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technologie
Relative thermal conductivity measurements via imaging procedures
show the fibre-based board outperforms calcium silicate products,
thus saving on wasted heat and associated energy costs
capital allowances for resourceful machinery
investments. However, one of the quickest
and most cost-effective ways of achieving savings
is by fitting low biopersistent fibre-based
boards in furnaces.
Although calcium silicate is one option,
low biopersistent fibre-based boards almost
always offer the most energy efficient solution.
For example, a typical industrial application
might be a preheating cyclone for cement
manufacture. In recent testing, Morgan
Advanced Materials compared its Superwool
Plus Blok product against a leading brand of
calcium silicate board, covering a surface of
380 m 2 with 80 mm back-up insulation. Results
showed that although calcium silicate
typically has a lower initial
purchase price, the difference
in cost will be repaid over the
course of just seven weeks,
due to the superior energy
efficiency of Superwool Plus
Blok fibre modules. When
the energy-saving difference
between the two materials is
considered over a 12-month
period, the difference in cost
is paid back more than seven
times. Furthermore, Superwool
Plus Blok fibre modules
reduced CO 2 emissions by
190 tpy compared with the
leading calcium silicate board.
When these performance advantages are considered,
alongside other factors such as ease of
handling, on-site fabrication, operator satisfaction
and durability, it is clear that specifiers
are likely to reach a very different decision
on material choice than specifying on initial
purchase cost alone.
About Morgan Advanced Materials
Morgan Advanced Materials is a global materials
engineering company that offers a wide
range of high specification engineered products
with extraordinary properties. From an
extensive range of advanced materials the
company engineers components, assemblies
and systems that deliver significantly enhanced
performance for its customers’ products
or processes. Most are produced to very
high tolerances and many are designed for use
in extreme environments.
The company has a global presence with
over 10,000 employees across 50 countries
serving specialist markets, including the industrial
sectors.
■
Selema präsentiert modernen Späne-Kompaktor
Selema hat einen kontinuierlich arbeitenden
und kontrolliert verdichtenden Späne-Kompaktor
entwickelt, der eine nützliche Ergänzung
beim Barrenfräsen ist.
Beim Fräsen von Walzbarren fallen naturgemäß
große Mengen Späne an, die hohe
Handlingkosten verursachen. Nach eingehender
Analyse von Produktionsprozessen bei
Kunden hat Selema einen Prototyp gebaut, der
sich problemlos in Barrenfräslinien integrieren
lasse und deutliche Vorteile im gesamten
Prozess biete, so das Unternehmen.
Dank der kontinuierlichen Bearbeitung
lässt sich die Anlage klein und kompakt dimensionieren
und die Späne können ohne
Rückstau behandelt werden. Die Trennung
verschiedener Aluminiumlegierungen ermöglicht
ein sortenreines Umschmelzen und damit
die Produktion hochwertiger Legierungen.
Je nach verwendetem Gießsystem verbessert
die kontrollierte Verdichtung die Schmelzausbeute
um bis 40 Prozent. Laut Selema reduziert
die Kompaktierung der Späne (bis zu
99,9%) die Entstehung von Aluminiumstaub,
was geringere Investitionen in den Arbeitsund
Gesundheitsschutz mit sich bringt. Die
Späne werden zu leicht transportierenden
Briketts verdichtet.
Der Späne-Kompaktor weist eine hohe
Selema presents modern chip-compactor
Selema has developed a continuously operating
chip compactor that is a useful addition to
slab scalping lines.
Slab scalping produces large quantities of
chips and these add to operating costs. Selema
says it has carefully analysed customers’ production
processes and developed a prototype
solution that can be simply integrated in slab
scalping lines and offers clear benefits for the
entire process.
Thanks to the continuous mode of operation,
the dimensions of the machine can kept
small while ensuring that chips can be
handled without excessive
build-ups. Separation of the
different aluminium alloys
means remelting is
not limited to the production
of low grade alloys.
Depending on the casting
system used, controlled
compression allows the
melting yield to be increased
by up to 40%. Se- Chip-compactor
Produktivität auf, da nur geringere Wartungsarbeiten
anfallen und somit keine Stillstandszeiten
auftreten. Außerdem verursacht die
Anlage weniger Lärm.
■
lema says the 99.9% compaction of the chips
reduces the generation of aluminium dust and
cuts the cost of measures associated with occupational
health.
The chips are compressed into easily transportable
briquettes. According to the manufacturer,
the chip compactor increases plant
efficiency because it requires less maintenance
and thus reduces downtime. It also reduces
the noise level during production. ■
Späne-Kompaktor
© Selema
54 ALUMINIUM · 5/2013