sPeCIAL ArABAL - ALUMINIUM-Nachrichten – ALU-WEB.DE

teChNOLOGIe
Köllemann recently supplied a 60t/h coke preheater to an anode plant in China – the largest machine currently
available on the market
the use of standard pitch will come
into force in China in 2016/17.
“For the use of high-temperature
pitch one requires heat-transfer media
that can reach temperatures of
up to 400 °C. We are currently evaluating
various heat-transfer media
with respect to their suitability and
are also working on a special project
with an external institute,” says
Mr Fiedler, adding that he does not
wish to reveal any further details
at the moment for competitive reasons.
■
Integration der Gattierungsrechnung
macht recycling noch effizienter
Um Aluminiumschrotte effektiv und
qualitätsgesichert in der laufenden Produktion
einsetzen zu können, ist eine
optimale Gattierungsrechnung unerlässlich.
Sie wird jedoch oft als Insellösung
betrieben, was Zeit bei der Einstellung
der gewünschten Qualitäten kostet.
Durch die intelligente Integration in ein
Produktionsmanagementsystem können
Aluminiumrecycler ihre Prozesse nun an
zentraler Stelle optimieren. Und entscheidende
Wettbewerbsvorteile erlangen:
Da alle Informationen zu jeder Zeit an
jedem Ort in Echtzeit zur Verfügung
stehen, kann mit einer schnellen und präzisen
Analyse der Schmelze die Zahl der
Nachlegierungszyklen deutlich gesenkt
werden. In der Praxis werden damit
Raten zwischen 1 und 1,5 erreicht. Das
steigert nicht nur die Durchsatzrate, sondern
optimiert auch Lagermanagement,
Energiebilanz und Einkauf. Das Ergebnis:
ein transparenter, maximal produktiver
Regelkreislauf und hochwertige Endprodukte
mit zuverlässiger Rückverfolgbarkeit.
Ständig steigende Energiekosten und der
Wunsch nach optimaler Ressourceneffizienz
haben sortenreine Produktionsabfälle zu einer
wichtigen Rohstoffquelle für die Metallindustrie
gemacht. Dies gilt insbesondere für Aluminiumschrotte,
denn mit einem Anteil von
etwa 20 Prozent an der weltweiten Gesamtproduktion
hat das Recycling von Aluminium
einen beachtlichen Stellenwert erlangt. Das
liegt insbesondere am enormen Einsparpotenzial:
Verglichen mit der Primärherstellung
braucht man dort im Schnitt 90 Prozent we-
Integrated charge and alloy calculation
makes recycling even more efficient
In order to effectively use and ensure
the quality of aluminium scrap in ongoing
production, optimum calculation of
charge and alloy materials is crucial. This
is often operated as an island solution and
takes time when it comes to setting the
required qualities. Thanks to intelligent
integration into a production management
system, aluminium recyclers can
now optimise their processes at a central
point, thus giving them an edge over
competitors. Now that all the information
is always available everywhere in
real-time, a fast and precise analysis of
the melt can reduce the number of alloying
cycles significantly. In practical
applications, average rates between 1
and 1.5 were in fact achieved. This not
only boosts the throughput rate, it also
improves warehouse management, the
energy balance and purchasing. The result
is a more transparent loop with maximum
productivity and high-quality end products
with reliable traceability.
The persistent rise in energy costs and demand
for optimum resource efficiency have made
sorted produced waste an important source
of raw material for the metals sector. This applies
particularly to aluminium scrap which,
accounting for around 20% of total global
production, has made aluminium recycling
extremely important. This is largely due to
the enormous savings potential. Compared to
primary production, recycling uses on average
90% less energy; far fewer difficult residual
materials are produced and, in terms of quality,
the final product cannot be distinguished
from newly produced aluminium.
On the other hand, it must be noted that
recycling scrap metal is a very complex process
that calls for outstanding organisation along
the entire process chain in order to arrive at
a high-quality, profitable and safe product.
This organisation has been picked up by PSI
Metals, an IT company based in Düsseldorf,
Germany, that specialises in production management
systems for the metals industry. By
integrating the central charge and alloy calculation,
the entire production process can be
optimised.
the optimum combination of input
materials makes all the difference
Regardless of the different sizes, alloys and
soiling of the aluminium scrap – whether it is
externally purchased scrap or scrap metal from
your own production waste which is to be recycled,
the aim is to produce a material that
features the alloy requested by the customer
and which precisely meets the respective requirements
and properties. What’s crucial
here is efficient organisation of the alloying
process based on the charge and alloy calculation.
At the same time, the chemical analysis
of the alloys in the melting furnace is a decisive
factor for the efficiency of the entire production
process. That is because precise measuring
results that have been generated quickly
58 ALUMINIUM · 9/2013