Two-dimensional modelling of nonisothermal reduction of an iron ore-coal composite pellet

摘要

In some coal-based direct reduction processes, composite pellets consisting of a mixture of fines of iron-bearing oxide, carbonaceous material (coal, coke, char) and samall amount of binder are produced. The pellets are heated and the iron ore is reduced to iron. Recent studies have demonstrated that composite pellets can be charged as burden material into a rotary kiln, a rotary hearth furnace and even into a blast furnace [10,11]. The use of composite pellets allows the enhancement of productivity in ironmaking processes.