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Comment Sustainability

Blast-furnace technology aims for carbon neutrality

By Gerald Ondrey |

Primetals Technologies, Ltd. (London, U.K.; www.primetals.com) and thyssenkrupp AG (Essen, Germany; www.thyssenkrupp.com) have signed an exclusive, worldwide cooperation agreement that sees both parties commit to bringing the Sequence Impulse Process (SIP) technology to the market. The SIP technology has been developed by thyssenkrupp AT.PRO tec GmbH, a company of thyssenkrupp Materials Services GmbH (www.thyssenkrupp-materials-services.com), and is well established for use in foundry cupola furnaces. The underlying principles of this proven technology have been adapted and specifically tailored to the blast-furnace process. To prove the technology, thyssenkrupp Steel Europe has installed the first ever full system on their blast furnace #1 at Schwelgern, Duisburg in Germany (photo). Blast-furnace operators can conventionally lower operating costs through injection of alternative fuels with the hot-air blast (most commonly pulverized coal) in order to reduce the required coke rate in the burden. Additional O2 enrichment is required to promote combustion for the added fuel. While benefiting the economic aspects for the furnace, this also results in a number of process and operational challenges. Combustion of the fuel localized in…
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