• 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:
    1435888 Ore reducing furnaces VEREINIGTE OSTERREICHISCHE EISEN UND STAHLWERKE ALPINE MONTAN AG 21 Feb 1975 [22 Feb 1974] 7315/75 Heading F4B [Also in Division C7] Apparatus for reducing iron ore comprises a rotary kiln discharging into two hearth furnaces arranged in series, the three units being gastightly connected so that all exhaust gases are discharged through the kiln. In the particular embodiment described kiln 3 fired by burner 15 discharges into the first of two hearths (7, 8) formed in a common shell which is arranged to tilt about the axis of the kiln. The hearths are each provided with a tapping spout 18, and are separated by a weir 19 which is downwardly stepped on the side remote from the spout whereby by tilting in one direction slag or metal can be discharged, and by tilting in the other metal can be transferred from the first to the second hearth. The first hearth is heated by burners 9 or electrodes 17 to melt the charge, while in the second hearth slag-forming additions from hoppers 11, 13 are melted by electrodes 12 and the bath is then blown with oxygen from lance 14.
    公开号:SU721010A3
    申请号:SU762112190
    申请日:1976-11-12
    公开日:1980-03-05
    发明作者:Штифт Курт；Вацек Хельвиг
    申请人:Ферайнигте Эстеррайхише Айзен-Унд Штальверке-Альпине Монтан,Аг (Фирма)；
    IPC主号:
    专利说明:

    burners 8 and exhaust gases from chambers 9 and 10 of the hearth furnace. Pipe 11 serves to remove used waste gases. Heating of the smelting products of the 6 chambers of the furnace is produced by ceiling burners 12 or electrons 13 and 14, Bunker 15 is used to supply slag-like components. The hearth furnace measures have a common roof and are separated by a stepped threshold 17, which is high at the point of attachment to side wall 18, and has an outlet tray 19 high, and 18 at the point of attachment opposite the side wall. Slag-forming components come from bunker 19 and 20, and blowing oxygen with oxygen through pipe 21. The device works as follows. The ore from the bunker 1 and, for example, lime as a slag-forming component from the bunker 2 by means of a vibrator 5 and a drain inclined tray 6 is fed into a rotating tube furnace 7. Coal, coal or coke breeze is injected from the hopper 3 through the blown pipe 4. In the rotary kiln furnace, above all, along with the removal of water and hydrated water, if necessary, ore can be extracted. Upon further passage of the ore through the rotating tube furnace, at its temperature, it occurs. significant reduction (to obtain up to 85-90% of the metal). A solid, doughy or half-liquid mixture of iron, slag and unreduced ore is continuously fed into the rotary tube furnace 7 on the bottom of the first chambers of the hearth furnace, is collected there and is heated to the melting temperature. In this case, complete ore reduction and carburizing of iron occur. Carburizing equally occurs due to excess coal in the discharge device of the rotary kiln of the tube furnace, and through additional injection of carbon, and the carburization should be the greater, the poorer the iron used is ore, so so that the loss of iron in the slag is minimal. During this reaction, the hot gases containing CO come out through the rotary tube furnace 7. When the required amount of molten liquid iron is accumulated in the chamber 9 of the hearth furnace, the furnace is tilted towards the tray 19 and the slag goes down (Fig. 3) . Following this, the furnace is tilted in the opposite direction (figure 4) and most of the contents of chamber 9 are poured into chamber 4. Then the furnace is set to the normal position (figure 5). Depending on the degree of carbonization, P1) produced in chamber 9, in chamber 10 there is either steel with high carbon content or cast iron, Nz bins 19 and 20 enter slag-forming components and melt with electrodes 14, then through blown Oxygen is injected into the tube 21 until the cage is cleaned as desired. In accordance with the desired quality of steel, it is possible further by opening the tap hole and slightly tilting the furnace (Fig. 6) or pouring the steel into a casting ladle, or merging only the gopak, and submerging the steel under the new slag with finer processing and alloying. Gases containing CO, arising from both the