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JPH1047860A |
To contrive the improvement of productivity by recovering the sensitive heat as well as the latent heat of exhaust gas from a furnace more efficiently. A dual type arc melting furnace, consisting of one set of power supply 2 and two sets...
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JPH1038476A |
To stably and sufficiently improve the preheating efficiency of scrap by feeding a charcoal material into a preheater mounted on the top of a melting furnace to introduce a gas containing oxygen. A shaft 21 communicating with the inside ...
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JPH1030887A |
To prevent the heat of an exhaust gas from being lost, and improve the pre-heating efficiency of scrap by a method wherein a shaft of a double structure, which constitutes the pre-heating device, is cooled by spraying in response to the ...
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JPH1026482A |
To improve the efficiency of preheating of scrap by regulating a charging position of the scrap in relation to the whole scrap so that an exhaust gas passage be ensured in preheating equipment, on the occasion when the scrap charged in t...
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JPH102673A |
To perform an efficient and continuous preheating of scraps, further reduce a melting energy origin unit when scraps are melted at a melting furnace and perform a more smooth preheating and feeding of scraps. In the case that scraps S of...
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JPH09318280A |
To prevent powder raw material from being accumulated on a horizontal plane of a raw material receiving member and enable powder raw material fed from a shoot onto the horizontal plane of the raw material receiving member to be uniformly...
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JP2690319B2 |
A cyclone for treating pulverous raw material suspended in a hot gas stream, for use, for example, in a suspension preheater plant for treating cement raw materials and similar materials, comprises a tubular chamber (1,12) with a vertica...
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JP2553118Y2 |
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JP2671936B2 |
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JP2550677Y2 |
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JPH09257378A |
To make metal scrap uniform and improve preheating efficiency by supplying power to an electrode inserted into another arc furnace before introduction of waste gas, and boring the metal scrap. When initially loaded metal scrap is melted ...
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JPH09243274A |
To enhance efficiency of preheating of metal scrap by separately feeding a sufficient amount of oxygen for burning carbon monoxide to each part of a preheating device to preheat metal scrap in the preheating device provided at a top port...
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JPH09243275A |
To enable effective and uniform heating of metal scrap by adjusting air flow rate according to temperature and flow rate of exhaust gas generated from a melting furnace having a scrap preheating device provided in a top portion of the fu...
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JP2650121B2 |
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JPH09227920A |
To restrain the sticking among scraps during heating and to improve heat efficiency by using wood as a void material in scrap packing layer, at the time of heating the iron scrap in a melting furnace of a preheating furnace. At the time ...
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JPH09217987A |
To increase the dissolution speed in a furnace of a continuously charged scrap and to completely eliminate a harmful material generated during preheating by a method wherein the tip of a scrap conveying device is positioned in the middle...
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JPH09202656A |
To improve the heat exchange efficiency of a high-temperature gas with a cement raw material and enable the reduction in power of an exhauster by providing a preheating device for the cement raw material capable of uniformly diffusing th...
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JP2623269B2 |
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JPH09159376A |
To permit preheating of scrap, received in a bucket, totally. The upper end unit of a bottom lid 10, having a divided structure, is positioned at the outer periphery of the lower end of a cylindrical unit 9 to attach it openably and perm...
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JP2621895B2 |
PCT No. PCT/SE87/00195 Sec. 371 Date Dec. 14, 1987 Sec. 102(e) Date Dec. 14, 1987 PCT Filed Apr. 15, 1987 PCT Pub. No. WO87/06331 PCT Pub. Date Oct. 22, 1987.This invention relates to a method and a device for pre-heating waste metal for...
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JPH09145255A |
To prevent a temperature of discharged gas from being decreased and to improve a pre-heating efficiency by a method wherein some refractory bricks of predetermined height are formed at a furnace bottom part, partition walls having a pred...
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JPH09138078A |
To reduce heat loss through a furnace wall and improve thermal efficiency by a method wherein a reserving vessel, emptied due to the charging of molten material into a furnace body, is removed and another reserving vessel, filled with th...
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JPH09133476A |
To clean a waste gas after having preheated scraps introduced from an arc furnace. One set of two regenerative heat exchangers 7A and 7B are mounted on a combustion tower 6. Branch waste gas ducts 8A and 8B of a waste gas duct 8 guided f...
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JPH09133477A |
To preheat scrap by waste gas from a furnace and save energy by providing a stopper freely movable back and forth horizontally at an upper location from receiving means of a storage container, the stopper serving to stop descending of sc...
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JP2603421B2 |
PURPOSE: To perform effective use of sensible heat of exhaust gas and energy conservation, to improve high temperature preheating of scrap material, steelmaking efficiency, to reduce a manufacturing cost, to decrease generated dust at th...
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JPH09105590A |
To reduce heat loss during the supply of a molten material molten by the heat of arc by forming the peripheral edge of the opening part of an arc furnace in the shape of a circular arc about the central axis of tilting of a furnace cagin...
