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| Number | Title | Issue Date |
| 7195480 | Shaft preheater The invention relates to a shaft preheater for preheating material in lump form with at least one shaft for receiving the material, a bridge disposed in the shaft for delivering hot gases which flow through the material from the bottom upwards, and a device for fill... | 03/27/2007 |
| 7104465 | Water spray retort system suitable for paperboard packages A retort is described for use with paperboard containers (48) to reduce moisture absorption during processing of foodstuffs therein. The improvement includes using solid cone spray nozzles (50) with spray angles in the range of about 100 degrees to abo... | 09/12/2006 |
| 6948930 | Furnace head or furnace throat seal A blast furnace head (11) including a material loading device comprising rotary chute (14) driven in rotation about a first, vertical axis of rotation (16), and a loading chute (15) at the outlet of same, driven in rotation about a second... | 09/27/2005 |
| 6945775 | Method and apparatus for heating a slurry to a predetermined temperature The temperature of a metallurgical slurry in a heater vessel is accurately controlled by heating a first portion of the slurry in the heater vessel by contact with a heating medium such as steam, and by adding to the heater vessel controlled portions of a slurry at ... | 09/20/2005 |
| 6652272 | Device for sluicing a hot meal-form material In order to create a device like a shuttle sluice for sluicing or distributing a hot meal-form material flow, in particular for cement plant construction, whose shuttle valve or shuttle valves is or are easy and inexpensive to repair or renew in case of w... | 11/25/2003 |
| 6511629 | Shaft furnace The invention relates to a shaft furnace, in particular a direct-reduction shaft furnace, with a charge composed of particulate material, in particular a particulate material containing iron oxide and/or sponge iron, the said material being capable of bei... | 01/28/2003 |
| 6461154 | Method for burning carbonate-containing material In a method for burning carbonate-containing material the latter moves as a result of gravity in counter-current to the cooling and combustion air through a shaft kiln. The fuel supply takes place by means of burning lances introduced into the granular bu... | 10/08/2002 |
| 6358042 | Heating furnace A heating furnace is provided to use for medium and small size incinerator, to control air pollution effectively using waste heat generated from the incinerator and not to require large size equipment. The heating furnace includes a first opening for inse... | 03/19/2002 |
| 6280181 | Withdrawal device for a shaft furnace The invention relates to a shaft furnace (1), in particular a direct-reduction shaft furnace, having a bed (2) of lumpy material, in particular lumpy material containing iron oxide and/or iron sponge, having worm conveyors (3) which penetrate through the ... | 08/28/2001 |
| 6213762 | Shaft furnace The invention relates to a shaft furnace (1), particularly to a direct-reduction shaft furnace, with a bed (2) of lumpy material, particularly lumpy material containing iron oxide and/or sponge iron, with discharge devices (4) for lumpy material which are... | 04/10/2001 |
| 6209355 | Method for melting of glass batch materials An apparatus for melting materials is provided comprising a melter body having a batch injection portion including a batch inlet port, a batch melting portion including a batch melting chamber adapted to receive materials from said batch injection portion... | 04/03/2001 |
| 6132206 | Water cooled finger for pre-heater of furnace top A water cooled finger for a pre-heater of a furnace top holds metal materials of a required amount in a shaft installed at the furnace top for pre-heating metal materials by introducing exhaust gas at high temperature generated in the furnace into the sha... | 10/17/2000 |
| 6113387 | Method and apparatus for controlling kiln A regenerative shaft kiln having at least two vertical shafts and a plurality of lances for introducing fuel into the kiln, with one or more sensor provided proximate a plurality of the lances, each of the sensors producing a first output signal having a ... | 09/05/2000 |
| 5984671 | Sealing device useful for providing air-seal self-controlled discharge of product from a process equipment such as a vertical shaft kiln This invention relates to a sealing device useful for attachment to a process equipment such as vertical shaft kiln (VSK) for providing air-seal self-controlled discharge of product from the said equipment, which comprises a chamber (1) having at its top ... | 11/16/1999 |
| 5979191 | Method and apparatus for melting of glass batch materials An apparatus for melting materials is provided comprising a melter body having a batch injection portion including a batch inlet port, a batch melting portion including a batch melting chamber adapted to receive materials from said batch injection portion... | 11/09/1999 |
| 5938432 | Top closing device for shaft furnaces A top closing device for shaft furnaces, particularly blast furnaces, including an inlet hopper with inlet pipe, a rotating, vertically non-adjustable chute carrier with rotary drive, a pivotable chute in the furnace interior with external drive means, an... | 08/17/1999 |
| 5915959 | Method and apparatus for preheating particulate material A preheating apparatus for particulate material includes a plurality of vertical chambers, a temperature sensor within each chamber and a particulate discharge mechanism. Each chamber is segregated from an adjacent chamber by a vertical wall and includes ... | 06/29/1999 |
| 5829160 | Apparatus for generating heated air A heater for a grain bin is attached to the inlet flange of a centrifugal inline blower and comprises a housing having a vertical front wall attached to the inlet flange of the blower and a parallel vertical rear wall. The front wall has an opening aligne... | 11/03/1998 |
| 5829968 | Charging device for a shaft furnace A charging device for a shaft furnace with a lower bell comprises lower means of blockage allowing an upper hopper to be isolated in a sealed manner from a lower hopper and allowing the retention of the charging material. In their open position, these low... | 11/03/1998 |
| 5769627 | Vertical type calcination kiln A storage device 23 for storing a raw material to be calcined is provided at a position above a kiln cover 1, and the storage device 23 is connected to a preheating space 22 in such a manner as to be capable of dropwise supplying the raw material into the... | 06/23/1998 |
