Title

THE HISARNA IRONMAKING PROCESS

THE HISARNA IRONMAKING PROCESS

Authorship

MEIJER, KOEN; ZEILSTRA, CHRISTIAAN; TEERHUIS, COR; OUWEHAND, MAARTEN; DRY, ROD; PILOTE, JACQUES

MEIJER, KOEN

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ZEILSTRA, CHRISTIAAN

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TEERHUIS, COR

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OUWEHAND, MAARTEN

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DRY, ROD

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PILOTE, JACQUES

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DOI

10.5151/2594-357X-22715

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Abstract

The HIsarna ironmaking process can use coal and fine ores directly and therefore doesn’t require coking and ore agglomeration. The HIsarna concept is created by combining smelt cyclone technology of Tata Steel with the bath smelting technology of HIsmelt (Rio Tinto). The HIsarna development is part of the ULCOS project (Ultra Low CO2 Steelmaking), a joint initiative of the European steel industry. The HIsarna process has the potential to reduce CO2 emissions per ton with 20 to 80 %. Reduction with 80 % requires geological storage of CO2. Because the HIsarna process operates with pure oxygen the off gases are practically nitrogen free. This makes the process well suited for CO2 storage. The process can use more economically priced raw materials such as non coking coals and iron ores outside the quality range for blast furnace ironmaking. For instance iron ores with high levels of sulphur, phosphor, zinc, titanium or alkalines can be applied in the HIsarna process. Therefore the process can offer economic benefits as well as environmental benefits.

The HIsarna ironmaking process can use coal and fine ores directly and therefore doesn’t require coking and ore agglomeration. The HIsarna concept is created by combining smelt cyclone technology of Tata Steel with the bath smelting technology of HIsmelt (Rio Tinto). The HIsarna development is part of the ULCOS project (Ultra Low CO2 Steelmaking), a joint initiative of the European steel industry. The HIsarna process has the potential to reduce CO2 emissions per ton with 20 to 80 %. Reduction with 80 % requires geological storage of CO2. Because the HIsarna process operates with pure oxygen the off gases are practically nitrogen free. This makes the process well suited for CO2 storage. The process can use more economically priced raw materials such as non coking coals and iron ores outside the quality range for blast furnace ironmaking. For instance iron ores with high levels of sulphur, phosphor, zinc, titanium or alkalines can be applied in the HIsarna process. Therefore the process can offer economic benefits as well as environmental benefits.

Keywords

Ironmaking; Smelting reduction.

Ironmaking; Smelting reduction.