| 摘要 |
<p>This invention concerns a smelting installation with an electric-arc furnace in which the roof of the oven vessel is constructed out of two units (7, 8) which are separated by an aperture (38) and can be moved independently of one another relative to the vessel horizontally. One of these units (8) consists of a shaft (9) which serves as preheater for the charge. The upper part of the vessel and the shaft (9) have a converging wall sector (42a, 58, 59).</p> |
