ILVA SPA, TARANTO, ITALYREVAMPING SINTER COOLER

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REVAMPING SINTER
COOLERUNIQUE COOLERCHARGING SYSTEM
AND COOLER HOOD
DESIGNACHIEVED RESULTS• Increased cooling efficiency and therefore
lower sinter discharge temperature by- Increased cooling area
- Optimized segregation of charged sinter		 due to new patented charging chute- Reduced air leakage• Optimized hot air temperature to waste heatrecovery system by design of cooler hood
• Reduced dust emissions by- Reduced air leakage- Covering the usually open cooling area		 with a special hood

By installing a special hood covered with expanded metal an optimized solution for efficient cooling and minimized dust emissions was achieved.

THE CHALLENGE

THE SOLUTIONSCOPE OF SUPPLYIn November 2011 Primetals Technologies received an orderfrom the Italian steel producer ILVA to modernize the sintercoolers of the company’s No. 4 and No. 5 sinter plants. The
target of this modernization project, which was completed
in May 2014, was to increase the cooling efficiency of theexisting sinter coolers and to minimize dust emissions.

The patented Primetals Technologies design of the cooler
charging chute has been provided, as an optimized
segregation of the sinter particles across the sinter bed
increases the efficiency of the cooling system. To raise theefficiency of the sinter coolers, the cooling area has been
increased, a new cooling air fan has been installed andthe sealing between the cooler channel and pallets has
been improved. Furthermore a new cooler hood which isinsulated on the inner side has been installed to improvethe efficiency of the waste-heat recovery system. For
minimizing dust emissions at Ilva the usually open area ofthe sinter cooler has been covered with a special cooler
hood.

• Design and installation of a new patented charging chute

THE CUSTOMER
Name. Ilva S.p.A.
Location. Taranto, Italy• Installation of an optimized sealing system and newspillage pans
• Redesign of the cooler hoods to minimize dust emissions
and to improve the efficiency of the waste heat recoverysystem• Supply of a new cooling air blower• Elongation and splitting the cooler channel

With an annual production capacity of over eleven
million tonnes, the Ilva steel plant in Taranto is thelargest in Europe, accounting for some 30 percentof the steel used in Italy. The two sinter plants,
which were modernized and extended by Primetals
Technologies in 2001, can produce up to eleven
million tons of sinter per year.

PLANT DATA
Sinter area
Cooling area

473 m²
approx. 440m²

Main diameter

40 m

Width of trough

4.0 m

Height of cooler bed

1.5 m

Heat recovery system

27 % of cooling area

Discharge temperature aftercooler

max. 120 °C(< 100 °C obtained)

Hot air temperature toWHRS

min 350 °C

The patented design of the cooler charging chute leads to an optimized segregation of the sinter particles across the sinter bed aftermodernization.

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