Worldwide, around ten million tons of copper scrap are recycled every year. Due to copper’s high value and extensive range of applications, copper scrap recyclingCopper scrap recycling is an important element of the circular economy. The advantages of secondary copper production are considerable. RecyclingRecycling saves up to 85% of the energy required for primary production, resulting in a reductionReduction of approximately 2.1 tons of carbon dioxide per ton of copper. Consequently, recyclingRecycling copper scrap significantly conserves natural resources while lowering carbon emissionsEmission. EmissionsEmission other than CO2 that are particularly important include nitrogen oxides (NOx), sulfurSulfur dioxide (SO2), polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/PCDF), carbon monoxide (CO), and volatile organic compounds (VOCs). These emissionsEmission significantly impact the environment and human health, contributing to air pollution, acid rain, and respiratory diseasesDisease. Controlling them is crucial for improving air quality and protecting the environment. For copper scrap recyclingCopper scrap recycling, SMS group has developed a new generation of tilting refining furnacesTilting refining furnace (TRF), which enable the production of anode copper, fire-refined, high-conductivityConductivity (FRHC) copper, as well as copper granules for copper foil manufacturing. They are designed to re-melt copper scrap in the form of bales, loose scrap, or fines, which may contain impurities such as oil, paint, or plastic. A central part of the refining furnace is SMS’s high-pressure refining system, which produces optimal refining results, including the total volume of organic and inorganic impurities processed, which can make up more than ten percent of the total charge weight. For this purpose, each TRF unit consists of a downstream post-combustion chamber (PCC) with an integrated drop-out chamber (DOC), where the unburned furnace processProcess gases are optimally post-combusted and further treated. This paper presents the off-gas emissionEmission standards that are particularly challenging to adhere to in the copper scrap recyclingCopper scrap recycling processProcess and how the corresponding TRF solution approaches to processProcess gas post-combustion and off-gas treatment are designed using CFD simulationsCFD simulation.