Per: BRENO TOTTI MAIA (LUMAR METALURGICA LTDA), Alisson paulo de oliveira (NSigma Consulting LTD), cristovão nery giacomin (soft Sider S/a), Reanta dias silva e souza (Soft Sider S/A), andre luiz fraga (Soft sider S/A)
Abstract:
Driven by increasing sanctions on CO2 emissions and the incentives outlined in the American Inflation Reduction Act, steelmakers and investors are seeking ways to produce steel with the lowest possible environmental impact, at a lower cost and with minimal investment. However, despite its emissions, steel is also essential for modern life. It's in cars and buildings, kitchen utensils, etc. Nearly two billion tons are produced annually worldwide, emitting nearly twice that volume in CO2. A significant portion of this CO2 is generated in BOF steelmaking, during both primary refining and, to a lesser extent, secondary refining. This study demonstrates the results of simulations using the Thermo Balance LD® primary refining simulation software (which operates during the steel blowing and casting stage) to calculate carbon emissions based on different alloy designs. This simulation involves altering carbon content by substituting manganese with microalloying elements in six different scenarios. Boundary conditions for the simulation were inferred from classic raw material data, varying the composition of the base steel, which is the product of primary refining. This is an innovative approach to how to associate alloy design with GHG emissions which can be used by steelmakers for the design and production of more environmentally friendly alloys.