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JP3365557B2 |
The process for melting oxidic slags and combustion residues having a minimum content of metallized portions such as, e.g., iron and/or carbon carriers, of 3% by weight is carried out in a shaft furnace directly heated by means of fossil...
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JP3365912B2 |
To provide a device excellent in durability and safety, at the time of providing an impulse wave generating device in a measuring instrument in a furnace, for temp. in the furnace. This device has a constitution composed of a fixed unit ...
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JP3364245B2 |
PURPOSE: To improve the dust collection efficiency around a molten iron tapping hole and to enable the sufficient dust collection while reducing blasting quantity for dust collection. CONSTITUTION: In the dust collector around the molten...
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JP2002544374A |
A blast tuyere for shaft furnaces, includes a conical hollow main body having inner and outer casings defining a hollow space and interconnected by a tuyere nose. The outer casing is formed by a single-piece base body terminating smoothl...
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JP3357360B2 |
The invention is concerned with a process for producing metals and metal alloys, in particular iron and iron alloys. Starting materials are metal oxides and/or ores in a smelt reduction vessel containing molten metal. The waste gases for...
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JP2002357310A |
To provide a waste melting furnace and a sub-tuyere with which the melting furnace is provided, and a method to utilize a tuyere cooling heat which enables improvement of thermal efficiency by effectively utilizing heat discharged along ...
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JP2002357386A |
To provide a method of melting aluminum by which the production of aluminum can be increased easily as necessary by using an already existing aluminum melting furnace. A fuel supply path (4) and a combustion air supply path (7) are conne...
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JP2002349818A |
To dissolve the difference in vent resistance in the cross-sectional direction of a carbonization residual in an early stage before it becomes large by directly measuring the temperature in the vicinity of a location where the difference...
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JP3347462B2 |
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JP3346197B2 |
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JP2002303412A |
To provide a method for gasifying and melting a waste, capable of maintaining fluidity of a deposit layer in a good state while maintaining a molten state of ash or the like in a lower part of a furnace body in a good state and maintaini...
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JP2002295817A |
To solve the problems of equipment as a whole requiring high construction cost and the operation and maintenance of the equipment requiring much labor and skill due to complicated treatment flow in a kiln method and a fluidized bed metho...
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JP2002295823A |
To provide a burner type ash melting furnace capable of supplying a finely powdered combustible substance to a burner through air for transportation successively, without heating the air for transportation.There are provided an ash melti...
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JP3330575B2 |
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JP2002267144A |
To provide a method of discharging molten slag from a waste fusing furnace and a molten matter discharge structure which enable stable long-term continuous operation without slag and metal solidifying and blocking in a communication port...
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JP2002256314A |
To prevent the development of crack in a rubber caused by local tension stress acting to the seal rubber.An upward widening annular groove 40 is formed at the seal surface side of the peripheral part in a valve body 26, and in the annula...
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JP2002249784A |
To provide an apparatus for converting a waste plastic into an oil, capable of reducing the amount of the residue after thermal decomposition, and having good heat efficiency.This apparatus 1 for converting the waste plastic into the oil...
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JP2002221305A |
To provide an incinerator that can be improved in maintainability by simplifying its internal structure.This incinerator 11 is provided with heat-resistant bricks 15 lining the lower parts of furnace walls 13 and the bottom 12 of the inc...
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JP3309586B2 |
PURPOSE: To independently control the temperature control of a free board and stabilizing of melting and fluidizing. CONSTITUTION: This waste gasification melting furnace comprises a waste and a carbon auxiliary fuel charge port 5 at the...
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JP3305492B2 |
PURPOSE: To efficiently operate a melting furnace without maintenance by providing fuel nozzles at the bottoms of two aligned material charging towers coupled at the bottoms and supply and exhaust units having switching valves at tops, s...
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JP2002521563A |
The invention relates to a method for producing zinc using the IS process in an IS shaft furnace and to an IS shaft furnace for carrying out said method. To be able to utilize dust containing zinc in a simple manner the invention provide...
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JP3298942B2 |
PURPOSE: To operate a furnace in the stable furnace condition by controlling the size of a raceway in an upper step tuyere, at the time of producing molten iron, etc., in the vertical type coke packing furnace providing the upper and the...
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JP2002187710A |
To provide a granular object heat treatment furnace capable of continuously graphitizing at reduced running and production cost.The granular object heat treatment furnace is constituted so that a plurality of electrodes for heating a cyl...
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JP3295011B2 |
To suppress energy consumption by efficiently discharging molten metal. The melting furnace apparatus comprises a holding furnace body 2 for burning gas such as natural gas to hold molten metal Y at a predetermined temperature, a melting...
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JP2002162169A |
To improve fixing of a heater principally comprising MoSi2 and the structure of a furnace and to facilitate maintenance/inspection of the heater or the furnace wall or replacement of a damaged heat insulating furnace wall (unit) includin...
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JP3286287B2 |
To provide a pusher apparatus for use in a shaft type heat decomposing and fusing operation furnace, which apparatus can prevent troubles caused by one-sided and/or bridged garbage, as well as a blow-by hole formed in a cluster of the ga...
