50 years of Loesche mills in Turkey - Let’s try again! At the Loesche Seminar in Istanbul, Turkey, on 12 May, around 100 attendees learned about current aspects in compact plant design, the use of alternative fuels, automation solutions and other interesting topics centering on the cement industry. - Article by Anett Fischer, ZKG International

1. At the Loesche Seminar in Istanbul, Turkey, on
12 May, around 100 attendees learned about cur-
rent aspects in compact plant design, the use of
alternative fuels, automation solutions and other
interesting topics centring on the cement industry.
In his welcoming address, Loesche’s Managing
Director, Dr Thomas Loesche, recalled how the first
Loesche mill had gone into operation in Turkey
50 years ago. This anniversary was, he believed,
a good reason, in Loesche’s 110th
year, to hold the
seminar in Istanbul. The company headquartered
in Düsseldorf works systematically on developing
new solutions and was now taking the opportu-
nity to present these to the Turkish customers at
the seminar. He thanked the partners collaborat-
ing at the event, Aumund, Gimas, SchenckProcess,
Atec, Scheuch and Sintek, for their support.
Loesche closed with the words, “We should like to
learn more from you so as to become even better as
we make our way in the cement industry.”
The series of talks were opened by Dr Daniel
Strohmeyer speaking on “Advance grinding tech-
nology and latest developments.” The main aims of
the product development are to adapt the products
at the request of the market as well as to future
market conditions. To meet requirements such as
reduction of TCO and OPEX and raising of plant
availability and flexibility, Loesche has developed
new features. These include a new LDC classifier,
optimized support rollers for cement and slag mills,
master rollers for increasing grinding efficiency
and optimized gas flow. He also explained the
Loesche concept for plants with high capacities and
the new COPE drive.
“Drive selection for large Loesche vertical roll-
ers mills” was the focus of Thomas Fahrland. With
reference to an overview, he pointed out that mill
capacities have steadily increased in recent years.
Fahrland compared three different gear systems
with a conventional drive: EMPP from Siemens/
CEM from Maag, Multiple Drive from Siemens and
the new COPE Drive from Renk/Loesche. He con-
cluded that the new COPE corresponded best to the
needs for low maintenance, high efficiency, active
redundancy, low foundation demand and a good
quality of access.
“The compact cement grinding plant” was dis-
cussed by Philipp Stolzenburg. To optimize the
profit, it was sensible to install the grinding plants
directly where the product is needed. To this end,
the very flexible Compact Cement Grinding (CCG)
plant is a perfect solution: it enables the produc-
tion of all types of cement. With reference to a case
study, he explained the concept of the plant built in
around ten months, for which Loesche also offers
support in the financing.
Dr Daniel Strohmeyer then explained how “Ce-
ments ground in the vertical roller mill fulfil or
even exceed the quality requirements of the mar-
ket”. He compared a ball mill with the vertical roller
mill from Loesche. Possibilities to influence the ce-
ment quality in the VRM are, for example, grind-
LOESCHE SEMINAR, ISTANBUL/TURKEY
50 years of Loesche mills in Turkey –
let’s try again!
TEXT Anett Fischer, ZKG International
1 At the Loesche Semi-
nar in Istanbul, around
100 attendees found
out about new features
in the cement industry
AllAnettFischer

2. ing pressure, height of the dam ring, mill airflow,
classifier speed. With only simple adjustments the
desired product can be archived. Loesche has now
installed VRMs for a cement capacity of approx.
1 000 000 t/day worldwide.
“Service, modernization and upgrading of ver-
tical mills and grinding units” were the focuses
of Robert Koert. Besides technical aspects such as
efficiency, availability and flexibility, increasing
profit is a key factor in modernizations. The ser-
vices offered by Loesche include audits, consulting
and staff training. The company has so far carried
out more than 300 classifier retrofits.
Matthias Mersmann from the Loesche subsidi-
ary aixergee opened the series of talks on alterna-
tive fuels and spoke about “Process optimization
for increased burning of alternative fuels in the ce-
ment industry.” Mersmann presented options for
solid fuels burning and process optimization. For
optimizations, Aixergee models processes and im-
plements its findings in feasible solutions. He pre-
sented a case study of a calciner optimization and
closed with the conclusion: “Cement plants need
permanent optimization.”
Michael Suppaner, ATEC GmbH, spoke on “A
TEC calciner design combining 100 % low-grade
solid alternative fuel utilization and lowest emis-
sions”. The use of alternative fuels was, he ex-
plained, standard in many countries in Europe.
However, with their use, factors such as lower
calorific value, slow combustion, increased vola-
tiles circuits, hazardous emissions and so on had to
be taken into consideration. For a complete parti-
cle combustion, the three main factors (residence)
time, (sufficient) temperatures and (necessary) tur-
bulence have to be harmonized. For this purpose,
ATEC has developed a Calciner Combustion Cham-
ber and so far installed it in ten plants. A Post Com-
bustion Chamber (PCC) – installed at the top of the
calciner – increases the cross-section upstream –
larger unburned fuel particles can remain there.
In his second talk “Preparing the perfect al-
ternative fuel”, Suppaner briefly outlined the use,
set-up and operating principle of the A TEC Rocket
Mill, a mill for preparation of perfect alternative
fuels for the cement kiln burner.
Matthias Authenrieth, Loesche Automation
GmbH, presented standard automation solutions in
his talk “Loesche automations approach to the ce-
ment industry”. For the COPE drive, the following
are offered, for example: frequency drive control
systems for variable speed, specific drive control
system and hydraulic force control system. Oth-
er systems are used in compact cement grinding
plants and mobile coal grinding plants.
In the last talks of the day, the three sponsors
spoke about their services.
Giuliano Cabras, Aumund Fördertechnik GmbH,
presented projects for “Conversion und Retrofits”.
Aumund has so far converted 1168 machines, both
Aumund machines and machines from competi-
tors. In a demonstrative animated film, he showed
how a feeding crusher conveyor could be revamped
by Aumund.
“From weighing systems to complete solutions”
was the heading of the talk by Mesut Akbulut,
Schenck Process. The company offers a multitude
of solutions, like special applications for coal dust,
systems for transport automation and the handling
of alternative fuels.
Closing the seminar, Jai Bordhan, Scheuch
GmbH, presented possibilities for the reduction of
PM, NOx
and VOC. He informed about and com-
pared various possibilities offered by Scheuch for
reducing emission reduction: DeConox, SCR and
SNCR. With DeConox, besides NOx
, NH3,
CO and
TOC can also be reduced. At Kirchdorfer Zement,
Austria, with Deconox technology, NOx
values of
< 200 mg/Nm³
and NH3
values of < 20 mg/Nm³
are
achieved.
www.loesche.com
2 The attendees
discussed current
­applications
3 Aumund, Gimas,
SchenckProcess, Atec,
Scheuch and
Sintek – sponsors of the
event – presented their
companies and products
at an exhibition