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WO/1997/027336A1 |
Melt reduction equipment for directly producing a molten iron or a molten pig iron by adding a raw material of iron, a carbon material, and a flux to a furnace body and blowing pure oxygen and/or an oxygen-enriched gas into the furnace, ...
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WO/1997/024571A1 |
A gas flow furnace capable of generating a high-temperature strong circulating flow with low power comprises heat sources (3A and 3B) which heat a circulating gas outside the surface, and an out-of-furnace circulating passage (4) which t...
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WO/1997/016244A1 |
The invention relates to a method of returning a finely-divided solid (4) extracted at an extraction point of a reactor vessel (1) from said vessel using a gas to a feed-back point (16) of said vessel. The solid (4) is separated in a sol...
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WO/1997/012187A1 |
Vertical, small diameter cyclones (13) which are useful in the third stage separators of FCC units have a vortex containment cylinder (20) aligned with the body of the cyclone. The vortex of solids and some gas passes into the vortex con...
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WO/1996/041110A1 |
A heat exchanger for a regenerative thermal oxidizer (1) is described which includes at least one heat exchange column (5) provided with a bed of packing material (7) of specially shaped and sized particles, each particle being formed of...
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WO/1996/040373A1 |
A method and apparatus are disclosed for injecting vaporizable material, such as a vaporizable waste, into a molten bath. A gas is injected into the molten bath at a rate which is sufficient to cause the gas and the molten bath to form a...
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WO/1996/032616A1 |
The equipment reliability of a raw material retaining gate of a preheater is improved, the equipment cost is reduced, the effect of preheating the raw material by use of the waste gas is enhanced, and the melting electric power energy is...
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WO/1996/030709A1 |
An apparatus for highly efficiently preheating and melting scrap, which comprises a scrap melting furnace having arc heating means or a top-blowing lance, and a device for introducing an exhaust gas generated from the scrap melting furna...
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WO/1996/022394A1 |
A method for the co-production of fuel and iron from coal (11) and from iron ore (47) respectfully, which is comprised of heating the coal in the absence of oxygen to make a raw coal gas and a residual coke, and of increasing the content...
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WO/1996/021825A1 |
Waste material is burned in a furnace chamber (1). The oxygen-containing flue gases thus produced are drawn into a fluidized bed in a re-heating chamber (5) and undergo re-heating. Solids discharged with the flue gases from the re-heatin...
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WO/1996/021824A1 |
The waste material is degassed under the action of heat in a pyrolysis chamber (2). Volatile degassing products undergo post-combustion in a post-combustion chamber (4a, 4b or 4c) in the form of a fluidized bed reactor as oxygen is fed i...
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WO/1996/017089A1 |
In a process for producing sponge iron from particulate iron oxide-containing material, iron oxide-containing material is reduced to sponge iron with a reducing gas in a reduction zone (4) and gas produced during reduction is withdrawn a...
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WO/1996/000304A1 |
A direct reduction process is disclosed for iron oxide-containing materials. Synthesis gas is mixed with top gas produced during direct reduction of the iron oxide-containing materials and is used as reduction gas for directly reducing i...
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WO/1995/034793A2 |
A continuous furnace for baking ceramic moulded parts has a heating area (14), a baking area (16) and a cooling area (18). At least one smoke gas duct (22) extends from the heating area (14) into a combustion chamber (24) and at least on...
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WO/1995/033964A1 |
Dual electric/gas heating in a crucible melting furnace with segmental lining, and linings and segments of linings for same.
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WO/1995/023916A1 |
A two chamber regenerative thermal oxidizer (20) comprises an oxidizing chamber (22) and a pair of regenerator chambers (24 and 26). Inlet and outlet valves (44/46 and 48/50) control fluid flow to and from the regenerator chambers. A tra...
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WO/1995/023659A1 |
A furnace cleaning apparatus (50) for cleaning a cyclone furnace (20) with a fluid from a fluid source (268). The furnace cleaning apparatus (50) comprises a beam assembly (52) capable of being pivotally mounted to the cyclone furnace (2...
