Comparative Study on the Combustion Performance of Coals on a Pilot-Scale Test Rig Simulating Blast Furnace Pulverized Coal Injection and a Lab-Scale Drop-Tube Furnace

Direct evaluation of the combustibility of pulverized coals in ironmaking blast furnace pulverized coal injection (PCI) is difficult. A pilot-scale PCI rig may be used to test the combustion performance of a PCI coal. However, the replication of the conditions in the blowpipe–tuyere–raceway region is complicated and costly. Drop-tube furnaces (DTFs), which have been widely used in coal combustion research, are seen as an alternative to such...