Implementation of technology for utilization of waste products with iron content in the rotary hearth furnace (RHF) |
![]() |
![]() |
![]()
Project summaryWaste of steel manufacture (dust and sludge) is sintered and conveyed to the revolving hearth furnace (RHF), where it’s heated at high-temperature atmosphere thus acidized iron is regenerated and turned out to be the iron of direct regeneration (DRI). The regeneration reaction is finished in 15 minutes due to the radial heat exchange and quick reaction of small fractions. The DRI includes steel iron, some amount of zinc plumb and alkali iron from 605 till 85%, that’s way it’s a good addition in the process of cast iron and steel production. The DRI consumers can be both blast furnaces and other smelting aggregates, such as electric arc furnaces. Technical aspects of the projectTechnology of waste (including iron) utilization implementation has to provide reliable and highly effective, ecologically save methods of sludge treatment – dangerous waste of steel production and to assist to the substitution of natural resources (iron ore) usage as iron. As a result the project activity leads to the reduction of dangerous resources emission and assists to carbon usage in the process of regeneration, which is a component of waste. The main technical indexesThe main characteristics of revolving hearth furnace (RHF), installed at Kimitsu Works enterprise in Japan, are pointed in the table below.
Project efficiency
Project socio-economic consequencesThe project implementation will have the raw of socio-economic consequences for the enterprise and region, such as:
Propositions concerning the technology of waste (including iron in RHF) utilization implementation were also suggested and learnt during visiting of OJSC "Zaporijstal" and OJSC "MSW named after Illich". |