Metallurgical plasma melting furnace
    1.
    发明授权
    Metallurgical plasma melting furnace 失效
    冶金等离子熔融炉

    公开(公告)号:US4418414A

    公开(公告)日:1983-11-29

    申请号:US126569

    申请日:1980-03-03

    IPC分类号: F27B3/08 H05B7/00 H05H1/00

    CPC分类号: F27B3/085

    摘要: A metallurgical plasma melting furnace for the melting of metals and alloys is provided with a substantially cylindrical melting vessel and a plurality of plasma burners disposed in burner openings in the walls of the vessel for creating flow stable plasma arcs. The vessel includes a first vertical cylindrical domain and a second vertical cylindrical domain divided by a vertical longitudinal plane and wherein the burners are located in the first cylindrical domain facing the second cylindrical domain and positioned such that the points of intersection of the projections of the burner axes are disposed in the second cylindrical domain and the distance between the intersection points is less than the radius of the vessel.

    摘要翻译: 用于熔化金属和合金的冶金等离子体熔化炉具有基本上圆柱形的熔化容器和多个等离子体燃烧器,其设置在容器的壁中的燃烧器开口中,用于产生流动稳定的等离子弧。 容器包括第一垂直圆柱形结构域和由垂直纵向平面分开的第二垂直圆柱形区域,并且其中燃烧器位于面向第二圆柱形区域的第一圆柱形区域中,并且定位成使得燃烧器的突起的相交点 轴设置在第二圆柱形区域中,并且交点之间的距离小于容器的半径。

    Plasma burner operated by means of gaseous mixtures
    4.
    发明授权
    Plasma burner operated by means of gaseous mixtures 失效
    等离子燃烧器通过气体混合物操作

    公开(公告)号:US4469932A

    公开(公告)日:1984-09-04

    申请号:US427374

    申请日:1982-09-29

    CPC分类号: H05H1/3405 H05H2001/3478

    摘要: The present invention relates to a plasma burner for metallurgical furnaces which is operated with gaseous mixtures, wherein an addition gas is fed to the plasma burner via a ring conduit into the inside of the burner. The gas conduction pipes on the addition-gas outlet are arranged at a predetermined angle to the longitudinal axis of the burner, 35.degree. to 45.degree.. The point of intersection between plasma arc and addition gas is 25 to 45 mm in front of the rod-shaped cathode. In order to increase the output with constant arc current and without chemical reaction with as molten material, hydrogen or nitrogen is used as addition gas; and when a chemical reaction is desired, oxygen or oxygen-containing gas mixtures are used.

    摘要翻译: 本发明涉及一种用气体混合物操作的冶金炉的等离子体燃烧器,其中加气通过环形导管进入燃烧器的内部等离子体燃烧器。 加气出口处的气体导管与燃烧器的纵向轴线成35度到45度的预定角度。 等离子体电弧与添加气体的交点在棒状阴极前方为25〜45mm。 为了以恒定的电弧电流增加输出,并且没有作为熔融材料的化学反应,使用氢或氮作为添加气体; 并且当需要化学反应时,使用含氧气体或含氧气体混合物。