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JP2000310554A |
To prevent moisture absorption and keep a transmissivity for microwaves by providing a container side face of a microwave transmission part with an opening part filled with a refractory, and coating an entire periph ery of the refractory...
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JP2000310492A |
To reduce physical unit of refractory, frequency of repair and operational trouble by decreasing the ventilation resistance at the bottom part of a shaft furnace thereby decreasing the push-out resistance of scrap. The preheating/melting...
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JP3106042B2 |
PURPOSE: To reduce carbon for heat-compensation and shorten the refining period of time. CONSTITUTION: In a burner system 4, combustion air supply and combustion gas exhaust are carried out through a heat accumulating element, so that co...
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JP3101900B2 |
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JP2000292075A |
To prevent melting of scrap in a preheating furnace by arranging a cooler at an input side of a shaft type preheating furnace in an inclined rotary kiln type scrap preheating furnace and the shaft type furnace at an upper portion of a sc...
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JP2000292064A |
To obtain a melting facility having a preheating chamber coupled directly with a melting chamber in which melting is performed stably at high efficiency by preventing a cold iron source from being suspended below the preheating chamber i...
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JP2000292074A |
To enhance combustibility of an exhaust gas by arranging an assist burner for burning combustible gas in the exhaust gas from a scrap melting furnace at a specific angle at a bottom of a rotary kiln type scrap preheating furnace in the s...
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JP2000281400A |
To provide a safe and efficient production system by providing a kiln chamber, a burner having a fuel inlet, an oxidizing agent inlet and an outlet and a clinker cooling device and fluid-likely communicating then with each other to impro...
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JP3092083B2 |
In order to preheat pieces of iron scrap of various sizes and shapes highly effectively while avoiding the fusion of the pieces of iron scrap, a rotary kiln type preheating furnace and a shaft type preheating furnace are arranged in para...
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JP3089437B2 |
PURPOSE: To provide a material retaining damper permitting the passage of waste gas, preheating and heating evenly material retained in the damper to a high temperature, in a preheating tower established in a smelting furnace. CONSTITUTI...
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JP2000234876A |
To provide a method for preheating scrap at 1200°C or above without causing a fusion and then melting the scrap. A scrap melting furnace 1 having an oxygen blow-up lance 2 and/or arc heating electrodes 3, 4 is concatenated in series wit...
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JP2000234114A |
To provide a method for preventing slopping and efficiently realizing scrap melting in a scrap melting furnace. In the method for melting the scrap and producing molten steel having ≤0.5% C concn. by using the scrap melting furnace hav...
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JP2000205751A |
To provide a continuous scrap feeder in which generation of dioxin is reduced as mush as possible by regulating the exhaust gas temperature at the recombination temperature thereof or above. A scrap carrier is disposed in the flue of an ...
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JP2000199689A |
To reduce energy required for thermal decomposition of exhaust gas after preheating of scrap by providing an outer tube for passing exhaust gas disposed at a lower part of a preheat tank with a burner and thermal decomposing preheated ex...
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JP3065598B1 |
[wrap up] [Task] Provided are a cooling wall of a high-temperature furnace and the like that can solve the problems related to the conventional cooling wall, including the fact that the structure of the means for supplying water to the c...
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JP2000171156A |
To make the elongation of a supporting arm for gripping an electrode unnecessary by a method wherein the electrode is elevated by an elevating device to a position whereat at least the electrode will not be collided against the furnace w...
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JP3054191B2 |
An apparatus and method are disclosed for processing glass-making materials under oxidizing conditions, and for processing materials, such as hazardous or toxic wastes, or smelting under reducing conditions. As a glass-making apparatus t...
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JP2000144241A |
To provide a method which has excellent productivity and little heat loss, related to a heating method in a continuous charging type heating furnace. A steel slab 1 is carried from a charging hole 2 toward an ejecting hole 3 in the heati...
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JP2000128592A |
To provide a cement firing equipment capable of being reasonably structured where heat recovery is performed with high efficiency by introducing a high temp. extraction gas from a kiln directly to a heat exchanger. This cement firing equ...
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JP2000111270A |
To melt a cold iron source with high efficiency which cannot be achieved by a conventional preheating method using exhaust gas.In a method for melting a cold iron source in an arc furnace 1, a melting chamber 2 and a shaft type preheat c...
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JP3032454B2 |
To drastically increase the using ratio of combustion energy of a carbonaceous material and the heat efficiency, and also, to prevent the oxidation of an electrode and the increase of iron oxide quantity in slag, at the time of melting i...
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JP3031877B2 |
To prevent steel scraps from adhering to each other through oxidation by preheating the scrap at a specified temperature while controlling the limit oxygen concentration representative of the oxygen concentration in a heated atmosphere t...
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JP2000074574A |
To suppress product unit requirement without lowering quality of a metal material such as billet or the like by directly heating the metal material to a temperature as high as possible by a combustion gas of a burner furnace without prod...
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JP2000065486A |
To provide a method for melting a cold iron source in an extremely high efficiency by preheating the source of next charge without particularly necessity of a unit for conveying to supply the source to a melting chamber, and also provide...
