Assessment of concentrateConcentrate smeltingSmelting within the reaction shaft of a Flash Converting FurnaceFlash converting furnace (FCF) was performed using Computational Fluid Dynamics (CFDComputational Fluid Dynamics (CFD)). Hatch has previously published content relating to CFDComputational Fluid Dynamics (CFD) techniques for assessments to evaluate Flash Smelting FurnacesFlash smelting furnace (FSFs) and Direct to BlisterBlister FurnacesFurnace (DBFs). This paper extends previous assessments to evaluate a ‘typical FCF’ from a gas and particle flow perspective using a custom built CFDComputational Fluid Dynamics (CFD) modelModel. The CFDComputational Fluid Dynamics (CFD) modelModel was compiled in ANSYS CFX 2024 utilising custom multi-phase (solid/gas) combustionCombustion reactions for copper matteCopper matte particles. The CFDComputational Fluid Dynamics (CFD) approach provides valuable input into: gas flow dynamics, combustionCombustion particle behaviour, particle residence times, plume shaping, concentrateConcentrate burner designDesign, location and extent of furnaceFurnace wall coolingCooling, and furnaceFurnace geometry (including shaft and freeboard volumes). The analysisAnalysis summary of a ‘typical FCF’ is presented within this paper and the analysisAnalysis tools used can be applied by Hatch to any operating FCF to assess currentCurrent/future process conditions and upgrades.