| 摘要 |
<p>PCT No. PCT/DE98/00791 Sec. 371 Date Sep. 17, 1999 Sec. 102(e) Date Sep. 17, 1999 PCT Filed Mar. 17, 1998 PCT Pub. No. WO98/42164 PCT Pub. Date Sep. 24, 1998A method for regulation or control of the melting process in a three-phase arc furnace having at least three electrodes whose height is adjustable individually and independently of one another. Each phase of the three-phase current which feeds the three-phase arc furnace is assigned at least one electrode. The temperature of the three-phase arc furnace is monitored, particularly at points which are at risk of overheating, such as the walls of the three-phase arc furnace in the vicinity of the electrodes. When the three-phase arc furnace reaches a critical temperature in the vicinity of an electrode, the power emission from this electrode is reduced in such a manner that overheating of the three-phase arc furnace is prevented, and in that the power emission from the other electrodes or from some of the other electrodes is increased in such a manner that the total power emission from the electrodes is a maximum at a predetermined voltage.</p> |
