Reduced CO2 emission through designed bio-coal in the residue briquette for the blast furnace (MICO)

Coke use (main source of CO2 emissions in blast furnaces) can be reduced by adding a reactive reducing agent, i.e. biochar.

Background/Motivation

• Coke consumption (main source of CO2 emission in blast furnaces) can be reduced by adding reactive reducing agent, i.e.bio-coal.
• Top charging briquettes(consists of recovered dust from blast furnaces) are optimal in-coming material to mix bio-coal.

Research objectives

• To assess the physical properties and reactivity of biochar, relevant to the mechanical properties and reducibility of the briquette.
• To develop a biochar briquette recipe that achieves high mechanical strength and high reducibility.
• To demonstrate the entire concept chain from biochar production to bio-briquette production for use in a full-scale blast furnace.

Funding: Swedish Energy Agency (2,4 MSEK)
Partners: Luleå University of Technology, Swerim, SSAB, BDX, Harads Arctic Heat AB, Future ECO AB Duration: 2019-2022
Contact person: Kentaro Umeki