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WO/1997/012997A1 |
A scrap melting method for producing hot metal by using scrap as an iron source, pulverized coal as a main heat source and/or as a high calorie exhaust gas source, and synthetic resins, which are wastes, as a high calorie exhaust gas sou...
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WO/1997/006394A1 |
A metal fusion furnace capable of controlling speeds, at which a metallic material is charged from a preheating section to a fusing section, within an optimum range, and efficiently fusing the metallic material only with oxygen burners, ...
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WO/1997/001615A1 |
The thermal radiation furnace, according to the present invention comprises the following main parts: a solids feeding system; a solids pre-heating system and at the same time a gas/vapor cooling system; a reactor for the thermal radiati...
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WO/1996/012612A1 |
A lime mud regeneration method and system of apparatus (26) which compacts lime mud into agglomerates of predetermined configurations for improved handling and processing in a subsequent compact, efficient, minimally polluting and low co...
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WO/1996/000798A1 |
The invention concerns a further embodiment of the nozzle system for an arrangement for melting iron metallic materials in a coke-heated cupola furnace in order to produce cast-iron as per main patent P 4301322.8. The invention is charac...
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WO/1995/033858A1 |
A loading device having a rotating chute for a melting furnace comprises a supporting structure (22) over the melting furnace (10), a mounting flange (18) rigidly secured thereto, a batch hopper (26, 28) supported by the supporting struc...
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WO/1995/018237A1 |
In taping for discharging molten metal (16) and slag (18) from a blast furnace, a pipe (30) is connected to the external end of a tap hole (12), and an electromagnetic energy supplying member (32) is disposed on the outside of this pipe ...
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WO/1995/014793A1 |
A device for loading a shaft furnace having a lower cone (20). The device includes lower sealing members (48, 60) for sealing off an upper hopper (34) from a lower hopper (14) and collecting a load material. When opened, said lower seali...
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WO/1995/013493A1 |
The invention pertains to a cooled gate valve disk (10) that has a cooling channel through which a coolant flows. Both sides of the gate valve disk are coated with a heat insulating material. This type of gate valve disk is problematic i...
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WO/1995/006139A1 |
The invention concerns a method for the disposal and re-use of sorted gas cylinders containing filling material, the method being characterized in that the degassed, open gas cylinders, together with the filling material they contain, ar...
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WO/1994/024060A1 |
A device for processing waste, particularly hospital waste, comprising a gasification chamber (1) into which waste is fed so that it can be degassed and burnt, a post-combustion chamber (2) for burning gas from the gasification chamber, ...
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WO/1994/021831A1 |
The invention pertains to a process for producing slag-forming briquettes to be used in smelting furnaces, in particular in cupolas or other shaft furnaces, wherein the briquette is made from industrially generated dusts or sands, partic...
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WO/1994/020642A1 |
A high-speed jet of liquid oxygen (21) with a speed higher than 100 meters per second is delivered into the tuyeres of a blast furnace or cupola furnace together with pulverised carbon. The jet reaches the opposite wall of the cavity (9)...
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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/1994/017352A1 |
A process characterized by low melting costs and a reduced environmental impact is disclosed, as well as an easy-to-operate device for melting iron metallurgy materials, in particular steel scrap, in a coke-fired cupola for producing cas...
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WO/1994/010348A1 |
A process and device are disclosed for melting scrap in a direct current-driven closed shaft furnace. The scrap is fed in a ring area at the furnace end, the hot gases which flow against the falling scrap are sucked below the scrap feedi...
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WO/1994/003029A1 |
An incinerator (10) for the disposal of biohazardous waste has a sealed enclosure (12) defining a combustion chamber (18) with upper, first and second level intermediate, and lower portions (19, 20, 21, 22). The upper chamber portion (19...
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WO/1993/024665A1 |
A method is disclosed for melting copper without incorporating unwanted oxygen and/or hydrogen into the copper by effectively controlling the burners (16) used to melt the copper within desired fuel/air ratio operating limits by employin...
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WO/1993/012396A1 |
A gas fired melting apparatus (20) for particulate material. The melting apparatus has four successively connected vertically disposed sidewall members (28, 30, 32, 34), a floor member (26) and a roof member (24). These members define a ...
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WO/1992/018268A1 |
Trap trench to catch molten metal and to drain cooling wear. The trap trench (1) has a drainage layer (5, 6) consisting of granulated slag in which the grains of the said slag are bonded together by a binder while retaining small channel...
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WO/1992/015537A1 |
A mud that provides a work environment improvement as the characteristics of a resinous mud for the tap hole of a blast furnace, improves the adhesiveness with a mud piled in the furnace at high temperature as a shortcoming and can incre...
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WO/1992/004587A1 |
The conventional operation of a cokeless cupola furnace has a requirement for a low volume of slag to be produced, because of the fact that there is no ash from coke to remove from the charge, and the fact that flux added to the charge t...
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WO/1991/014005A1 |
A process and a smelt reduction vessel (1) for producing metals and metal alloys, in particular iron and iron alloys, from metal oxides and ores in a smelt reduction vessel. The process and the vessel are characterised in that loss of li...
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WO/1991/002095A1 |
An arrangement is useful for introducing waste material into a molten slag produced in a cupola. The waste material is introduced into the slag in at least one reaction vessel arranged outside the cupola between the slag overflow and a s...
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WO/1990/015296A1 |
Calcium carbide production furnace, in which low quality lime material and carbon stock of low strength are charged homogeneously and continuously or intermittently, oxygen is blasted through water-cooled copper nozzle arranged symmetric...
