THE YEAR-BOOK OF THE COKE OVEN - Coke-oven-managers.org

The advantages of such big chamber volumes are the reduction of capital
and operation cost, optimization of environmental issues and the extension
of lifetime. A comparison of these items is shown in table 1. All figures
refer to a coke production of 2 million mt / year with typical oven heights
of 4.3m respectively 6m and common volumes in comparison to 7.6m high
ovens with a volume of 76m³. By applying the 7.6m-concept a reduction of
capital cost is influenced by less oven units, less space on site and less sets
of oven machines required. Less operation teams are required, which leads
to an optimization of operation cost. Even more than 2 million mt of coke
can be produced with on set of machines and one operation team,
demonstrated at coking plant Schwelgern producing more than 2.6 million
per year since 2003 for the blast furnaces of ThyssenKrupp Steel in
Duisburg, Germany 4 . The specific manpower at Schwelgern counts to 106
people per million mt. The former batteries produced the same amount of
coke with a specific manpower of 336 people per million mt. In a longterm
consideration it is also the expected lifetime of a battery that takes an
influence on the cost situation.
60
50
40
30
20
10
0
1900
tons of coke per oven
13 m³
32 m³
1920
1940
39 m³
1960
5
53 m³
1980
76 m³
2000
94 m³
useable chamber volumes
Figure 4 Development of Chamber Volumes - History