| 5738511 | Vertical shaft kiln This invention relates to a a vertical shaft kiln (VSK) useful for manufacturing cement and other allied products, which comprises a rotary nodule feeder for feeding the raw materials, fitted above the kiln bed for uniform distribution of nodules of the r... | 04/14/1998 |
| 5702246 | Shaft furnace for direct reduction of oxides A shaft furnace for reduction of oxides includes a shaft member having an oxide inlet and defining a pre-heating and pre-reducing zone downstream of the oxide inlet, a reducing zone downstream of the pre-heating and pre-reducing zone a transition zone dow... | 12/30/1997 |
| 5685709 | Apparatus for heat treatment of lime sludge Disclosed is a method and an apparatus for the heat treatment of lime sludge (CaCO3) to form burnt lime (CaO). In the method of the present invention lime sludge is dried in a gas dryer means, to produce a dried lime sludge. The dried lime slud... | 11/11/1997 |
| 5607297 | Moving bed process for carbothermally synthesizing nonoxide ceramic powders Carbothermally reduce a metal oxide to its corresponding metal nitride or metal carbide powder in a vertical gravity flow reactor by adding precursor pellets containing the metal oxide, a thermally decomposed binder material and carbon or a source of carb... | 03/04/1997 |
| 5595482 | Airlocking system and method for feeding bulk granular material A control measuring and supply apparatus and method for receiving a substantially, continuous flow of fluent material from a source of supply; the assembly having a bottom-sealed diverter plate, optionally positionable to direct the fluent material, by gr... | 01/21/1997 |
| 5588828 | Vertical bright annealing furnace for continuous heat treatment of metal strips A vertical bright-annealing furnace 1 for metal strips includes a muffle-type heating station 12, a refractory-type heating station 13. The refractory-type heating station 13 includes a shell 24 lined with a heat-insulating material 26 and a second heater... | 12/31/1996 |
| 5584934 | Method and apparatus for preventing distortion of horizontal quartz tube caused by high temperature The present invention relates to an improved equipment in semiconductor processing. The invention includes a horizontal quartz tube surrounded with heating element for processing wafers, an inlet pipe of a gas injector mounted at the center of the closed ... | 12/17/1996 |
| 5580241 | Multistage circulating fluidized bed A circulating fluidized bed thermal reactor such as a boiler or gasifier, having the riser divided into a sequence of stages by a plurality of restrictions which create multiple beds dynamically suspended. Circulation occurs below transport velocity, soli... | 12/03/1996 |
| 5556274 | Drying apparatus and method for pumpable materials A particulate material drying apparatus and method including a pulse combustor and an associated combustion chamber. Fuel and combustion air are introduced to the combustion chamber whereby the combination of the pulse combustor and combustion chamber gen... | 09/17/1996 |
| 5460517 | Shaft kiln for burning a lumpy mineral charge The kiln operating according to the parallel-flow-regenerative process has two shafts (2, 3), which at the transition from the burning zone (14) to the cooling zone (15) have a widening forming an inner step (38) at which the combustion gases are transfer... | 10/24/1995 |
| 5423676 | Waste melting furnace A waste melting furnace has a coke layer formed therein, and an annular combustion space formed circumferentially of the coke layer below an upper surface thereof and communicating with the coke layer. A depending wall projects downwardly from an upper po... | 06/13/1995 |
| 5312245 | Particulate trap for vertical furnace A contaminant trap for a high temperature, vertical furnace of the type used in semiconductor fabrication processing. The trap is designed to reduce particulate deposition within the process chamber, thereby decreasing the likelihood of by-product contami... | 05/17/1994 |
| 5166950 | Process and apparatus for melting a furnace charge Process for melting a furnace charge, with post-combustion of the smokes by njecting an oxygenated gas in the furnace atmosphere as a series of jets flowing according to a tangential component in the space between electrodes and cylindrical furnace partiti... | 11/24/1992 |
| 5108461 | Process for producing ceramic powders Conventional presintering and reaction presintering processes for the production of ceramic powders yield products exhibiting an undesired primary particle size distribution along with localized distribution of impurities, which give rise to the formulati... | 04/28/1992 |
| 4913649 | Repair of the refractory lining of the wall of a shaft furnace and a repaired shaft furnace In the repair of a refractory lining of a shaft furnace having a steel shell, a worn residual refractory lining inside the shell and cooling plates extending through the shell into the refractory lining, the worn lining is retained and an additional linin... | 04/03/1990 |
| 4852859 | Gastight bottom construction for a shaft furnace A bottom construction for a shaft furnace, has a plurality of horizontal layers of refractory material, and a gastight metal membrane located above at least the lowest layer of refractory material. So that the membrane is easily constructed, can accommoda... | 08/01/1989 |
| 4822229 | Installation for charging a shaft furnace An installation for charging a shaft furnace equipped with a distribution spout, several storage containers, a sluicing system and a valve cage is presented. The containers are arranged next to each other and are horizontally displaceable between a first ... | 04/18/1989 |
| 4810190 | Method and apparatus calcining mineral raw materials utilizing solid fuel Fine particulate solid fuel is utilized in the calcining or uniflow shaft of a uniflow regenerative shaft furnace having outlet openings of fuel lances of the furnace arranged with a uniform distribution over the cross-section of the furnace shaft in a ho... | 03/07/1989 |
| 4797092 | Cullet preheater A preheater for cullet is disclosed, in which hot gas coming from a hot supply duct can be passed through the cullet while yielding heat to the latter and can be carried away through a hot gas exhaust duct. The cullet is guided between guiding walls formi... | 01/10/1989 |
| 4797142 | Method of preparing a melt for the production of mineral wool Method of preparing a melt for the production of mineral wool wherein suitably composed raw material and coke are fed into a preheating zone in the upper portion of a shaft furnace and are caused to descend down through the oxidation zone in which air is ... | 01/10/1989 |