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WO/1995/017528A1 |
In steel-making there are conflicting processing requirements at different stages of the process. The method and apparatus of the invention creates different processing conditions at different stages of the process. Molten ferrous materi...
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WO/1994/024485A1 |
In order to thermally decompose gaseous initial substances, in particular toxic substances, shapphire is used as wall lining material for the reaction chamber. In a decomposition process, the initial substances (2) flow through a heated ...
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WO/1994/020791A1 |
A guiding flue (10) of refractory material is arranged at the exit of the slag exhaust hole (7) of a plasma fusion furnace (1) to guiding exhaust gas (5) in the downstream direction of the flowing slag. The slag which flows down by the s...
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WO/1994/019497A1 |
Method and apparatus for producing iron by melt reduction of concentrate or prereduced concentrate in a melt bath in a reactor, e.g. a converter (10). Concentrate and carbonaceous reducing agent are supplied to the melt bath consisting o...
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WO/1994/011691A1 |
The invention relates to a method and apparatus for cooling the exhaust gases of a molten stage furnace. The method relates to furnace structures in which the shaft (3) is vertical and the exhaust gases are passed through an outlet in th...
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WO/1994/007100A1 |
The present invention relates to an apparatus (1) efficiently producing brick (53). More specifically, the invention relates to an automated, ultra low profile, continuously moving dryer, kiln and brick handling system which provides eff...
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WO/1994/002792A2 |
The present invention is directed to a method and apparatus for controlling the kiln gas stream (90, 138) in a conventional long wet or dry process cement kiln (10). A portion of the kiln gas stream (90) can be withdrawn from the rotary ...
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WO/1993/025486A1 |
A method of operating an industrial furnace (1) comprising the steps of; (a) drawing a first gas flow (A) of ambient air into the furnace (1); (b) removing constituents of the first gas flow (A) to increase the relative oxygen content of...
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WO/1993/025361A1 |
A plant for producing bricks made of ceramic material has a device (12) for preparing the ceramic material with water and steam, a device (14) for pressing the bricks, a device (18) for drying the bricks and a device (34) for baking the ...
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WO/1993/020252A1 |
The invention concerns a method for the processing free-flowing materials, in particular filter dusts from the iron and steel industry and waste-incineration plants, as well as a device for carrying out the method. In order to ensure tha...
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WO/1993/018868A1 |
Process and device for the treatment of polluting molten meltable and electrically conducting materials consisting in feeding the waste materials into an induction furnace (11, 40) comprising an inductive circuit (1, 39), directly induct...
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WO/1993/017779A1 |
A process for purifying exhaust gases, especially from vacuum pyrolysis installations by means of the extraction of the exhaust gases and their combustion with a supply of air. Immediately after their formation, the exhaust gases are sub...
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WO/1993/014862A1 |
Fume-laden gases discharged from a metallurgical furnace are treated by being passed through a bed of coke and lime present in a reaction vessel. The bed is preferably heated and may be removed from the vessel for recycling to the furnace.
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WO/1993/013228A1 |
A process is disclosed for melting scrap, in particular from cars. The charge is introduced in pieces or batches by means of a charging tube (3) that extends through a closed lid (2). Electrodes (15) for heating the molten bath are excen...
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WO/1992/013108A1 |
The sample taking reed (7) mounted in a pipe for evacuating smoke coming particularly from a fusion or heat treatment furnace, is comprised of an extraction tube (8) extended in a closed sleeve (9) having an inlet (11) and an outlet (12)...
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WO/1992/001202A1 |
A method and apparatus for cooling the exhaust gases from a molten phase furnace, such as a smelting furnace (10). The exhaust gases are conveyed from the furnace to a vertically extending cooling shaft (24) disposed above the furnace, w...
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WO/1992/001074A1 |
The noxious fumes leaving the dry hearth chamber (112) of a metal recovery furnace (102) are fed to an incinerator (106) where they are burnt at high temperature with oxygen. The hot, clean exhaust gas is introduced to the bath chamber (...
