| 摘要 |
<p>Oxygen feed to the furnace is continuously or intermittently varied for the purpose of affecting the composition of the smoke gases leaving the arc furnace. More specifically oxygen feed can be dependent on the smoke gas composition so that a certain smoke composition is given and maintained, whereby the portion of combustion gases can be reduced to a minimum. The oxygen feed can be in an amount precluding carbon monoxide. Provision can be made for a number of probes distributed over the cross section in the smoke gas outlet pipe and serving as for extracting smoke gas samples, the probes being connected to a mixing chamber. Connected to the latter is a continuously operating analysis device preferably for determining the carbon and/or oxygen content of the smoke gas.</p> |
