• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This invention relates to electric smelting furnaces for continuous smelting of spun fine or granular substances. The purpose of the invention is to ensure uniform melt production per unit of time. The electric smelting furnace 2 for continuous melting of spun mineral materials 1 with furnaces metal acceptors 4 lined with refractory material and several electrodes 8 arranged along an arc of a circle 8 that are inserted from above into the internal chamber 9 of the furnace, has conveying devices 18 for feeding the fused materials 1 from above and along at least one side discharge device 14. For ensuring high productivity of the electric melting furnace 2 and uniform melt discharge, transporting devices 18 are formed from several metering tubes 16, which are located near the arc of a circle between two adjacent electrodes 8. The metering tubes 16 are loaded with conveying devices 18, and with full metering tubes 16, the subsequent supply of the alloyed materials 1 is stopped. The feed openings are located directly above the metering pipes 16, and the discharge device 14 includes a drain pipe consisting of two butted pipes forming a threshold at the junction located below the upper part of the outlet opening. The furnace is provided with a vent pipe located above the drain pipe. On the sides of the metering tubes facing the electrodes from the lower end vertically upwards are made notches. 2 hp f-ly, 8 ill.
    公开号:SU1473723A3
    申请号:SU853952985
    申请日:1985-09-17
    公开日:1989-04-15
    发明作者:Энкнер Бернхард；Амон Леопольд；Кюбельбек Альфред；Тримель Вольфганг；Налепка Пауль；Шропп Леопольд；Швангхофер Хельмут；Пум Райнхард；Тракслер Манфред；Таш Франц
    申请人:Фоест-Альпине Аг (Фирма)；
    IPC主号:
    专利说明:

    one
    This invention relates to an electric smelting furnace for continuous smelting of spinning finely ground or granular substances.
    The aim of the invention is to ensure uniform melt discharge per unit of time.
    Figure 1 shows the electric furnace, vertical section; figure 2 - metering pipes with grooves; in FIG. 3, view A in FIG. 2; figure 4 - section bb in figure 1; on fig.Z - section bb In figure 1; figure 6 - transporting device in the form of a vibrating trough; figure 7 - node I in figure 1; on fig.Z - type D on Fig.7.
    Designed for smelting spun mineral fine-grained or granular materials 1, the electric melting furnace 2 has a jacket lined inside with refractory material 3, a metal reservoir 4 of the furnace cover 5. Through the lid, three axes 6 located along its axis 7 along the arc 7 - renna chamber 9 of the furnace. Each of the electrodes by means of its own lifting and lowering mechanism 10 can be moved in the vertical direction in order to adjust a certain depth to the melt 1 1. At a slight height of 1.2 above the bottom 13 of the metal receiver 4, an outlet device 14 is provided,
    which is adjacent to the side wall 15 of the metal reservoir 4 of the furnace.
    Through the cover 5, the metering tubes 16 are passed into the inner chamber 9 of the furnace in the vicinity of a circle formed by the electrodes 8 of the arc 7 with the arrangement of tubes between the electrodes. Finely ground or granular materials 1 to be loaded are fed from the storage tank 7 located above the furnace through an appropriate transport device 18 to the corresponding metering pipe 16. The melt flowing through the discharge device 14 flows through a drainage tray 19 to a spinning device (not shown). In order to evenly supply the loaded finely divided or granular materials 1, the transporting devices 18 are made in the form of vibrating chutes 20, which extend from the discharge opening 21 to the upper opening 22 of vertically arranged pipes 16. The vibrating chutes 20 are constantly in operation and transport the finely divided or granular materials 1 until the transport openings 23 of the vibrating troughs 20 are closed in the upper opening 22 accumulating in the form of a bulk cone 24 of loading material pom (6). In this case, the transport by the vibration chutes automatically stops,
    hot vibratory gutters still work. As soon as the feed material 1 passes through the metering tubes 16 into the inner chamber 9 of the furnace and the holes 23 of the vibrating troughs -20 are released, the vibratory troughs 20 automatically begin transporting the loaded material to facilitate cleaning of this part 29 of the pipe, with possible freezing of the material.
    Above the discharge pipe, a rising vent pipe 37 passes through the cooled hollow space 36 of the drainage device from the inner to the outer wall of the furnace, which also in order to facilitate its cleaning
    1 to the metering pipes 16, with the STOMJQ stack being made expanding towards the inner chamber 9 of the furnace. The vent tube 37 terminates in the melting zone 38, and is designed so that the gases 39 forming in this zone, which adversely affect the uniformity of the melt, can also be removed from the inner chamber 9 of the furnace.
    the last ones are constantly loaded.
