The former National Steel BOF shop was demolished last week.
The basic oxygen steel making shop with it’s 330 t vessels
operated from 1967 to 2005.
I visited it in 2004.
With the construction of three new steelworks at the end of the 1950s, the Thomas steel making process (Basic-Bessemer) experienced its technical peak and a final blossoming.
Between May 1958 and August 1959, HADIR in Differdange, Phoenix Rheinrohr in Duisburg and Cockerill-Ougree in Liege commissioned a total of 13 converters with tapping weights between 50 and 70 tons.
All of them had been planned and built by DEMAG in Duisburg.
The Thomas steel plant in Liege-Ougree, with its futuristic façade at that time,
will remain the last new construction of its kind in the western world.
Five 56 t Thomas converters and two 1500 t hot metal mixers were put into operation on 4 August 1959 and were supplemented by a 60 t LD-AC converter in 1962.
In December 1975 the Thomas steel works in Liege were shut down.
5 years later the use of the basic bessemer process in the western hemisphere was finally terminated.
One of the lesser-known steel plants is VDM Metal’s melt shop in Unna, Germany.
It was built as a greenfield project in 1972. All smelting activities of Vereinigte Deutsche Metallwerke AG were concentrated there from then on.
In 1989, the Krupp Stahl AG took over VDM. The company became part of ThyssenKrupp in 1999.
Since 2015 VDM is owned by private equity firm Lindsay Goldberg from New York.
VDM Metals Unna operates a 30t, 15 MVA electric arc furnace, three 16t induction furnaces, a vacuum induction furnace and 3 electroslag remelting ovens.
VDM-Metals specialized in Nickel alloys and special alloyed steels.