| 摘要 |
<p>Operating a shaft furnace, in particular a cupola furnace, for melting starting material, comprises heating the shaft furnace by a burner, and supplying a gaseous or liquid fuel and a gaseous oxidant, which comprises an oxygen portion of more than 21% to the burner. Operating a shaft furnace, in particular a cupola furnace, for melting starting material, where the shaft furnace is heated by combustion of a solid fuel and where an injection gas, which has an oxygen portion of more than 21%, is injected into the shaft furnace, where the injection gas is accelerated in a driving nozzle and an injector blast is sucked using the low pressure created in response to the acceleration of the injection gas and is combined with the injection gas to form a driving nozzle flow and is fed into the shaft furnace, comprises heating the shaft furnace by a burner, and supplying a gaseous or liquid fuel and a gaseous oxidant, which comprises an oxygen portion of more than 21% to the burner. An independent claim is included for a shaft furnace, in particular a cupola furnace, for melting a starting material, where a feed line for an oxygen-containing injection gas is made, at the downstream end of which a driving nozzle is connected and where an injector blast pipe empties into the feed line for the injection gas or into the driving nozzle, comprising at least one burner provided with a feed line for a gaseous oxidant and with a feed line for a liquid fuel or a gaseous fuel.</p> |
