The ULCORED coal based concept is simulated based on the production of syngas using existing coal gasification technology. The shifter gives the option to produce CO2-lean H2 from coal/biomass for in plant use. Large CO2 emissions arise on site from the use of natural gas in heating ovens and from the use of electricity in EAF melting. In the case of these coal based systems, production of "excess gas" to be used as fuel gas in various processes will reduce the CO2 emission for the total site.
ULCORED is the concept suggested by SP 12 to meet the demand of reduced CO 2 emission using iron ore and gas based direct reduction for steelmaking. The concept includes the use of 100 % oxygen, POX (partial oxidation) instead of reformers, shifter for production of CO 2 free reduction/excess gas and the reducing agent being either natural gas or syngas from coal/biomass.
The STEELTEMP® software for heating comes in two main editions, edition I for flat and round products, using a finite-difference 2D technique, and edition III for flat products, using a finite-element (FEM) 3D technique. The 3D code is capable of taking into account non-uniform heating of stocks caused by radiation shadowing from the skid pipes, the contact between the wearer bars and the stocks and end effects in the stocks. The 3D temperature calculations have been verified against trials made in slab pusher furnace No. 2 at SSAB Oxelösund's heavy plate mill and slab walking beam furnace No. 302 at SSAB Tunnplåt's hot strip mill.