| 摘要 |
An electric arc furnace ( 10 ) has an outer shell ( 12 ) and an inner refractory lining ( 24 ). During its operation the electric arc furnace ( 10 ) contains a bath ( 28 ) of molten metal which has a minimum and a maximum operational level ( 32 ). An inner cooling ring ( 23 ) of copper slabs ( 20 ), which are in thermo-conductive contact with the inner refractory lining ( 24 ) and equipped with spray cooling means ( 22 ), is mounted to the outer shell ( 12 ) in the region ( 34 ) between the minimum and the maximum operational level ( 32 ). |
