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    • 6. 发明授权
    • Method and converter for refining pig-iron into steel
    • US3932172A
    • 1976-01-13
    • US315377
    • 1972-12-15
    • Helmut KnuppelKarl BrotzmannHans-Georg FassbinderGuy SavardRobert Lee
    • Helmut KnuppelKarl BrotzmannHans-Georg FassbinderGuy SavardRobert Lee
    • C21C5/34
    • C21C5/34
    • Pig-iron is refined into steel by blowing oxygen and a protective screen of an encasing gas through injecting means located at or near the bottom of a converter containing a melt of molten metal. The encasing gas while protecting the injecting means, allows it to be consumed at substantially the same rate as the bottom of the converter so that the injecting means is not left projecting from the bottom of the converter. The encasing gas can be one which is inert to the melt or the metal of the injecting means or both, or it can be a gas which reacts sluggishly with the melt or the material of the oxygen feed pipe or both. Desirably, the oxygen jet is circular in cross-section and the encasing gas is in the form of a concentric jet.A converter for carrying out the method is made up of a pear-shaped sheet-steel casing having a refractory lining and an inserted bottom provided with nozzles in the form of metal tubes for the oxygen and encasing gas. Preferably, a substantial portion (for example about half) of the converter bottom is free of nozzles. The nozzles can be arranged in groups and there can be rows running parallel with the tilting axis of the converter. The nozzles may also be arranged to cause circulation of the molten metal in the converter. The nozzles can be constructed to provide for swirling movement of the encasing gas. Examples of encasing gas which may be used are hydrogen, nitrogen, noble-gases, carbon monoxide, carbon dioxide, ammonia, hydrogen-fluoride, furnace-mouth gas, coke-oven gas, natural gas and other gases containing hydrocarbons.
    • 7. 发明授权
    • Apparatus for measuring a mass flow
    • 用于测量质量流量的装置
    • US06952971B2
    • 2005-10-11
    • US10362270
    • 2001-08-22
    • Karl BrotzmannHans-Georg FassbinderHans KoppKarsten Schutte
    • Karl BrotzmannHans-Georg FassbinderHans KoppKarsten Schutte
    • G01F1/80G01F1/82
    • G01F1/80
    • The invention relates to a device for measuring a mass flow, comprising a measuring wheel (3) that is supported by a shaft (4) and that is driven and impinged axially by the mass flow. Said wheel deflects the flow, giving it both radial and tangential speed components. The shaft bears an actuation spur wheel (7), which engages with an intermediate spur wheel (8) that is held in position by a force measuring device (14) and has a second meshing with a drive spur wheel (9) that is driven by a drive motor (13). The diameter of the actuation spur wheel (7) is more than 0.3 fold, preferably 0.5 to 1 of the diameter of the measuring wheel (3). This provides a device for measuring a mass flow, which has a high zero constant and thus a high degree of measuring precision, is cost-effective to produce, robust during operation and which has none of the disadvantages of prior art.
    • 本发明涉及一种用于测量质量流量的装置,包括由轴(4)支撑并被质量流动轴向冲击的测量轮(3)。 所述车轮偏转流动,给予径向和切向速度部件。 所述轴承有致动正齿轮(7),所述致动正齿轮(7)与通过力测量装置(14)保持在适当位置的中间正齿轮(8)接合,并且与被驱动的驱动正齿轮(9)具有第二啮合 通过驱动马达(13)。 致动正齿轮(7)的直径大于测量轮(3)的直径的0.3倍,优选为0.5至1。 这提供了一种用于测量质量流量的装置,其具有高零常数,因此具有高度的测量精度,在生产中是成本有效的,在操作期间是坚固的,并且其没有现有技术的缺点。