赤泥等工业固废实现高效协同利用

Core Insights - The project "Research and Application of Comprehensive Utilization of Industrial Solid Waste Materials such as Red Mud" has received the second prize for outstanding scientific research achievements in engineering technology from the Ministry of Education for 2025, marking a significant technological breakthrough in the resource utilization of red mud in China [1][2] - The project addresses the global challenge of sustainable development in the aluminum industry by introducing an innovative model for the comprehensive utilization of red mud, which is a highly alkaline solid waste produced during alumina production [1] Group 1 - Red mud is characterized by its high iron content and complex composition, making its resource utilization challenging and posing environmental risks when stored traditionally [1] - The project team has developed a new model of "source reduction + high-value transformation," overcoming key technical bottlenecks such as low cementitious activity and harmful ion migration [1] - The technology enables the efficient collaborative utilization of red mud with other industrial solid wastes like coal gangue and fly ash, achieving a total incorporation rate of 95% in the building materials produced [1] Group 2 - The technology has been successfully demonstrated in a road engineering project at a red mud storage site in Xing County, Shanxi, resulting in the construction of a 3.2-kilometer red mud-based road [2] - The project has led to a 20% reduction in construction costs, with the road showing no settlement or cracking after five years of use, while also exhibiting excellent environmental performance and durability [2] - Experts in the industry have evaluated the overall results as reaching an internationally leading level, providing core technical support for large-scale comprehensive utilization of red mud in China [2]