ThyssenKrupp Steel Europe has brought back into operation blast furnace No9 in Duisburg-Hamborn after a complete reline and replacement od part of the cooling system. The facility in the north of Duisburg was taken out of service in Spring 2012. The cost of the invested wasd around €38M and is intended to improve the competitiveness and viability of the site.

The restart will enable the planned reline of blast furnace 2 at Duisburg-Schwelgern next year. How long ThyssenKrupp Steel Europe’s four blast furnaces in Duisburg are operated at technically and economically optimum levels will depend on how the market develops in the future, comments Dr Michael Peters, head of ThyssenKrupp Steel Europe’s hot metal unit.

The previous campaign of BF No 9 lasted 25 years. Originally built in 1962 and revamped and enlarged to its current size in 1987, blast furnace No9 produced around 40Mt of hot metal during this period.

Around 2400t of refractory material was required for the 2012 reline – 1900t for the hearth and 500t for the shaft.
ThyssenKrupp Steel Europe has four blast furnaces in total. Two of them are in Duisburg-Hamborn – the now restarted facility and the newly built blast furnace 8. Conspicuous for its red colour paint, blast furnace 8 went into operation in December 2007. These two units together produce around 3.7Mt/y of hot metal per year. The two blast furnaces 1 and 2 in Duisburg-Schwelgern are roughly twice as big as those at Duisburg-Hamborn and together have an output of roughly 7.7Mt/y.

Blast furnace operators inside the rebuilt No 9 blast furnace