Designed for early-career technicians, furnace operators, and process engineers, this comprehensive course provides a structured exploration of industrial fuel types and their interaction with furnace refractory systems. Beginning with the fundamentals of solid and liquid fuel combustion, learners calculate thermal energy, evaluate fuel performance, and understand the thermomechanical impact on refractory linings. As the course progresses, participants assess advanced degradation mechanisms, refractory wear, and optimization strategies for fuel-refractory synergy. Through simulations, energy calculations, and diagnostic scenarios, the course enables learners to make informed decisions that improve efficiency, safety, and material longevity. Ideal as a foundational series in metallurgical, energy-intensive, and maintenance pathways.