• 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:
    1. STEEL-MOLDING CONVERTER WITH COMBINED BOTTOMING OF BOTTOM FROM TOP AND BOTTOM TO MASTER, comprising a housing with trunnions and a bottom, equipped with a device for feeding blowing from below into the melt, characterized in that, in order to ensure maximum mixing of the metal during blowing, the device for blowing is blown down the melt is made in the form of a peripheral group of gas-permeable refractory elements radially located in the bottom area from the trunnion side directly at the vertical side wall of the casing, with the specified elements s are arranged symmetrically with respect to the projection axis of the pins on the bottom, passing through the axis of the vessel, and removed -from projection wasp pivots by a distance not exceeding half the radius of the bottom of the converter. 2. The converter according to claim 1, distinguished by the fact that the bottom is equipped with an additional group of absorbable refractory elements symmetrically located with respect to the line passing through the converter axis perpendicular to the axle projection of the axles on the bottom and spaced no more than half of the radius of the bottom of the converter, with each group of gas permeable to the refractory elements is made independent (gas supply. X
    公开号:SU1190993A3
    申请号:SU813229952
    申请日:1981-01-08
    公开日:1985-11-07
    发明作者:Гросжан Жан-Клод；Денье Ги；Болер Клод；Шлеймер Франсуа；Гоедер Фердинанд；Анрион Ромэн；Лоранг Люсьен；Метц Поль
    申请人:Энститю Де Решерш Де Ля Сидерюржи Франсэз (Ирсид) (Фирма)；Арбед С.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the field of ferrous metallurgy, in particular to devices for steelmaking with combined feed, blowing from above and below into the melt. The object of the invention is to ensure maximum mixing of the metal during purging. FIG. 1 shows a converter; a vertical section; in fig. cut A-A in FIG. 1. A steel-making converter consists of a metal body 1 with an internal refractory coating 2, which includes a cylindrical part 3 forming the side wall of the converter and a truncated cone or throat located at the top 4. The cylindrical part 3 is closed at the bottom by a bottom 5 pressed in tightly by means of a circular refractory heel 6. Oxygen is fed into the converter through the lance 10. The mixing gas nozzles are mounted in the bottom 5 of the converter; these are gas refractory gas nozzles The punched elements 15 and 18 are inserted into the refractory coating of the bottom 5 of the converter. These elements are a metal cup 11, inside of which a refractory gas-permeable mass 12 is placed, through which the gas can pass under pressure. The gas is supplied through the subsea nozzles 13 and passes into the bath 14 at the opposite end, which is in contact with the molten metal. . These elements replace the bricks, of which the bottom usually consists, and have respectively a similar shape and the same or slightly smaller sizes as the bricks they replace. Elements 15 are arranged symmetrically relative to the projection 9 of the axles of the pivots 8 on the bottom 5, the passage transverse to the axis of the converter, and removed from the projection 9 at a distance not exceeding half the radius of the bottom 5. An additional group includes refractory gas-permeable elements 18, also divided into two groups located diametrically opposite to each other y in the middle of the distance between, the peripheral elements 15 and the center 17 in the imaginary 19 and concentric circles 16 1 932 The refractory gas-permeable elements 18 are symmetrically located relative to the line 27 passing through the converter axis perpendicular to the projection 9 of the axis of the stop 8 on the bottom 5, removed from the projection 9 at a distance not exceeding half the radius of the bottom Z. Under the bottom 5, two annular concentric feeders 20 and 21 are provided, which through the feed nozzles 13 supply mixing gas, respectively, to elements 15 and 18. In the feeder and 20 and 21 gas enters the main gas pipelines 22 and 23, which run along the cylindrical part 3 of the converter, pass through the trunnion 8, in which an opening is provided, to the source 24 of pressurized gas, having devices for adjusting the separate gas supply to the elements 15 and 18. The two straight lines 25 and 26 are perpendicular to the plane 27 of the converter tilting and correspond to the lines of intersection of the bath surface with the bottom 5, when the converter is tilted in or out. side for: slag removal, or to the side for metal discharge. These lines limit the bottom portion that is not in contact with the molten metal when the converter is tilted to one side or the other. If it is necessary to avoid contact between the refractory elements 15 and the metal bath when emptying the converter, it should be placed ecchi elements in the sections of the imaginary circle 16 bounded by lines 25 and 26. The system of independent gas supply to each part of the group of refractory gas-permeable elements includes pressure, two supply pipelines 22 and 23 and an electropneumatic device consisting of a total volume counter 28 that feeds two networks in parallel, each of which is equipped with an electric valve 29 (29) of the type is all or nothing, followed by node 30 (AO), which unites the components regulating the gas supply in accordance with a given constant or variable value. The entire system is connected to gas pipes 22 and 23 by means of a thermal circular coupling 31, in which there are two concentric holes at the level of the trunnion 8. The coupling 31 makes it possible to shut off the power supply system regardless of the converter oscillations on its tilting axis. The system can include automatic control 32 using a computer to control the operation of electrovalves 29 and 29 using sensor 33, which measures the parameters characterizing the course of the refining reaction and, consequently, the tendency of the metal bath to nitrate, for example, the temperature and composition of the reacting gases ( particular carbon monoxide). The present invention can be used for both nitrogen and any other mixed gas capable of dissolving in the molten metal contained in the converter. 1 3 The use of the proposed invention will allow creating optimal words to ensure the maximum effect of metal mixing during blowing. With the third, the geometrical arrangement of refractory gas-permeable elements along two circumferences at the bottom of the converter increases the total flow rate of the stirring gas, and the critical moments during purging. CO is less effective), it is possible to blow the bath only around the periphery. Thus, it becomes possible to use nitrogen during the entire refining operation as an agitating gas, which will reduce the cost of production. .
