Page 17 - Steel Tech India eMagazine Volume January 2021

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with virtually no carbon. ArcelorMittal commissions
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based steel production in Hamburg. Salzgitter AG and
Tenova signed a Memorandum of Understanding for
the pursuit of SALCOS project for CO -reduced Steel
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Production based on hydrogen.
In step with its peers, Tata Steel has also collaborated
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consumption, operating parameters and with Council
of Energy, Environment and Water (CEEW) to gauge

Fig. 5: A comparison on the carbon intensity of each future availability and pricing of Natural Gas.
technology versus the expected years for its maturity HIsarna
A direct reduced iron process for iron making in which
Tata Steel has initiated projects to capitalise on iron ore is processed almost directly into liquid iron (pig
this technology through separate projects i.e. CO
2 iron).
separation @ 5 TPD piloting & 500 TPD commercial
scale, feasibility study on N Separation from BF Advantages of HIsarna:
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gas in collaboration with CSIR and feasibility study Ŗ 5KPVGT RNCPV RGNNGV CPF EQMG RNCPV PQV PGGFGF NQYGT
Syngas (CO+ H ) injection on BF. The Fig. 5 gives us a NCPF HQQVRTKPV CPF %#2':
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comparison on the carbon intensity of each technology Ŗ %1 GPTKEJGF ƀWG ICU GPCDNKPI ECRVWTG TGCFKPGUU
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versus the expected years for its maturity. Possibility to reduce CO emissions by 80% when
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TGR appears to be a promising technology and needs coupled with CCU/S
to be considered to any future expansions. Ŗ .QYGT 51Z 0QZ HWIKVKXG FWUV GOKUUKQPU

Gas-based Direct Reduced Iron (DRI) Ŗ 2TGOKWO UVGGN ITCFGU YKVJ WNVTC NQY RJQURJQTWU
Direct reduced iron (DRI), also called sponge iron, is Ŗ 2NCPU HQT GZGEWVKPI NQPIGT ECORCKIPU YKVJ UVGGN
produced from the direct reduction of iron ore (in the scrap, biomass and natural gas injection - reduce
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gas or elemental carbon produced from natural gas Ŗ 'PCDNGT HQT TGE[ENKPI .& UNCI CU ƀWZKPI CIGPV
or coal. Critical to this application is the availability The 0.1 Mtpa rated capacity pilot plant is in operation
of gas network. This technology is at a much higher at IJmuiden and trials are being done for charging
Technology Readiness Levels and can be quickly scrap and biomass. Though HIsarna is considered
implemented, except for the constraint due availability one of the most promising developments in reducing
of natural gas/hydrogen infrastructure. CO emissions from the steel industry, yet it is not one
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refractory, design aspects, cooling circuit, etc.
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- CFD modelling, heat and mass balance, design
calculations, etc.
Hydrogen – Key to a Low Carbon Economy
Considering 1.5°C or 2°C pathway by 2050, hydrogen
would consistently play a critical role as an energy
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by hydrogen by 2050*, requiring a new zero-carbon
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next 30 years from 10 EJ to 78 EJ.
Fig. 6: CO footprint
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STEEL TECH 15