| 摘要 |
<p>Steel containing 0.02-1.8% of carbon is produced in an arc furnace by first forming a pool of molten iron and then continuously introducing iron-bearing material, especially sponge, in small particulate form into the bath at a rate controlled by reference to the power input so that when the required amount of material has been charged the bath is at the desired temperature and carbon content for tapping. The initial charge may, apart from fluxes, carbon and any necessary alloying additions such as ferromanganese or ferrosilicon, consist of scrap metal, or the latter may be partially or wholly replaced by sponge. By recarburizing the final bath the process may produce grey cast iron. The process may be operated continuously.</p> |
