| 摘要 |
<p>Disclosed is a process for producing pig iron alloys and at least one member selected from the croup consisting of pozzolanes, synthetic blast furnace slaps, belite and alite clinkers from oxidic liquid slag, the process comprising reducing the oxidic liquid slag above an iron bath in a reactor containing submerged tuyeres, while blowing carbon through the submerged tuyeres and into the iron bath to maintain the iron bath at a carbon content of between 2.5 wt% and 4.6 wt%. Also disclosed is an apparatus for producing pig iron alloys and at least one member selected from the group consisting of pozzolanes, synthetic blast furnace slaps, belite and alite clinkers from oxidic liquid slag positioned above an iron bath, the apparatus comprising a bottom-blowing converter comprising submerged tuyeres for blowing carbon into the iron bath, the bottom-blowing converter having a tapering base region which receives the iron bath and a height corresponding to that of the iron bath. The apparatus also comprises at least one foam-detecting probe for detecting formation of foam in the bottom-blowing converter and for determining at least one factor selected from the group consisting of the concentration of carbon within the iron bath, the temperature of the oxidic liquid slag, and the temperature of a gas space within the bottom-blowing converter and generating signals based on the factor. A control circuit is provided for receiving the signals and controlling an amount of carbon in the iron bath to maintain the carbon content between 2.5 wt% and 4.6 wt%.</p> |
