公开(公告)号：US20010043640A1

公开(公告)日：2001-11-22

申请号：US08806848

申请日：1997-02-26

申请人： ANSEL M. SCHWARTZ

发明人： HIROSHI SHIMIZU ,  JOSEPH L. HAKE ,  RICHARD L. COOK

IPC分类号： H05B007/144 ,  F27D003/00

CPC分类号： F27B3/085 ,  F27B3/10 ,  F27B3/183 ,  F27D1/1816 ,  F27D2001/1841 ,  F27D2099/0023

摘要： The present invention pertains to a direct current electric arc furnace for melting or heating raw materials or molten material. The furnace comprises a refractory lined vessel for holding raw or molten metal material. The furnace also comprises a first top electrode and at least a second top electrode. Each of the top electrodes enters the vessel above the raw or molten material and has a position in the vessel. The furnace comprises at least one bottom electrode mounted in the bottom of the vessel and in electrical contact with the raw or molten material in the vessel. Additionally, the furnace comprises an electrical power supply mechanism with conductors to electrically connect to the top electrodes and the bottom electrode in order to input electrical energy into the material through the top and bottom electrodes in the form of arcs which deflect toward each other and define a hot area. The first and second top electrodes have the same electrical polarity while the bottom electrode has an opposite electrical polarity to the electrical polarity of the top electrodes. The present invention pertains to a method for heating raw material. The method comprises the steps of providing direct current to a first top electrode and a second top electrode having the same electrical polarity, and to a bottom electrode having opposite polarity to the top electrodes in a vessel. Next, there is the step of creating a first electric arc in the vessel from the first top electrode which contacts the material. Then, there is the step of creating a second electrical arc in the vessel from the second top electrode which contacts the material and is deflected toward the first electric arc to create a hot area.

摘要翻译： 本发明涉及用于熔化或加热原料或熔融材料的直流电弧炉。 该炉包括用于保持原料或熔融金属材料的耐火衬里容器。 炉还包括第一顶电极和至少第二顶电极。 每个顶部电极在原料或熔融材料上方进入容器，并且在容器中具有位置。 该炉包括至少一个底部电极，其安装在容器的底部并与容器中的原料或熔融材料电接触。 另外，炉子包括电源供应机构，其具有导体以电连接到顶部电极和底部电极，以便通过顶部和底部电极将电能以电弧的形式输入到材料中，所述电弧以彼此偏向并且限定 一个热门地区。 第一和第二顶部电极具有相同的电极性，而底部电极具有与顶部电极的电极性相反的电极性。 本发明涉及原料加热方法。 该方法包括以下步骤：向具有相同电极性的第一顶电极和第二顶电极提供直流电流，以及向容器中与顶电极极性相反的底电极。 接下来，存在从与材料接触的第一顶部电极在容器中产生第一电弧的步骤。 然后，存在从第二顶部电极在容器中产生第二电弧的步骤，该第二电极与材料接触并朝着第一电弧偏转以产生热区域。