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WO/2001/071049A2 |
A furnace system for recovering a non-ferrous metal from a charge of material. The furnace system (10) having a furnace chamber (12) having walls defining a refractory chamber, which receives the charge of material and the metal containe...
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WO/2001/068927A1 |
A continuous nickel matte converter and method for the efficient production of low iron nickel-rich mattes from high-iron nickel-rich mattes, with minimal environmental impact. The present invention processes high-iron, nickel-rich prima...
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WO/2001/057161A1 |
The invention relates to a method for the disposal and the utilization of waste products of any kind. According to the inventive method, industrial, household and/or hazardous wastes that contain unsorted, untreated, harmful substances o...
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WO/2001/057458A1 |
A modular furnace (10) is fabricated from at least one module (12) having a frame (14), a removable cover (18) mounted to the frame, exterior cover panels (20) on the frame, and an insulated case (32) fastened to the interior of the modu...
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WO/2001/046478A2 |
A smelting reduction apparatus which separates exhaust gas, which is exhausted from a melter-gasifier (40) or a fluidized bed reactor (10, 20, 30), into dusts and reducing gas to supply them to each fluidized bed reactor (10, 20, 30) res...
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WO/2001/038455A1 |
A retort (10) including a thermally insulated casing (12) defining a furnace chamber (14) therein; one or more columns (15) provided within said chamber (14), each column (15) comprising a plurality of vertically orientated, vertically s...
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WO/2001/038589A1 |
The invention relates to a method and device for pre-heating a charge for an electric arc furnace (EAF) (1). The reoxidation on pre-heating HBI and DRI in the EAF (1) is avoided, whereby the pre-heating of the charge is achieved by means...
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WO/2001/038588A1 |
The invention concerns a cupola for producing melt iron, comprising a vessel (2) for heating the materials to be smelted by burning combustion products inside the vessel (2), means (21) for loading the vessel with materials to be smelted...
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WO/2001/032293A1 |
An exhaust gas dust collecting device capable of highly maintaining a high dust collecting efficiency with compact equipment and less pressure loss and having a charging layer charged with solid particles as filtration medium, comprising...
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WO/2001/029495A1 |
A method of disposing of undesirable chemical compounds in waste dust (90) generated in a first kiln (84) in the manufacture of cement clinker by using the dust and slag (96) as the feedstock material to a second kiln (94), heating the f...
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WO/2001/027546A1 |
The invention relates to a device for burning gases, especially gases of shaft kilns for casting minerals. The inventive device comprises at least one combustion furnace. Gases of the shaft kiln are supplied to the combustion furnace whi...
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WO2000075588B1 |
The aim of the invention is to provide a means of also cooling the lower part of electric arc furnaces and/or resistance furnaces. To this end, said lower part - the actual melting vessel (4) - is surrounded with a jacket (9) at a certai...
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WO/2001/018261A1 |
The invention concerns an installation for controlling the sealed condition of water-gas heat exchangers equipping an industrial furnace (1), said furnace (1) comprising at least as assembly formed by means (9, 10, 11, 9', 10', 11') extr...
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WO/2001/018260A1 |
Gravitational type furnace for the direct reduction of mineral iron comprising a median reaction zone (14) in which the reactions to reduce the mineral iron occur, means (12, 13) to feed the mineral iron to said reaction zone (14), distr...
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WO2000040839B1 |
Method of Cogeneration of Heat and Power where turbine CHP set exhaust gases are used desentralised as oxidiser in local distributed heat needs. This invention concerns a new method of applying cogeneration of heat and power in cases whe...
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WO/2000/079012A1 |
The invention concerns a method for producing melt iron comprising the following steps: a) reducing the iron ore particles to form pre-reduced iron comprising excess free carbon; b) hot process transfer of the pre-reduced iron in a smelt...
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WO/2000/078482A1 |
Apparatus for processing ferrous material including a vessel (20) for receiving the molten ferrous material (22) and a removable cover for the vessel, the cover comprising an outer cover (40) which has an upper port and an inner ring (42...
