New spinning mill saves considerable amount of energy
The current rotor spinning system
consumes 45% less energy than
in 1987
Modern rotor spinning machines
­facilitate savings of up to 25 % energy
compared to an old spinning mill.
­The spinning industry belongs to
those industries that require a great
deal of energy. It is therefore even
more important to implement develop­
ment concepts in the construction
of textile machines which reduce the
energy consumption per kilogram
of yarn.
A modern Rieter rotor spinning facility
(fibre preparation to rotor spinning
machine) consumes 45 % less energy
than a mill of year 1987. Rotor spinning
machines are big energy consumers
with an energy consumption of 0.3
to over 1.5 kWh for every kg of yarn.
This is less than with other spinning
systems but depending on the yarn
count still represents 22 – 34 % of the
yarn manufacturing costs. The spin­n­
ing machine crucially determines the
energy footprint along the textile
value chain. The application of modern
rotor spinning technologies sustainably
reduces the energy consumption of
the worldwide textile production.
Furthermore, the modern technology
can make an appreciable contribution
to easing the power supply situation
in the industrially emerging regions.
The initial situation:
With 18 year-old machines a large
rotor spinning mill in the USA
produces approx. 88 000 tons of
yarn annually. With ongoing modern­
isations, the spinning mill has com­
petitively maintained the quality of
the yarns, but was nonetheless unable
to lower the energy consumption.
As the energy costs in the USA are
relatively low, the focus has not been
on the energy consumption so far.
As a result of the discussion on a
sustainable production, this focus
has changed.
Contact:
Rieter Machine Works Ltd.
Edda Walraf
Head Marketing Machine & System
+41 52 208 8224
[email protected]
Modern R 60 rotor spinning mill
“Worldwide, 8.5 million rotor spindles
are installed. They produce almost
10 million t yarn per year. The rotor
spinning mills worldwide consume
more than 2 500 MW electric power.
The average age of the installed
capacities is 12 years (oldest 25 years).“
Edda Walraf,
head of marketing
The solution – sustainable technology:
The current rotor spinning technology
from Rieter has been consistently
developed in the direction of higher
productivity and lower energy con­
sumption. The improved spinning
technology allows the same yarn
quality to be produced with less twist
and smaller rotors. This increases
productivity and saves energy. Further­
more, the drive componenents have
been optimised. Even more spinning
positions with lower individual energy
consumption are concentrated with
minimum space requirements in
one machine. The consequence: The
energy consumption per kilogram
of yarn is reduced.
The American rotor spinning facility
previously cited is now modernised.
The result: With the new equipment
a significantly increased productivity
with higher and more uniform quality
than before has been achieved. And
this with up to 25 % lower energy
consumption.
Facts: R
eduction of the specific energy
consumption of the mill by 25 %.
I mprovement of the yarn quality in
respect of tenacity and uniformity.
M
ore efficient use of raw textile
materials.
I ncrease in productivity of approx.
20 % (yearly 300 tons per machine)