    The finely crushed or granular materials 1 supplied through the metering pipes 16 into the inner chamber form a cone 25 in the chamber, the height of which reaches the lower holes 26 of the pipes 16. Vertical recesses 27 are made in the walls of the metering pipes 16, which face the adjacent electrodes 8. Thanks to the notches 27, more material to be melted 1 goes to the zones of the electrodes 8. Outlines of the bulk cones are shown by lines 28 (Figures 2-4). Due to the fact that more materials to be smelted 1 get to the electrodes 8 than in the normal design of the lower holes 26 of the metering tubes, the electrodes 8 are better protected and more materials 1 are melted directly around the electrodes 8.
    To ensure uniform melt flow per unit of time from the discharge device 14, the latter is formed as a water cooled drain pipe passing through the side wall 15 of the electric melting furnace, which has an ascending 29 and a descending 30 parts. Both parts 29 and 30 of the pipe at the point of their connection form a threshold 31, which at a distance of 32 is below the upper part of the outlet 33 on the inner wall of the furnace with the formation of a free passage 34. Due to this design of the discharge device, the melted melt is not removed from the surface 35 of the liquid parts melted
    Va 11, and c below the higher temperature level of this liquid portion, with no lifting effect. For this reason, the melt is evenly merged as soon as the surface 35 of the melt reaches the level of the overflow edge.
    In terms of plan, the pipe raising portion 29 at the inner wall of the furnace is made expanding so that
    Q stacks are extended to $ 0 5 0
    five
    0
    five
    0
    board to the inner chamber 9 of the furnace. The vent tube 37 ends in the melting zone 38, and is designed so that the gases 39 formed in this zone, which adversely affect the uniformity of the melt, are removed from the inner chamber 9 of the furnace.
    Gas formation occurs due to the reaction of iron oxides with carbon to form carbon monoxide. The small amount of gas produced in various places affects the surface 35 of the melt in the immediate vicinity of the discharge device 14 and the uniformity of the melt draining.
    Below the exhaust device 14, an emergency drain 39 is provided, which is used, for example, when replacing the exhaust device 14. With it, the level of the melt surface 35 is so lowered that the exhaust device 14 can be replaced without disturbing the operation of the furnace. Emergency drainage device is made similar to the exhaust device, i.e. it is also cooled with water and displaced with respect to the exhaust device 14 by about a quarter of the circumference of the electric melting furnace 2. It is locked by means of a steel stopper, as a result of which the emergency drain is simply locked and opened.
    To ensure high melting performance, the electric smelting furnace is designed as a three-phase furnace powered by alternating current. Heat is generated according to Ohm’s law, and the load materials 1 are ohmic resistance. Such an electric smelting furnace is suitable for smelting blast-furnace slags which, if necessary, can be mixed with sand, glass or fly ash, as well as for smelting minerals such as diabass, granite, porphyrite. Optimal grain10
    51473723
    dst materials 2-30 mm. The immersion depth of the electrodes is controlled to ensure constant performance, and the electrodes 8 are controlled separately.
    The electric melting furnace has a drainage device 40 in the bottom of the furnace, designed to unload the electric melting furnace.
    权利要求:
    Claims (3)
    [1]
    Claims 1. An electric smelting furnace for continuous smelting of direct mineral highly dispersed or granular substances, comprising a jacket lined inside with refractory material, electrodes passing through the arch of the refractory material, metering tubes located between the electrodes, loading devices installed above the dosing pipes, at least one outlet opening 25 in the side wall of the furnace, and an outlet device that is nominally loaded into a load of two different versions n pipes
    2 from the supply position
    3 from stor to el tika
    16 A
    Z7
    , DZD / H 7 to
     h r-ts
    T
    X
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    property
    about 5
    characterized in that, in order to ensure uniform melt discharge per unit of time, the loading devices are made in the form of vibration chutes, the loading openings of which are located directly above the metering pipes, and the discharge device includes a drain pipe consisting of two coupled pipes forming in place the docking threshold located below the top of the outlet, the pipe from the hole to the threshold is made tapering, and the pipe from the threshold is expanding,
    [2]
    2. The electric melting furnace according to claim 1, characterized in that it is provided with a ventilation pipe located in the cavity of the exhaust device 1 above the drain pipe.
    [3]
    3. The electric smelting furnace according to claim 2, wherein on the sides of the metering tubes facing the electrodes from the bottom end vertically upwards are made grooves.
