing phase and causing the water or water vapor to reach the combustion chamber 26 of the rege... | 09/06/1988 |
| 4750274 | Sludge processing Methods for continuous drying of sludges. Large scouring particles are added to a sludge to be dried to create a mixture which is passed through a rotary screw type indirect heat exchanger. The scouring particles are large relative to the particulates of ... | 06/14/1988 |
| 4614496 | Cowper having no combustion shaft A cowper having no combustion shaft is presented wherein a combustion chamber is topped by a cupola and is positioned above the chequerwork. One or more burners are arranged symmetrically on the cupola wall, each burner being installed at a specific angle... | 09/30/1986 |
| 4604051 | Regenerative burner A burner for use in a heat regeneration system for a combustion furnace. The burner includes a burner shell having two internal chambers, wherein the first chamber is disposed on the flame axis of the burner, and the second chamber surrounds the radial pe... | 08/05/1986 |
| 4561843 | Transfer flue with means for improving the flow of gases A refractory brick is installed in a transfer flue with vertical orifices disposed between, on the one hand, the regenerators or recuperators and, on the other hand, the combustion chambers of industrial gas-fired systems, particularly a coke oven. The re... | 12/31/1985 |
| 4436508 | Ceramic burner for gas, particularly for a hot-blast stove for a blast furnace A ceramic burner for gas, for a combustion chamber of a hot-blast stove of a blast furnace, has parallel vertical supply ducts for the two combustion components (gas and air). A first one of said ducts opens upwardly at a first outlet which is substantial... | 03/13/1984 |
| 4435157 | Heat exchanger construction and method of operation A heat exchanger and especially a blast preheater (or cowper) for blast furnaces with refractory lining, insulating layer and steel jacket is described, the insulating layer of which is designed so that a steel jacket temperature of from 20° to 60° C. c... | 03/06/1984 |
| 4375956 | Hot blast stove arrangement for a blast furnace In a support construction for a hot blast main which is connected by respective branches to the outlets of a plurality of hot blast stoves of a blast furnace, the main is suspended on each stove by means of a rod system secured to a stiffened transitional... | 03/08/1983 |
| 4334861 | Method and apparatus for generating a hot air blast A system to supply high temperature blast air and a method for providing preheating of a cold air blast by gas-to-air heating in a tube-type heat exchanger with heat from waste products of combustion. Such combustion products are recovered in a header by ... | 06/15/1982 |
| 4322205 | Regenerative air heater A gas-cooled steel skirt is used to support a refractory cored brick matrix and dome structure in a high temperature regenerative air heater useful in magnetohydrodynamic power generation. The steel skirt thermally expands to accommodate the thermal expan... | 03/30/1982 |
| 4290751 | Blast furnace stove A hot blast stove for preheating combustion air for an associated blast furnace, having a continuous, substantially cylindrical shaped peripheral wall extending from a base to a domed cover. The peripheral wall includes a first cylindrical portion defined... | 09/22/1981 |
| 4253410 | Relief brickwork over opening in refractory brick wall A refractory brickwork wall having an opening therethrough has incorporated therein, at a position above the opening, a relief brickwork configuration in the form of a gable or roof. The relief brickwork includes a plurality of relief bricks each having a... | 03/03/1981 |
| 4169700 | Burner for a regenerative hot blast stove A burner for a regenerative hot blast stove has an upper block containing a burner tile portion having a plurality of burner ports and being inserted removably into the bottom of the hot blast stove; a lower section containing a combustion gas header and ... | 10/02/1979 |
| 4140482 | Device for the acoustic damping of a radiant-heating tube for an industrial furnace A fuel-fired radiant-heating tube for an industrial furnace is provided, at its fuel-feed end externally of the furnace, with an acoustic damper or muffler which comprises a double-wall housing defining two elongated annular flow passages in indirect heat... | 02/20/1979 |
| 4022572 | Hot-blast furnace with foamed silicate inner layer A hot-blast furnace of the type including an outer metal casing and an inner lining of insulating and refractory material has therebetween a layer of foamed glass or foamed silicate material having a structure of closed pores or small cells which are clos... | 05/10/1977 |
| 4003695 | Stove of blast furnace A stove comprises a metal jacket the inner surface of which has a gunite coating with a layer of metal or a heat-resistant synthetic material sprayed on the surface of said coating to form a continuous gastight cover. The gastight cover is superimposed by... | 01/18/1977 |
| 3966393 | Hot blast stove apparatus A hot blast stove apparatus comprising a hot blast stove having a discharge passage for hot blast gases, and a temperature equalizer material in the passage such that the hot blast gases discharged from the hot blast stove, gradually lowering in temperatu... | 06/29/1976 |
