Coking plant
Reduction
Coke is essential to the production of pig iron. It serves for the reduction of the iron ores into iron and delivers the heat required in the furnace process. The consistency and the carrying capacity of this coke at high temperatures is important for this process.
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Coking oven operation
We produce the largest percentage of our coke needs ourselves in our coking plant. Coking coal is heated up and degassed in large chambers under airtight conditions. Owing to modern environmental protection measures and constant care, such as effective furnace door sealings and the exhausting of gases, our coke oven enterprise is emissions-free as far as is possible.
The still glowing coke from the furnace chambers is quenched with the help of our own developed wet quenching procedure and carried for further cooling on the coke ramps.
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Grading plant
HKM uses more coke than the Huckingen coking plant can produce. In order to obtain a continuous coke quality for the blast furnace process, the produced coke is mixed with imported coke in a grading plant. The coke mixture is stabilized and screened. The fine grade is used in the sintering plant and the lump coal in the blast furnace.
By-products
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Beside coke, gaseous and liquid products develop with the thermal decomposition of the coal. Apart from the coking plant gas, which is used as source of energy in the iron and steel plant and in the RWE power station, black coal crude tar, crude benzene, crude phenol and sulphuric acid are produced.
Overview of the technical data of the HKM coking plant.
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