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WO/1990/008842A1 |
A transport and drainage channel (14) is installed in at least one metal notch (11) of a metallurgical furnace (10). A transfer station (17, 18, 19) comprises a swivelling or tilting channel (28, 29, 30). The molten metal flows from the ...
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WO/1990/005586A1 |
A dry pulverized clay powder (1) is fed to a calciner (20) to be calcined therein. The clay powder feed (1) is passed through the calciner (20) in direct heat exchange contact with a hot gas (5) passing therethrough to heat the clay powd...
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WO/1989/008810A1 |
A method and an installation for recovering energy in the thermal destruction of pollutants in a gas emitted from a scrap preheating device (6, 8), e.g. in an electro-steel furnace (1). The polluted gas is conducted through regenerative ...
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WO/1989/002568A1 |
A method for drying solids, such as bark, peat, wet coal or the like by means of waste heat recovered from a rotary kiln (1). Solids are dried by simultaneously utilizing both the radiation heat of the shell surface (18) of the rotary ki...
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WO/1987/006331A1 |
Method and device for pre-heating waste metal for furnaces, flue gases generated in a furnace (1) being supplied simultaneously or sequentially to two pre-heating places (3, 4) with waste metal containers (14), said flue gases being made...
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WO/1987/004729A1 |
High-temperature dirty gas from an electric furnace (1) is directly introduced into scrap preheaters (5a, 5b, 5c), where scrap (6) to be charged into an electric steel-making furnace is preheated. If some portion of heat generated in the...
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WO/1987/003080A1 |
A regenerator (1) comprising a regenerative burner (2) having its own, independent combustion air supply (5) which directs air as a jet into a venturi of an eductor which is between the regenerative matrix (4) and the burner flue. A shut...
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WO/1986/003986A1 |
A method and an apparatus for separating solid particles from flue gases in a circulating fluidized bed reactor, in which method the flue gases are led to a cyclon separator (2), wherefrom separated solid particles are discharged and ret...
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WO/1986/001279A1 |
A method and apparatus for waste heat recovery and reduction in industrial furnaces and heating equipment. The method of heat recovery comprises directing the exhaust gases through a system of channels (8) inside the refractory wall wher...
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WO/1986/001230A1 |
Method and apparatus for the continuous making of steel in an electric steelmaking furnace (10), having a charge material preheater (18), continuous charging means (44) and means for removing refined steel (80) without removing the furna...
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WO/1986/000394A1 |
It is provided as shown in the drawing with a waste gas leading pipe, a linear pipe, an inserting pipe, a connecting pipe, a fixing pipe, a charging pipe, a gas discharge pipe and a branch pipe, and is adapted to preheat a main raw mater...
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WO1984002571A2 |
A solid fuel fired heating apparatus comprises a furnace (1) and a heat exchanger (4) to which exhaust gases from the furnace are passed. In order to increase the efficiency of the apparatus a particle separator (5) is interposed between...
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WO/1984/002571A1 |
A solid fuel fired heating apparatus comprises a furnace (1) and a heat exchanger (4) to which exhaust gases from the furnace are passed. In order to increase the efficiency of the apparatus a particle separator (5) is interposed between...
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WO/1984/000206A1 |
The disclosed method is intended to operate an industrial furnace (1) which is heated by recuperator burners (2) of which the exhaust gases are evacuated through steam injectors (6). The mixture of gas and steam issued from the injectors...
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WO/1983/003007A1 |
A device (10) for determining hydrogen flux through a metal membrane comprises two parts, top part (12) and a bottom part (11) respectively. The top part (12) is electrically insulated relative to the bottom part (11). The top part (2) w...
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WO/1983/002661A1 |
Furnace for preheating elongate materials, particularly rods, bars or the like of a light alloy, having a tunnel-shaped hearth (15) comprised of concave bed plates (14) wherein the material (1) to be preheated is introduced. At least on ...
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