Obtaining sponge iron in a rotary shaft furnace using Inmetco technology with combined sintering and metallisation processes
DOI:
https://doi.org/10.15802/tpm.3.2025.09Keywords:
finely dispersed waste, ore-coal composites, PVP furnace, sponge ironAbstract
Of the numerous processes without coke metallurgy, sponge iron production has now reached its greatest industrial development. The reason for this development was the possibility to organise the production of high-quality metal according to the following scheme: technology for processing finely dispersed waste from blast furnace and steelmaking production into ore-coal composite pellets, their calcination and metallisation on a PVP ring chamber calciner; use of this technology in the INMETCO, FastMet, and DRYIron processes. This article substantiates the conditions for obtaining sponge iron in a PVP furnace (rotary hearth furnace). The aim of this work is to experimentally study the process of obtaining sponge iron by combining sintering and metallisation of ore-coal composite pellets in a rotary hearth furnace. Research methods: chemical analysis of the obtained pellets, determination of total and metallic iron, residual carbon, slag-forming components. Material and heat balance of the metallisation process, calculation of specific energy consumption and determination of heat losses by furnace zones.
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