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    类似技术:
    公开号 | 公开日 | 专利标题
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    CN112996932A|2021-06-18|Device for chlorinating titanium-containing raw material in chloride salt melt
    US1438381A|1922-12-12|Electric reverberatory furnace
    同族专利:
    公开号 | 公开日
    YU45269B|1992-05-28|
    FI853458L|1986-03-19|
    FI853458A0|1985-09-10|
    DK423685A|1986-03-19|
    DK161381C|1992-01-06|
    JPS6172987A|1986-04-15|
    NO853650L|1986-03-19|
    DK423685D0|1985-09-18|
    DE3562135D1|1988-05-19|
    EP0176497B1|1988-04-13|
    DK161381B|1991-07-01|
    ATA296484A|1986-04-15|
    YU142285A|1987-10-31|
    AT381788B|1986-11-25|
    US4697274A|1987-09-29|
    JPH0150833B2|1989-10-31|
    EP0176497A1|1986-04-02|
    DD240946A5|1986-11-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR680669A|1928-10-04|1930-05-05|Device for distributing the charge of furnaces, in particular furnaces used for electrothermal processes|
    DE896028C|1944-07-14|1953-11-09|Eisenwerke Gelsenkirchen A G|Process for the recovery of foundry shaft furnace slag|
    US2523092A|1947-05-02|1950-09-19|Bryk Petri Baldur|Method for extraction of iron|
    JPS4817403B1|1968-10-03|1973-05-29|
    JPS4848305A|1971-04-14|1973-07-09|
    US3936588A|1972-03-20|1976-02-03|Elkem-Spigerverket|Control system for electrical furnaces|
    US3760960A|1972-05-25|1973-09-25|Demag Ag|Apparatus for charging electric furnaces|
    SE378735B|1972-11-17|1975-09-08|Asea Ab|
    JPS5017165A|1973-06-13|1975-02-22|
    US4029887A|1976-04-27|1977-06-14|Corning Glass Works|Electrically heated outlet system|
    JPS5520301A|1978-07-22|1980-02-13|Inst 50 Metarurugii Imeeni Rec|Apparatus for sending gas or exhausting reacted gas in electric melting furnace|
    NZ193699A|1979-05-23|1984-08-24|Siddons Ind|Electric furnace with discharge sleeve extending through side wall|
    EP0035850A1|1980-02-29|1981-09-16|Forty-Eight Insulations Inc.|Melting system, electric furnace and process for use in the production of high temperature mineral wool insulation|
    NO147532C|1981-04-27|1983-04-27|Elkem As|PROCEDURE AND DEVICE FOR CHARGING A MELTING OR REDUCING OVEN.|
    US4385918A|1982-01-26|1983-05-31|Owens-Corning Fiberglas Corporation|Method and apparatus for feeding raw material to an arc furnace|YU46333B|1987-04-30|1993-05-28|Oy Partek Ab|MELTING OVEN|
    US5045506A|1989-07-31|1991-09-03|Alcan International Limited|Process for producing mineral fibers incorporating an alumina-containing residue from a metal melting operation and fibers so produced|
    FI85912C|1990-04-11|1992-06-10|Partek Ab|FOERFARANDE OCH ANORDNING FOER STYRNING AV RAOMATERIALTILLFOERSELN TILL EN ELEKTRISK SMAELTUGN.|
    GB9108038D0|1991-04-16|1991-06-05|Forgemaster Steels Limited|Improved taphole design and method|
    DE69708538T2|1996-07-22|2002-07-25|Nippon Kokan Kk|Process for melting combustion waste and device therefor|
    DE69815820D1|1998-05-21|2003-07-31|Techint Spa|Level control device for a liquid material in a melting furnace or the like, in particular in stoves for the production of rock wool|
    UA92686C2|2006-11-02|2010-11-25|Роквул Інтернешнл А/С|Process and device for production of mineral fibres|
    US20080210718A1|2007-01-25|2008-09-04|General Kinematics Corporation|Fluid-Cooled Vibratory Apparatus, System and Method for Cooling|
    JP5483589B2|2010-09-01|2014-05-07|株式会社神戸製鋼所|Reduced iron material supply system|
    CN102826747B|2012-08-31|2014-08-06|朱兴发|Method used for meeting requirement on mineral wool production with short process|
    WO2021152140A1|2020-01-30|2021-08-05|Rockwool International A/S|Method for making man-made vitreous fibres|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT0296484A|AT381788B|1984-09-18|1984-09-18|ELECTRIC MELTING STOVE|
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