Influence of the natural aluminium oxide layer on ... - ALU-WEB.DE

New: Hot air heating system
for industrial applications
promeos <strong>of</strong>fers a compact and mobile, robust
and modular hot air heating system for industrial
applications – to be used for drying, preheating,
tempering or whatsoever.
Fig. 6: Heating system for filterboxes
Operating mode: The exhaust gases <strong>of</strong> <strong>the</strong>
central burner are mixed with secondary air in
a compact mixing chamber inside <strong>of</strong> <strong>the</strong> heating
system. While <strong>the</strong> burner control defines
<strong>the</strong> heat capacity, <strong>the</strong> air (heating) temperaure
can be controlled by <strong>the</strong> ratio <strong>of</strong> exhaust
gas and secondary air mass flow (see Fig. 8).
The hot air is <strong>of</strong>fered as point source, line
source, area source or 3D source using different
nozzles, almost unlimited applications
flexibility, which was only known from electrically
heated blowers up to now.
Fig. 7: Heating system for launders
MELTING, RECYCLING & HEAT TREATMENT
promeos <strong>of</strong>fers ‘gas heat in electric quality’
without <strong>the</strong> existing shortcomings <strong>of</strong> electrical
hot air guns such as limited temperature,
limited power density or limited lifetime due
to unsatisfying robustness.
The hot air heating system from promeos
is designed even for rough boundary conditions,
such as steel plants and foundries etc..
It is both robust and compact and can be used
stationary and as mobile heat source. A crane
Fig. 8: Operating range <strong>of</strong> <strong>the</strong> hot air heating system for industrial applications
hook and transportation wheels enables <strong>the</strong>
user to move it quickly where it is needed.
Benefits: While <strong>the</strong> cost saving potential
<strong>of</strong> 50% through substituting electrical energy
by gas is self-arguing, a CO 2-reduction <strong>of</strong> more
+ no loss <strong>of</strong> temperature / no freezing <strong>of</strong> <strong>the</strong>
melt
The extremely uniform heating <strong>of</strong> <strong>the</strong> refractory
surface and <strong>of</strong> <strong>the</strong> filters prevents an uncontrol-
led cooling <strong>of</strong> <strong>the</strong> melt.
+ no overheating <strong>of</strong> <strong>the</strong> furnaces The heat loss from <strong>the</strong> furnace to <strong>the</strong> casting station
can be reduced / prevented so far, that an
unwanted overheating <strong>of</strong> <strong>the</strong> furnaces can be
avoided.
+ increased durability <strong>of</strong> <strong>the</strong> refractory materials So called ‘hot spots’ that are due to local fire
or flames as well as <strong>the</strong> non-uniform heating <strong>of</strong>
<strong>the</strong> launders and filters are completely avoided.
Thereby <strong>the</strong> <strong>the</strong>rmo-mechanical loading is significantly
reduced and <strong>the</strong> lifetime <strong>of</strong> <strong>the</strong> material
is increased.
+ reduced energy consumption An overheating <strong>of</strong> <strong>the</strong> furnaces is not necessary.
+ increased product quality The material is melted, prepared, transported and
casted at an optimum metallurgical temperature.
+ lower costs The saving <strong>of</strong> energy costs and <strong>the</strong> avoidance <strong>of</strong>
‘warm casting / tapping’ lead to lower operating
costs without plant down-times and thus to higher
productivity.
Σ ROI < 24 months, guaranteed
< 12 months, mostly
Table 3: Heating <strong>of</strong> launders and filterboxes: benefits / value proposition
than 60% in Germany and most world markets
is worth to be mentioned.
promeos has set new standards in pre-
heating solutions for <strong>the</strong> casting industry.
Based on its unique combustion technology,
promeos developed from a technology supplier
to a reliable system manufacturer and
service supplier. Energy efficiency, product
quality and process reliability were and are
<strong>the</strong> driving force. Future subjects in product
development focus on a new type <strong>of</strong> melting
and tempering furnace and fur<strong>the</strong>r energy
efficiency improvements including internal
energy recovery by combustion air preheating.
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Usually your investment is recovered within a
period <strong>of</strong> max. 12 months. We will compile you
with a detailed amortization calculation with
every <strong>of</strong>fer you receive from us.
ALUMINIUM · EAC CONGRESS 2011 65