cleaning and the finer treatment, pass through the hearth furnace to the rotating tube furnace 7. Thus, the counter gas flow takes place not only in the rotating tube furnace. This principle applies to all process phases, starting from raw materials to finished steel, as a result of which all waste gases with their chemical composition and considerable heat are used to the maximum extent and significantly reduce the amount of fuel required to carry out the entire process. The invention allows for the use of large-scale crushed material in large quantities. Separate technological operations are subject to change. Thus, for example, the first chamber of the hearth furnace can be used as a purely collecting and overheating one, while carburizing is performed in the second chamber of the hearth furnace. Each kggmer of the hearth furnace can have its own outlet and discharge chute, and the outlet holes can be closed and opened as needed so that a full or partial release of metal and / or slag from each chamber of the hearth furnace is possible without disrupting the process in another oven chamber. In addition, with the help of the invention it is only possible to go by smelting iron, when it is absolutely necessary in accordance with the quality of the ore. With the appropriate ore with a high iron content, direct production of steel is possible. This variety of processing is created by the further processing in separate batches to a continuous process in a rotary tube furnace, so that at any time it can take place on another product, for example steel with a different composition, and the economic continuum method at the same time remains. power.
    权利要求:
    Claims (3)
    [1]
    1. A device for processing iron ore into an iron-containing melt, including a rotary kiln for heating and reducing ore and a hearth furnace for refining the melt with an outlet, the working spaces of which are gas-tightly interconnected, that, in order to simplify the process of refining the melt, the hearth furnace is made in the form of two chambers and is installed with the possibility of rotation relative to its longitudinal axis, and
    The fish are separated by a stepped threshold, the upper level of which is located on the side of the outlet.
    [2]
    2. The device according to claim 1, characterized in that the longitudinal axis of the furnace is the same
    with a longitudinal axis of the tubular furnace.
    [3]
    3. The device according to PP.1 and 2, from which it is located so that under the chamber closest to the tubular furnace is located above the bottom of the second chamber.
    Sources of information taken into account in the examination
     1. Patent of Germany No. 956514, cl. 18 fe 5/32, 1957,
    2. Ivantsov G, P., Vasilivitsky A.V.,
    5 Smirnov V.I. Continuous steelmaking process, Metallurgists, 1967, p.85.
    - / "
    FIG. five
    FIG. 6
    类似技术:
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    US3182985A|1965-05-11|Apparatus for making steel
    SU1134607A1|1985-01-15|Method for preparing metal charge for steel smelting
    同族专利:
    公开号 | 公开日
    DE2412617B2|1975-12-18|
    ES452808A1|1977-11-01|
    BR7501067A|1975-12-02|
    SE7501146L|1975-08-25|
    IN139604B|1976-07-10|
    JPS50142413A|1975-11-17|
    IT1031515B|1979-05-10|
    GB1435888A|1976-05-19|
    FR2262114A1|1975-09-19|
    ATA147374A|1975-04-15|
    AT327253B|1976-01-26|
    ES434968A1|1977-03-16|
    DE2412617A1|1975-08-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2760199C1|2020-12-30|2021-11-22|федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" |Continuous steel production unit|
    JPH0132146B2|1983-10-03|1989-06-29|Yoshida Kogyo Kk|
    BE1011186A3|1997-05-30|1999-06-01|Centre Rech Metallurgique|Melting process for producing liquid from sponge iron plant for implementation.|
    JP2001525487A|1997-12-03|2001-12-11|シドマールエヌ．ヴイ．|Method and apparatus for reducing iron oxide and refining iron|
    KR101220554B1|2010-12-28|2013-01-10|주식회사 포스코|Apparatus for Manufacturing Molten Iron and Method for Manufacturing Molten Iron Using the Apparatus|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT147374A|AT327253B|1974-02-22|1974-02-22|METHOD AND DEVICE FOR THE PREVENTION OF IRON ORES|
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