Decarbonization Iron Making Furnace
Already
in the middle of the last century the
submerged arc furnace was used to reduce iron ore and thus for the production
of pig iron. The procedure is similar to the process techniques still used
today for the production of ferroalloys. Early on, there were efforts to reduce
the high energy demand for pig iron production in the SAF by means of upstream
installed, gas-powered pre-reduction processes and at the same time to be able
to use lower-quality applications due to the pretreatment. This is how the Krupp racing process and
similar processes with a rotary tube were developed and later, especially at
the end of the last century, processes with large rotary hearth furnaces.
Examples are the technologies known as “Inmetco”
and “Redsmelt” process.
Prereduction and SAF
Recently, another
combination has gained more interest: the combination of shaft furnace,
electrical reduction furnace and converter. This process line combines the very
effective, modern pre-reduction systems (as e.g. from the company Midrex) with
tailor-made electric furnaces for residual reduction and slag metallurgy and
enables the converter to adjust the desired pig iron quality.
Bluemetals offers
the complete conceptual engineering for
this line, to create an optimal SAF, which integrates itself perfectly and economically
into the overall process line. Bluemetals also mediates the necessary core
components for furnaces. Alternatively, Bluemetals also offers the evaluation
of planned or existing concepts.