The book "9th International Symposium on High-Temperature Metallurgical Processing" offers a comprehensive collection of contributions that address the latest advancements and developments in high-temperature metallurgy. In recent years, the metallurgical industry has experienced rapid and successful growth worldwide, with high-temperature metallurgy technology playing a central role in meeting technical, ecological, and economic demands. The contributions in this volume cover a wide range of topics, including the processing of minerals, metal extraction, the production of metallic, refractory, and ceramic materials, as well as the treatment and recycling of slags and waste. Additionally, it also considers energy savings and environmental protection. This work is aimed at academics and professionals working in the metallurgical industry and has the potential to exert a broad influence on the field.