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WO/2000/073724A1 |
The present invention relates to a method for cooling the gas flow exiting through the uptake of a smelting furnace such as a flash-smelting furnace with a finely dispersed liquid sprays, which prevents the solid matter particles contain...
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WO/2000/064832A1 |
Thermal electricity generating plants face a problem of disposal of fly ash generated by burning low grade coals. In the present invention, rapid cooling of clinker gives rise to glass phase clinker giving rise to a high class cement, ut...
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WO/2000/065102A1 |
The invention relates to a method and a device for melting down material containing metal, preferably finely particulate material containing metal, such as sponge iron, in a metallurgic melting furnace (1). The molten metal (5) and a lay...
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WO/2000/058678A1 |
Equipment (60) for surface transmission of infrared radiation, comprising a thermally insulated wall (62) forming a tunnel (63), in addition to a plurality of individual surface transmission devices (1) disposed in relation to and inside...
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WO/2000/055559A1 |
A rotary hearth furnace for reducing a feed material. The rotary hearth furnace (10) includes a rotating hearth (12) disposed in an enclosure and mounted for rotary movement. The enclosure includes an annular inner wall (14), an annular ...
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WO/2000/043720A1 |
Aspiration system to reduce the losses of fine materials and powders from an electric arc furnace (11) having a lower hearth (12) suitable to contain the bath of metal material being melted (13), a substantially cylindrical chamber (14) ...
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WO/2000/043719A1 |
System to plug the roof (10) of an electric arc furnace (11) having a main chamber or melting volume (25) arranged below the roof (10) and at least one electrode (15) introduced into the main chamber (25), the system comprising an upper ...
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WO/2000/031482A1 |
An apparatus (14) for separating molten Aluminium from a mixture of molten aluminium and aluminium dross includes a table (16, 54) for supporting an insulated crucible (59, 75) containing the mixture of aluminium and aluminium dross. Ele...
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WO/2000/023626A1 |
The invention is directed to water-cooled furnace hoods that exhaust gases away from a work area, and in particular, it is directed to an off-gas hood for use with a basic oxygen furnace (BOF). The furnace hood includes an assemblage of ...
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WO/2000/022176A1 |
A process and an apparatus for producing metals from a metalliferous feed material are disclosed. The process includes the steps of partially reducing and at least partially melting a metalliferous feed material in a pre-reduction/meltin...
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WO/2000/020650A1 |
The aim of the invention is to increase the productivity of a direct-current arc furnace for producing steel while decreasing the stresses incurred by the furnace. To this end, at least two electrodes (7a, b) which are inserted from abov...
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WO/2000/014286A1 |
The invention relates to a method for heat-treating recyclings containing oil and iron oxide in a multiple hearth furnace. Said oven has several superposed tiers. The recyclings containing oil and iron oxide are mixed with a solid reduci...
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WO/2000/012946A1 |
A moving hearth reducing furnace is operated, while a gap is provided between a discharging apparatus (1) for discharging reduced iron agglomerates from the moving hearth reducing furnace and the surface of the moving hearth (2). The gap...
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WO/2000/012444A1 |
A device and a method of bypassing a kiln exhaust gas, wherein part of an exhaust gas produced by the operation of a kiln (11) is bled through a probe (13), subjected to a primary cooling down to 400 to 600 °C after mixed with a cooling...
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WO/2000/003188A1 |
The present invention is directed to an indirect-fired, stationary tube (10), gas/solids or solids/solids, full ceramic pyroprocessing furnace-reactor (80) that uses heat-resistant conveyors (15) to propel solids through the stationary t...
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WO/1999/058260A1 |
An apparatus and a method for treating an object material containing a heavy metal and a noxious organic halide, and a method of treating soil. The treating apparatus is provided with an air-tight door (115b) and a retort (115c) as inter...
