Off-gas Dust in an Experimental Blast Furnace

Off-gas Dust in an Experimental Blast Furnace

“…The EBF has proved to display similar behaviour as full-scale blast furnaces regarding the formation of the different zones within the blast furnace, the composition of the reducing gas and gas distribution over the radius. 8) A faster response time after an operational change can be seen in the EBF and is caused by faster throughput of burden, shorter residence time of the ascending gas and the size of the coke reserve.…”

“…Characterization of flue dust in part 1 of this study 8) has shown that Fe-containing material made up the major part of the Ͻ0.063 mm fraction and C-containing material the major part of Ͼ0.075 mm.…”

“…The accessibility to process data along with shaft material and off-gas dust provided opportunities to evaluate correlations between dust formation and furnace conditions. In part 2 of a two-part study, relations between process conditions and dust generation will be discussed, while the first part 8) focused on characterization of off-gas dust and in-burden fines.…”

“…h CO was higher with olivine pellet operation than for sinter addition to the burden. The H 2 level reached a higher percentage during olivine pellet operation in test periods 1-4 than during sinter addition to the burden in test periods [5][6][7][8].…”

Friction Forces and Mechanical Dust Generation in an Iron Ore Pellet Bed Subjected to Varied Applied Loads

“…3) Based upon an investigation of off-gas dust, it has been concluded that the Fe oxide particles in flue dust are mechanically formed due to abrasion of the pellets. 4) Moreover, a considerable amount of dust is generated due to the mechanical wear/degradation of iron ore pellets during transportation and handling. This amount depends on the severity of the transportation and handling steps such as the vessel loading systems, the number and height of drops, the length of conveyor belts and the descending velocities in side bins.…”