Abstract
Utilization of biomass is indispensable to qualify the future demand of energy. Biomass, however, has several disadvantages such as small calorific value, so we should develop a new technology of using effectively it. On the other hand, as for the steel manufacturing process, we must think about an effective utilization of iron sludge and scrap. In this paper, we presented a new method to produce a iron/carbon function material utilizing a carbon in biomass which can be used as a iron recycling media to blast and revolving furnaces. The method is as follows: The biomass was impregnated by iron compound aqueous solution. Through pyrolyzing the iron impregnated biomass, pure iron crystal/carbon composite was also successfully produced above 600 °C. As an option, Fe3O4/carbon composite was also successfully produced by the gasification with steam at low temperature. The irons in these composites were reduced by carbon with evolving CO and CO2 at high temperature. Thus, it is clarified that the proposed method is attractive for producing alternative materials of cokes/iron ore and a recycle media of scrap using biomass.
