Steel Heroes - Koen Meijer



  • 1961 -  present
  • Degree in Mechanical Engineering, Delft Uni. 1987
  • Inventor of the Hisarna Process
  • 6 patents on manufacture of iron and cyclone technology


Started work at Hoogovens R&D in 1987 working on the development of the cyclone iron ore smelting technology (now part of the HIsarna technology).

Moved to a position in Aluminium production in Voerde, Germany in 1999

Manager of the Technology department of Danieli Corus in 2000.

Returned to R&D in 2007 to initiate and develop the HIsarna project in a Consortium of 7 European steelmaking companies. As part of this project the HIsarna pilot plant was built in 2010 and 5 experimental campaigns have been completed since then.

This new technology for producing steel consists of a reactor in which iron ore is injected at the top. The ore is liquefied in a high-temperature cyclone and drips to the bottom of the reactor where powder coal is injected. The powder coal reacts with the molten ore to produce liquid iron that is the base material to produce high quality steel. The gases that leave the HIsarna reactor are concentrated CO2.  The technology removes a number of pre-processing steps and requires less stringent conditions on the quality of the raw materials used. This results in enormous efficiency gains. It reduces energy use and CO2 emissions by 20% and reduces the emissions of fine particles, sulphur dioxide and nitrogen oxide with between 60 to 80%.

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