Complete Refractory Solution for DRI Reactors With High Hydrogen Concentration in the Reducing Gas

Direct reduction of iron technologies have proven to have lower CO2 footprint compared to the blast furnace routes and are further moving toward higher hydrogen content in the reducing gas in order to minimize the direct CO2 emissions. High hydrogen concentration in the reducing gas may react with the refractory and change its matrix, impacting its chemical composition, thermal profile and affect the mechanical load-bearing capacities of the refractory linings. This paper reviews the functional requirements of the refractory linings of a DRI reactor with a higher percentage of H2 in the reducing gas and recommends optimum total solution.

Sangram Mohapatra | Calderys
 

Bertrand Hiot | Calderys France
 

Bruno Touzo | Calderys