MINERÍA la mejor puerta de acceso al sector minero EDICIÓN 574 / JULIO 2025 8 Innovación Abstract Waelz process is a method applied in the zinc oxide production and is one of the largest sources of carbon emissions within the zinc industry. In this process, zinc containing material (mostly electric arc kiln dust EAFD) is fed at approximately 25 °C and heated up to 1,200 °C where reduction reactions and zinc volatilization take place. The solid carbon used for heating and for reduction reactions is provided mainly by the coke fed with the EAFD in the Waelz kiln. Both chemical composition and physical properties of the coke are important to transportation and to the process. Chemically, it has low ash, low volatile content, and high heat value. Physically, it has high strength. However, the coke is one of the main contributors to greenhouse gas emissions, which have a negative impact on the environment. DESCARBONIZACIÓN DEL PROCESO WAELZ UTILIZANDO BRIQUETAS DE CARBÓN VEGETAL
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