英汉相间Ladle furnace with DC heating

Ladle furnace with DC heating

钢包精炼炉直流加热

A metallurgical ladle furnace has a ladle for containing the melt, an arcing electrode positioned on the ladle's axis, and a melt electrode in the ladle's lower portion and substantially symmetric with respect to th e arcing electrode. DC power applied to the electrodes results in an arc between the arcing electrode and the melt for heating the melt and incidentally causing the melt to stir in vertical directions, the melt moving downwardly in the middle below the arc, upwardly along the walls of the melt and inwardly towards the arc. A DC powered coil surrounds the ladle horizontally at half the ladle's height or higher, around the upper portions of the melt. The field of this coil in cooperation with a DC flow in the melt caused by the current flow between the electrodes, provides a substantially tangential stirring force on the melt which is in addition to the stirring force of the electrode current in the melt. This additional force results in the surface of the mel t acquiring a concave shape surrounding the arc and protecting the ladle's wall from the arc flare while increasing the melt's energy absorption from the arc.

一种冶金炉钢包包含有一个融化包，一电弧电极定位在钢包的轴，一包融电极在较低的部分，就大大的电弧电极对称。直流电源的结果应用到电极之间的电弧在电极电弧和熔融加热熔化和熔体意外发生在垂直方向搅拌，熔体移动下方的弧形中间向下向上沿着墙壁，融化暗暗地对弧。一个直流电源线圈包围水平的一半瓢瓢的高度或更高，围绕融上部。这种合作与直流流在熔体电极之间的电流流动造成的，线圈领域提供了大量切向力对熔体搅拌里面除了电极的电流在熔体搅拌力。这在表面附加力的结果融化收购凹形状和保护周围的弧弧耀斑从钢包的墙壁，同时增加熔体的电弧能量的吸收。

Claims:

What is claimed is:

1. A ladle furnace comprising a ladle containing a melt of molten metal up to a level at or above half the ladle's height, an arcing electrode positioned substantially on the ladle's vertical axis so as to form a heating arc with said melt in the ladle, a melt electrode positioned in the ladle's lower portion subs tantially symmetrically with respect to the arcing electrode, means for supplying the arcing and melt electrodes with DC power so as to cause a symmetrical flow of current vertically through said melt and between the arc and the melt electrode, a coil surrounding the ladle and positioned at or above half the ladle's height and below said level, and means for supplying the coil with DC power, said coil when powered by said means projecting a field through the melt horizontally with respect to said vertical flow of current so as to intersect said flow and cause said melt to rotate.

声明：

什么是声称是：

1、钢包炉，包括一包包含熔体熔化的金属注册以上半钢包的高度水平，一电弧电极定位在钢包的垂直轴大幅从而形成一个加热的圆弧和说融化在钢包，一融化电极放置在包的下部相对于电弧放电电极大幅对称，是指负责提供电弧和熔化直流电源电极，从而造成了目前对称流垂直通过说熔体之间的电弧和熔化电极，线圈周围的钢包和达到或超过一半的钢包的高度定位及以下说的水平，并提供与直流电源线圈的手段，表示线圈通电时的人说是指突出的领域，通过熔体就横向说，垂直流电流所以说，以交叉流动，造成说融化旋转。

2. A method for operating a ladle furnace comprising filling the ladle with a molten metal melt up to a level above at least half the ladle's height, positioning an arcing electrode substantially on the ladle's vertical axis and above the melt's surface, supplying DC power to the arcing electrode, and symmetrically with respect to the arcing electrode to the lower portion of the melt by means of a melt electrode so as to form an arc between the electrode and the melt and heat the melt and so as to cause a vertical flow of current through the melt, and surrounding the ladle with a coil positioned horizontally at or above half the ladle's height and below said level and supplying the coil with DC power so as to cause the coil to project a field through the