7th European Steel Technology and Application Days - ESTAD 2025

Session

Burden Materials & Quality

2

8 Oct 2025, 11:10

Vivaldi (Palaexpo Veronafiere)

Conveners

Burden Materials & Quality

• Davide Mombelli (Politecnico di Milano - Dipartimento di Meccanica)

Description

1.3.2

345. Sodium silicate impacts on blast furnace operation.

Mr AUGUSTO PEREIRA DE SÁ (VALE SA)

08/10/2025, 11:10

Ironmaking - Blast furnace ironmaking

Oral Presentation

This study explores the main differences between Na and K on the Blast Furnace operation focusing on the effects of Na₂SiO₃. The experimental method involved simulating thermodynamic parameters comparing traditional alkalis oxides, carbonates and silicates. In addition, a technological apparatus was used to describe slag properties and gangue phases at high Na content. The results indicated...

241. Comparison of laboratory tests and HKM blast furnaces on the reduction and carburisation behaviour of burden materials under coke gas injection

Dr Fabian Perret (Hüttenwerke Krupp Mannesmann GmbH)

08/10/2025, 11:30

Ironmaking - Blast furnace ironmaking

Keynote Presentation

Keywords: CO2 reduction, Blast Furnace, Coke Oven Gas, Green steel, Hydrogen containing injectants, Iron oxide reduction

By developing decarbonisation plans, the European steel industry shows its commitment to the European climate change targets. The main element in these plans is a transformation step involving a transition from carbon-based blast furnaces to green hydrogen-based direct...

63. Development of Degradation Model for Sinter Ore Considering Particle Size Distribution

Kazuto Nishihiro

08/10/2025, 11:50

Ironmaking - Blast furnace ironmaking

Oral Presentation

In recent years, reducing CO2 emissions in the steel industry has been demanded from an environmental conservation perspective. As a partial substitute for coke, a reducing agent injected into the blast furnace, the injection of H2 is being considered. The reduction reaction of ore by H2 is an endothermic reaction, and there is concern about a decrease in the temperature inside the blast...

199. Influence of the mineral gangue on pellets softening melting properties in Blast Furnace. Experimental study of phase equilibria during the melting of pre-reduced pellets

Yann Graz (ArcelorMittal research)

08/10/2025, 12:10

Ironmaking - Blast furnace ironmaking

Oral

The progressive decarbonization of the steel industry is being undertaken through the transformation of Blast Furnaces (BF) and by limiting the quantity of coke.
The reduction of coke rates may impact the permeability at the Cohesive Zone (CZ) level, a viscous and impermeable layer resulting from the softening and melting of Iron Ore. The control of this CZ, its shape, thickness, and...