    Fig, 2.
    权利要求:
    Claims (2)
    [1]
    1. STEEL SELVER CONVERTER WITH COMBINED SUPPLY OF BLOW FROM TOP AND LOWER TO THE MEL, comprising a body with trunnions and a bottom equipped with a device for supplying blast from below to the melt, characterized in that, in order to ensure maximum mixing of the metal during blowing, a device for supplying blow from below to the melt is made in the form of a peripheral group of gas-permeable refractory elements radially located in the bottom region from the trunnion side directly at the vertical side wall of the housing, while these elements are times escheny symmetrically with respect to the projection axis of the pins on the bottom, passing through the axis of the vessel, and removed from the projection wasp pivots at a distance not exceeding half the radius of the bottom of the converter.
    [2]
    2. The converter according to claim 1, characterized in that the bottom is equipped with an additional group of gas-permeable refractory elements symmetrically located relative to the line passing through the converter axis perpendicular to the projection of the axis of the trunnions on the bottom and remote from the projection of the axis of the trunnions at a distance not exceeding half the radius the bottom of the converter, with an independent gas supply to each group of gas-permeable refractory elements.
    bw £
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    同族专利:
    公开号 | 公开日
    ES8203973A1|1982-04-01|
    EP0032350A3|1981-08-26|
    AU6604681A|1981-07-16|
    IN154540B|1984-11-10|
    EP0032350B1|1985-07-03|
    EP0032350A2|1981-07-22|
    US4369060A|1983-01-18|
    PL229121A1|1981-09-18|
    BR8100113A|1981-07-21|
    CS242866B2|1986-05-15|
    DE3070844D1|1985-08-08|
    RO81955A|1983-07-07|
    CA1172048A|1984-08-07|
    LU82069A1|1981-09-10|
    PT72324B|1981-12-18|
    AT14144T|1985-07-15|
    JPS56102508A|1981-08-17|
    RO81955B|1983-06-30|
    AU540800B2|1984-12-06|
    PT72324A|1981-02-01|
    ZA8177B|1982-01-27|
    ES498382A0|1982-04-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1210459A|1957-12-02|1960-03-09|A R B E D|Steelmaking process and converter for this or similar process|
    BE609232A|1961-10-16|1962-04-16|Centre Nat Rech Metall|Improvements to cast iron refining processes|
    US3854932A|1973-06-18|1974-12-17|Allegheny Ludlum Ind Inc|Process for production of stainless steel|
    FR2322202A1|1975-08-29|1977-03-25|Siderurgie Fse Inst Rech|Steel refining by oxygen lancing and bottom blowing - for improved quality steel of various grades|
    US4198230A|1977-05-04|1980-04-15|Eisenwerk-Gesellschaft Maximilianshutte Mbh|Steelmaking process|
    US4195985A|1977-12-10|1980-04-01|Eisenwerk-Gesellschaft Maximilianshutte Mbh.|Method of improvement of the heat-balance in the refining of steel|
    US4280838A|1979-05-24|1981-07-28|Sumitomo Metal Industries, Ltd.|Production of carbon steel and low-alloy steel with bottom blowing basic oxygen furnace|FR2501722B1|1981-03-11|1986-08-14|Siderurgie Fse Inst Rech|PROCESS FOR THE PNEUMATIC BREWING OF A METAL BATH|
    US4488903A|1984-03-14|1984-12-18|Union Carbide Corporation|Rapid decarburization steelmaking process|
    AT382889B|1984-03-15|1987-04-27|Voest Alpine Ag|RINSING DEVICE FOR A METALLURGICAL VESSEL|
    US4529442A|1984-04-26|1985-07-16|Allegheny Ludlum Steel Corporation|Method for producing steel in a top oxygen blown vessel|
    US4599107A|1985-05-20|1986-07-08|Union Carbide Corporation|Method for controlling secondary top-blown oxygen in subsurface pneumatic steel refining|
    AT384034B|1986-02-03|1987-09-25|Voest Alpine Ag|RINSING DEVICE FOR A METALLURGICAL VESSEL|
    FR2632971B1|1988-06-17|1993-09-03|Vallourec|PROCESS FOR TREATING LIQUID STEEL BY GAS INJECTION THROUGH THE BOTTOM OF POCKET|
    LU92813B1|2015-09-02|2017-03-20|Wurth Paul Sa|Enhanced pressurising of bulk material in lock hoppers|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    LU82069A|LU82069A1|1980-01-09|1980-01-09|METHOD FOR REFINING A METAL BATH|
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