stahl und eisen 01-02/2020 Leseprobe

INNOVATION + ENTWICKLUNG
Anlagentechnik
An Alternative to onventional
Minimills – Insights in
Danielis MI.DA. technology
Eine Alternative zu konventionellen Minimills –
Einblicke in Danielis MI.DA.-Technologie
Autor:
Andrea De Luca,
Danieli
It all began in the early s in the USA, when a minimill customer asked Danieli to
design an innovative mill to compete with the countrys big steelmakers in terms of
operating costs and overall investment. The development of the Danieli Micromill-MI.
DA-technology followed from the successful application of the Endless asting and
Rolling technology to the production of spooled coils and wirerod, rebars and smooth
rounds. With the Twin-MI.DA.-configuration it is possible to design and supply a largescale
Micromill capable of producing up to 1. Mton of finished products in endless
configuration, with very high efficiency both in terms of environmental sustainability
and energy savings to minimize 2
emissions, as well as to preserve natural resources.
In den frühen 2000er Jahren wurde Danieli in den USA damit beauftragt, ein innovatives
Werk zu entwerfen, das mit den großen Stahlherstellern des Landes hinsichtlich Betriebskosten
und Gesamtinvestitionen konkurrieren kann. Aus dieser Anfrage entwickelte sich die Danieli-
Micromill-MI.DA-Technologie. Mit der Zeit wurde die mögliche Jahresproduktion um den Faktor
5 erhöht und die Anlage ist sowohl im Hinblick auf die Umweltverträglichkeit als auch auf
Energieeinsparungen sehr effizient: CO 2
-Emissionen können so minimiert und die natürlichen
Ressourcen geschont werden.
T
oday, for Danieli the MI.DA. technology
is a strategic product and a primary
element of its vision of the near future.
The MI.DA. was initially conceived as a
regional plant capable of producing up
to , tpy, euipped with a single rolling line
with a maximum hourly productivity of tons. It
was designed to meet the demand of a limited area
surrounding the plant, with more competitive operating
costs compared to traditional minimills of greater
size. In the past decade, the MI.DA. technology made
it possible to define new milestones in the progress
of minimills, and to achieve goals that led Danieli
to consolidate its technological position in the endless
casting and rolling process, a development that
started in 1 with the ABS Luna plant. Since then
both process and technology have been consolidated
and several successes have been achieved, starting
with M Arizona in , passing through the latest
startup of the two Egyptian Steel MI.DA. facilities
for II in 1 and NPSS in 17, and the M
plant early in 2018.
Through the years Danieli has been able to cast
steadily at speeds up to 7. mmin with even higher
speed peaks, as well as to increase the overall process
yield to with 4 plant uptime. Now, thanks to
the latest technological developments, Danieli ER
Endless asting and Rolling process is a well-proven,
reliable and cost-efficient way to produce rebar in
bars, spooled coils and wirerod, and is presumably
going to completely supersede the conventional
minimill concept, mainly due to the revolutionary
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stahl und eisen 140 (2020) Nr. 1/2