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JPH0989470A |
To melt preheated raw material without transferring the raw material, easily implement melting operation, reduce thermal loss of the raw material, reduce melting time, contribute to saving of electric energy required for melting, effecti...
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JP2595590B2 |
PURPOSE: To deodorize an exhaust gas after preheating scraps under an energy- saving condition by controlling the supplying amount of fuel for combustion in accordance with the properties of the scraps and/or the exhaust gas at the time ...
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JPH0961064A |
To melt a scrap within a short period of time, provide a uniform steel melting temperature and uniform substances. In a DC arc furnace in which a furnace bottom electrode and one electrode rod 6 inserted into a furnace body through a fur...
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JPH0961066A |
To prevent discharged gas from being blown out of an upper end opening of a hanging bucket during loading of scrap and further to prevent an inner side of a factory from being polluted. In a furnace top installing type preheating device ...
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JPH0961065A |
To melt scrap within a short period of time and make a uniform steel melting temperature and uniform substances. In a DC arc furnace in which a furnace bottom electrode and one electrode rod 6 inserted into a furnace body through a furna...
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JPH0953890A |
To enhance a preheating efficiency of scraps by the exhaust gas produced in an arc furnace which melts metal scraps. In a top preheating device which causes an exhaust gas in an arc furnace 1 to flow through in a preheating chamber 11 wh...
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JPH0914865A |
PURPOSE: To provide a continuously charging scrap preheater for an electric furnace having no scrap fusion bond, excellent maintainability, durability, and high heating efficiency by exhaust gas and a method for preheating the same. CONS...
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JPH0914866A |
PURPOSE: To provide a scrap preheater for an electric furnace operation of preventing the fusion bonding of scrap by improving the durability of a rotary drum type preheating furnace and a method for preheating the same. CONSTITUTION: Th...
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JP2519020Y2 |
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JP2555868B2 |
PURPOSE: To execute a continuous heat treatment operation having excellent thermal efficiency without oxidizing a metallic material by constituting a heat treatment apparatus for metallic material with a front chamber having a specific s...
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JP2553771B2 |
A method and apparatus for heat treatment of lime mud comprises drying of the lime mud to be introduced into the lime reburning kiln (5) in a pneumatic dryer (3) by means of flue gases discharged from the lime reburning kiln in order to ...
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JPH08291325A |
PURPOSE: To recover Zn from steel scrap contg. Zn and to recover the steel scrap in a reusable state with good fuel efficiency by heating the steel scrap by using a first heating furnace and second heating furnace in and under a specific...
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JP2549622B2 |
PURPOSE:To strengthen mixing of gaseous O2 and material contg. C to raise combustibility and to shorten melting time for iron scrap, by providing a turning blade to a nozzle at top end of a flow path of gaseous O2 surrounding a flow path...
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JPH08269522A |
PURPOSE: To provide a method for preheating and melting steel scrap, by which the productivity is improved by the suppression of the wear of refractory in furnace, the reduction of the unit consumption of coal and the increase of seconda...
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JP2538158B2 |
PURPOSE: To make uniform the quality of product and to enhance production efficiency by reducing energy loss. CONSTITUTION: The heat treating and/or gas permeating unit for a granular substance 7 comprises a fire bed 1 for receiving the ...
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JPH08233474A |
PURPOSE: To efficiently use the heat of exhaust gas to preheat scrap and to effectively transfer the radiation heat from an arc to the scrap in a melting furnace used to melt metal material and to refine molten metal. CONSTITUTION: A met...
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JPH08233467A |
PURPOSE: To efficiently utilize heat of exhaust gas for preheating of scrap over a period from melting to temperature rise and effectively transmit radiation heat generated from arc to scrap without having scrap accumulated in lower port...
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JPH08233473A |
PURPOSE: To enhance the heat arriving efficiency of an arc to scrap in a melting period, and to raise the heat arriving efficiency from the gas generated from an arc furnace to the scrap by providing the specific relation between the hei...
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JP2533041B2 |
PURPOSE: To obtain a cyclone inner cylinder for a suspension preheater which is capable of releasing strains induced by temperature changes and being assembled easily without producing a turbulent flow in the stream of exhaust gas. CONST...
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JPH08215739A |
PURPOSE: To provide a billet heat treatment device which realizes the energy saving, the space saving and the cost saving. CONSTITUTION: The device is composed of a pre-heating furnace 4 which rapidly heats a billet to an intermediate te...
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JP2507065Y2 |
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JPH08200968A |
PURPOSE: To prevent the abnormal combustion and to preheat a melting material at a high temperature by supplying oxygen to incompletely burnt gas exhausted from a melting furnace to completely burn the gas, and further heating the exhaus...
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JPH08200969A |
PURPOSE: To eliminate the oxidation of a melting material even if the burning conditions of a burner are varied in the case of preheating the material. CONSTITUTION: The member 54 having higher oxidizing trend than that of a melting mate...
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JP2509397B2 |
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