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JP2002147959A |
To extend a continuous operation time of a cupola as much as possible in the water cooling zone of a cupola and the structure of a furnace bed.The inner bottom surface (a lower end edge W of the water- cooled zone of a cupola) of a cooli...
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JP2002130632A |
To provide an operation method of a waste gasifying melting furnace that ensures a stabilized operation, and the extended range of a processing amount of waste, and hence is easily operated irrespective of skills.When a dome-shaped melti...
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JP3275919B2 |
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JP2002115828A |
To provide a waste melting furnace, in which discharge of molten slag can be accelerated from a tapping hole of the furnace, time for gas emission from the tapping hole is shortened, and environmental dust-collection equipment around the...
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JP2002115827A |
To provide a small waste-melting furnace provided with exhaust-gas treatment equipment, which has an improved efficiency of dust removal from exhaust gas of the fuel.Waste is charged from the top of the furnace, air or oxygen- enriched a...
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JP2002115832A |
To provide a waste melting furnace, in which channeling of gas ascending in the furnace is prevented, dust-removing efficiency is improved, and dust- making is reduced.Waste is charged from the furnace top, and air or oxygen- enriched ai...
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JP2002511906A |
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 ...
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JP3274089B2 |
To carry out heat treatment of a large-sized article safely and surely. A heat treatment apparatus is provided with hot plates 2 vertically arranged in four steps in a heat treatment chamber 1, hot air heated by a heater 52 is supplied a...
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JP2002106818A |
To provide a waste melting furnace, in which gas in the furnace can ascent uniformly, the refuse is uniformly heated from the surrounding, and the thermal efficiency can be improved.In the furnace, waste is charged from the furnace top, ...
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JP2002098312A |
To provide a method in terms of energy and environmental pollution in which gas in a furnace is taken out as it is, and the amount of particles of soot is reduced.Although a waste is thrown in from an upper portion of a furnace, and is r...
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JP2002090065A |
To provide a cupola capable of reducing an exhaust amount of a carbonic acid gas.A city gas containing less carbonic acid gas than that of a coke per unit heating amount is used as an auxiliary fuel. This city gas is injected from a dist...
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JP2002081625A |
To solve the problem in the conventional art that a bridging phenomenon tends to generate in a shaft gasification-melting furnace, when the temperature drops in the upper part of a refuse dump, resins and the like contained in the dump a...
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JP2002081623A |
To obtain a small sized pyrolytic gasification melting furnace for waste, in which an operation control is easy, troubles in operation caused by tar and ash content are precluded, and harmful substances are not generated.This furnace is ...
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JP3263928B2 |
PURPOSE: To enable use of powdery iron scrap and to produce molten pig iron excellent in the quality in good electric power efficiency by piling lumpy cokes as heating medium at the bottom part and using a cylindrical type melting furnac...
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JP2002061816A |
To provide a waste gasifying melting furnace capable of securing the uniform flow of gas preventing drift by adding equipment of a simple structure and a low cost, of which operation and maintenance are easy, and stabilizing the flow cap...
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JP2002060254A |
To provide a lime kiln capable of producing a high quality quicklime product with high heat efficiency while securing high CO2 concentration in the exhaust gas.This lime kiln is provided with a plurality of shafts each having a preheatin...
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JP2002048322A |
To provide a melting processing method and a melting processing furnace for waste in which upon directly melting waste the processing cost is reduced.Air that is rich in air or oxygen from tuyeres 3, 4 at a single stage or a plurality of...
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JP3253250B2 |
To permit the arrangement of a cooling device for a rectangular non-ferrous material refining furnace so as to wrap the corner of the same from both surfaces of the corner part by a method wherein the cooling surfaces are configured so a...
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JP2002031482A |
To simply, easily and efficiently conduct repairing of a refractory in a small-sized cupola from outside.In the small-sized cupola, comprising refractories 4 adhered to an interior and a melting capability of substantially 5 t/hr or lowe...
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JP2002012478A |
To provide a slip casting material by which a main conduit, especially its metal part, of a blast furnace is prevented from wear and tear by a hot- metal and a hot-slag, and its lifetime is extended.Melting loss and elastic modulus are d...
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JP2002003917A |
To provide an oxygen supplying method with which the heat energy can effectively be utilized by improving a secondary combustion ratio when iron scrap is melted in a vertical melting furnace.The oxygen for primary combustion is supplied ...
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JP2002003916A |
To provide a cooling plate having excellent cooling activity and high efficiency and used for improved lining of a metallurgical furnace, and a manufacturing method of the cooling plate having cooling piping at low cost.In the cooling pl...
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JP2001355966A |
To make an operation stable and high efficiency and further improve quality of slag-metal upon melting/reducing processing for metal sludge.Before metal sludge is blown into a melting/reducing furnace, part of the metal sludge after it i...
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JP3236215B2 |
To provide a furnace for heating a glass rod to be used in a device for drawing an optical fiber from a glass preform, which has excellent stability in high temperature action and reduce grain contamination of the fiber by providing a sp...
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