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WO/1999/042416A1 |
Sulfur oxides are removed from a preheater waste gas stream by reacting the sulfur oxides with lime recovered from the off gas stream in a calcining furnace. The method is adaptable for use in a cement manufacturing plant wherein the sul...
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WO/1999/042779A1 |
A seal for a high temperature treatment vessel, particularly those common to the steel industry, has a primary purpose to prevent gases from escaping the treatment vessel. The seal is provided by a positive gas pressure curtain barrier m...
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WO/1999/041560A1 |
Cooled roof for electric arc furnaces (20) or ladle furnaces (29), the roof being used as a covering element and including a cooling system comprising tubes fed with cooling fluid, the roof including at least a central aperture (25) for ...
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WO/1999/040236A1 |
A column packing and a column packing for use in the scrubbing of gases by aqueous liquid, the packing comprising material that is electrically conductive (1) and material that is non-conductive (2) with such materials being intimately m...
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WO/1999/028512A1 |
The invention concerns a method for reducing iron oxides and smelting iron, characterised in that it comprises at least two consecutive steps, namely: a first conventional step of reduction up to a degree of metallisation of the order of...
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WO/1999/023431A1 |
A fluidized bed gasification combustion furnace in which a gasification furnace and a combustion furnace are integrated with each other, and unburned char generated in the gasification furnace is burnt in the combustion furnace to use th...
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WO/1999/003794A1 |
A probe of a double pipe structure is connected to an exhaust gas passage of the kiln and a part of the exhaust gas from the kiln is extracted via the inner pipe of the probe, while a cooling gas is supplied to the fluid passage between ...
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WO/1998/053106A1 |
Loading system for electric arc furnaces (11) including at least a roof (11a) including at least a 'fourth hole' which can be connected to a conduit to discharge the fumes (22) associated at the end with an air-tight cover (23) to tempor...
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WO/1998/049355A1 |
A process is disclosed for recovering raw materials, in particular heavy metals such as chromium, by separation from waste and residues, wherein a liquid or viscous starting mixture and/or a starting mixture composed of crushed or ground...
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WO/1998/046345A1 |
Discharge system for a reactor, such as a furnace. The discharge system comprises a collection duct, to which a number of discharge lines are connected, each discharge line in turn being coupled to an installation, such as a furnace. In ...
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WO/1998/038344A1 |
First regenerators (3A-3C) which are in combustion exhaust gas exhaust passages, second regenerators (4A-4C) which are in suction/recovery passages for sucking and recovering N�2?, an atmospheric gas, are provided to three or more rege...
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WO/1998/027017A1 |
A recuperator for furnaces includes a set of tubes, which are installed in a secondary chamber (1) which is located behind a main combustion chamber of the furnace and through which hot fumes can pass from the main combustion chamber tow...
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WO/1998/021373A2 |
A process for reducing fume, dust and/or smoke emission in transferring molten metal, entailing: a) blanketing molten metal, preferably steel or iron with, at least, solid carbon dioxide; and b) allowing the carbon dioxide to sublime, th...
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WO/1998/009491A2 |
A method for processing an air stream using a thermal oxidizer (5), by pre-heating the air stream, without the use of auxiliary heat, and substantially eliminating the condensation of organic or inorganic compounds within the air stream ...
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WO/1997/044119A1 |
Regenerative thermal oxidizer in which a gas such as contaminated air is first passed through a hot heat-exchange bed and into a communicating high temperature oxidation (combustion) chamber, and then through a relatively cool second hea...
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WO/1997/036012A1 |
A process is disclosed for recovering and disposing of wet residues produced in cupola furnaces and the metals contained therein, the dust being captured by a filter device. The process is characterised in that the wet residue components...
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WO/1997/027441A1 |
A cassette regeneration system (10) for an oxy-fuel regeneration assembly (52) having oxy-fuel burners (54) includes a first regeneration assembly (62) having at least one removably connected cassette regenerator (32), a second regenerat...
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