Abstract
The variations in weight of dry coke, the basicity ratio, dry iron content, and moisture content of the fluxed sinter are the most critical in their effects on the thermal state of the furnace and hot metal composition. The agreement between actual and ordered weights of burden materials and dolomite handled by the larry car operators was very good. A serious lack of agreement occurred between changes in the ordered wet burden ratio and the actual changes in dry burden ratio. These changes were usually different in magnitude and were often in opposite directions. The variations in slag volume were substantal. In order to produce hot metal of uniform composition at Aliquippa, it is essential to control the amount of dry coke in the blast furnace charge and to stabilize the basicity ratio and moisture content of the fluxed sinter.
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