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JP2000046481A |
To alleviate manufacturing cost by facilitating tilting of a furnace body for tapping or the like and alleviating a load of an actuator necessary to tilt in an arc furnace with a furnace top preheater for melting metal scrap. In the arc ...
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JP2000500702A |
Waste (such as domestic garbage, industrial waste, and bulky refuse) or sewage sludge is pretreated by pyrolysis under an oxygen-poor atmosphere to provide solid pyrolysis residues and a pyrolysis gas. The solid pyrolysis residues are me...
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JP2000017319A |
To efficiently melt iron scrap and to reduce the consumption of electric power, at the time of melting the iron scrap together with molten iron in an arc furnace providing a preheating chamber directly connected with a melting chamber. I...
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JP2000008115A |
To obtain molten steel by melting a cold iron source, such as iron scrap and reduced iron, in extremely good efficiency. In the melting method of the cold iron source 11 in a melting furnace 1 by both of oxygen burner heating and arc hea...
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JPH11344287A |
To provide an operating method which can reduce an amount of power consumption and can easily adjust the carbon concentration in molten steel at the time of using carbon rich cold iron source such as direct reduction iron and cold pig ir...
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JP2990180B1 |
To prevent the oxidation of treated chips and to remarkably improve the yield by instantly vaporizing oil and moisture stuck to the chips with a barrel part for partial heating in a rotary kiln, cooling and discharging the treated chips....
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JP2984202B2 |
To preheat a material to be melted and feed the material into a melting furnace continuously without exposing the preheated material to fresh air. There are provided a melting furnace 1 that rotates around a substantiallhy horizontal axi...
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JPH11325746A |
To shorten time required for melting, by allowing a material insert pipe to be protruded while penetrating a ceiling of the other end part of a furnace body, and providing a door comprising an exhausting port at the upper end of the mate...
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JPH11323432A |
To provide a heating furnace device which can efficiently recover sensible heat hard to be recovered by a conventional means such as a recuperator and can efficiently transfer the sensible heat to a billet. The heating furnace device is ...
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JPH11325735A |
To provide a method and facility for melting a cold iron source with an extremely high efficiency that does not require any device for carrying and supplying the cold iron source to a dissolution chamber, can preheat the cold iron source...
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JPH11323350A |
To provide a plastic melt kiln which enables effective melt and cracking of a plastic with little energy consumption by making a large heat conduction area for a heat conduction surface with combustion gas, not only the wall of melt vess...
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JP2980481B2 |
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JPH11294969A |
To melt scarp with high thermal efficiency by introducing a part of exhaust gas on the outlet side of a rotary kiln to a preheating vessel when the heating value of exhaust gas from a melting furnace is higher than a specified level ther...
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JPH11294970A |
To obtain a low reheating device. A reheating device is provided with cyclones 20-24 being horizontally arranged, a plurality of connection ducts 25-28 that extend from the top part of each cyclone by required length downward and at the ...
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JPH11293351A |
To provide a preheating and melting method of scrap, with which dust having high zinc concn. developed at the time of preheating and melting the scrap containing the zinc can be separated and recovered. In an apparatus for preheating and...
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JPH11281264A |
To reduce fuel for melting an ingot by disposing a suction blower in an exhaust gas duct extending between a melting furnace exhaust opening for introducing exhaust gas from a melting furnace to a preheater and the suction opening of the...
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JPH11237191A |
To maintain a smooth flow of an exhaust gas discharged from a preheating device and the functions of a deodorizing tower, dust collector, etc., by catching small pieces of metallic scraps contained in the exhaust gas and, at the same tim...
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JPH11229024A |
To provide a scrap preheating-charging device, in which the preheated scrap can be charged at almost central part of a melting furnace without developing any trouble, even in the case of melting down a part of the scrap during preheating...
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JPH11223474A |
To ensure safety operation at high energy efficiency while suppressing contamination by providing a single number of chamber with a top section having a cold scrap inserting means, a bottom section having means for discharging heated scr...
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JPH11211365A |
To prevent small pieces a metallic scrap from entering between a socket and a jacket, by sealing off the socket and the shaft wall from each other by making the side periphery of the socket and the side periphery of the jacket slide on e...
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JP2930223B2 |
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JPH11201661A |
To prevent metal scrap in each duct from adhering and growing at the time of feeding or discharging by coupling exhaust ducts while facing a prehearting chamber defined by an openable finger in a shaft mounted on the top of a furnace and...
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JP2921380B2 |
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JP2921381B2 |
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JP2918111B1 |
[wrap up] [Task] The pressure loss is reduced while ensuring the dust collection efficiency of the cement raw material preheating device used by installing the cyclone in multiple stages, and the cyclone is made smaller and the height is...
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JPH11172309A |
To provide a smelting reduction apparatus, in which good fluidizing condition in a fluid is stably formed, a prescribed reduction capacity is obtd., the increase in dust loss is prevented and the control of supplying quantity into the sm...
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