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WO/1990/014318A1 |
The method of roasting provides for taking-off the heat carrier from the beginning of the cooling zone at the ignition stage of the process and feeding it to the layer of the material to be treated at an angle of 90-180° to the directio...
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WO/1990/014568A1 |
The invention relates to a process and device for smelting in cupola furnaces run without coke. According to the invention, substances are injected into the space between the smelting grate (4) and the burners (7) located below it which ...
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WO/1990/013781A1 |
A vacuum induction furnace comprises, coaxially mounted in a vacuum chamber (1), a crucible (3), a metal bottom plate (5) located in the lower part of the crucible (3), and an inductor (4) embracing the crucible (3). The crucible (3) con...
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WO/1990/002104A1 |
A new process for calcining rocks containing calcium carbonate, in particular lumps of limestone, to hard-burned lime of a given degree of burn comprises the following steps: removal of waste gas, cleaning, cooling and recompression of t...
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WO/1989/004445A1 |
In a system (3) for conveying bulk materials (11) form the first container (2) into a second container arranged below the latter, the two containers being connected by a conveyor channel (10), a first slide and a second slide arranged do...
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WO/1988/008411A1 |
The invention relates to a furnace for producing a melt for mineral wool production comprising a shaft (2) for preheating and melting of the raw material (6); a water-cooled grate (5) disposed in the bottom portion of the shaft, which su...
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WO/1988/007163A1 |
Oven for dehydrating pulverulents, sand or granules, comprising an energy-saving dehydration device, adapted to gypsum burning. The device consists of an outer casing (1), an inner casing (6) and flow cones (7 and 10) disposed on said ca...
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WO/1988/005149A1 |
A process and device for introducing additives, in particular energy carriers, into a cupola or shaft furnace. The additive is carried with the combustion air stream and introduced therewith in the furnace shaft, a depression being creat...
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WO/1988/002838A1 |
Apparatus for producing ferrous or non-ferrous metals from self-fluxing or not, self-reducing agglomerates or ores, being a shaft furnace, comprising a cylindrical or conical shaft (1), having, at the top portion thereof, a loading gate ...
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WO/1988/002465A1 |
A shaft kiln installation is used to burn pellets of solid materials containing volatile and/or solid fuels, and at the same time to calcinate minerals. For this purpose, the installation uses in the heating, degassing (1,04) and combust...
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WO/1988/000322A1 |
The refractory lining of e.g. a runner channel eroded by contact with molten metal is speedily repaired by milling the lining to break up residues and removing the milled off pieces and dust. The residues on the floor are first loosened ...
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WO/1987/007705A1 |
Method and equipment for continuous feeding of melt furnaces with the supply in separate phases of metal charge, fuel, air and/or metallurgical metal materials, and the possibility of using different types of fuel, changing the coke bed ...
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WO/1987/006926A1 |
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 zon...
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WO/1987/005634A1 |
A process for the reduction of iron ores with the simultaneous production of synthesis gases or combustion gases consists in injecting a quantity of oxygen into ferro-coke and/or low-temperature carbonization iron briquettes in an upper ...
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WO/1987/003010A1 |
A furnace (10) and process for recovery of zinc from sulphide materials in which zinc sulphide material together with an oxidizing gas is introduced by lance (20) into a first (17) of two laterally adjacent zones (17, 18) formed by a gas...
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WO/1986/005520A1 |
A method of ironmaking by means a smelting shaft furnace including the steps of supplying iron ore and coke to the top of the furnace; and injecting coal and oxygen into the smelting zone of the furnace to promote combustion, to control ...
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WO/1986/002436A1 |
To reduce the amount of coolant needed relative to a pressurized furnace cooling system a spray cooling system for the sidewalls and/or roof of a furnace is provided. In the invention, spray headers and pipes (14, 16 and 18) supply coola...
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WO/1986/000978A1 |
Equipment intended to the remaking and repairing of high furnaces (1) comprising a rotating feed launder (7). The equipment comprises a telescopic projection length (21) which is controlled and mounted on the rotating feed launder (7) an...
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WO/1985/004467A1 |
In the process for the thermal and/or chemical treatment of grained, granular or lump material in plane heaps, the latter are transported with free intervals, in stages, from top to bottom through a shaft and are traversed by gases. The ...
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WO/1985/004469A1 |
Shaft arrangement for thermal and/or material transfert processes between a gas and a flowing bulk material, wherein the shaft is divided by grates (2) into chambers (3) which are partly filled with plane heaps (4) of material. In the wa...
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WO/1985/004163A1 |
Method for burning and sintering lump material, such as limestone, dolomite and the like, in a gaz-, oil- or coal dust-heated shaft oven (6), wherein the material traverses successively a preheating area, a burning area and a cooling are...
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WO/1985/003525A1 |
A slag trough (2N) for removing molten shaft furnace slag isolated from melted iron by a skimmer (3) is provided upstream from the skimmer (3) mounted in midway on a molten iron trough (1), and at least two partition walls (4a, 4b, 4c) a...
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WO/1985/003524A1 |
At least one lance is disposed substantially vertically so that the lower end of molten iron of a shaft furnace is isolated from the surface of molten iron flowing through a melted iron trough at a predetermined interval above the trough...
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WO/1983/004266A1 |
The cooler comprises cooling tubes (1), arranged in a frame (8) with a gap extending therebetween, and connected to each other with sheet straps (3). In order to reduce thermal tensions without a loss of structural strength, the edge por...
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WO/1983/001790A1 |
The device for cooling a wall of a shaft furnace comprises packets, mounted along the wall and fixed on a shell (9) thereof, which packets have cooling tubes (3) and refractory insertions (6) placed between said tubes (3). Each of the pa...
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