Red mud is a strong alkaline solid waste in the form of reddish-brown powder mud produced in the process of producing alumina from bauxite. It belongs to Class II solid waste. Its resource utilization is difficult and the environmental risk is high, which seriously restricts the oxidation of the world. The healthy development of the aluminum industry. As a major producer of alumina, China will produce more than 120 million tons of red mud in 2021, with a cumulative stockpile of 1.6 billion tons, accounting for one-third of the world’s stockpile, but the comprehensive utilization rate is less than 10%. During the “Twelfth Five-Year Plan” and “Thirteenth Five-Year Plan” period, the goal of comprehensive utilization of red mud in my country has not been achieved. During the “14th Five-Year Plan” period, this goal has been regarded as an important task to promote the green development of the industry.

Guizhou Institute of Technology and Guizhou Provincial Key Laboratory of Metal Material Preparation Technology cooperate with enterprises to innovate collaboratively, fully mobilize and stimulate the main role of enterprises in industrial technology innovation, establish industrial technology research centers for comprehensive utilization of red mud in enterprises, and gather innovative elements to promote my country’s Red mud is harmless, recycled, and utilized on a large scale, and at the same time, technical research on the transformation of Class II solid waste into Class I solid waste is carried out.
The research center takes the utilization of red mud for road engineering with large volume, long line and wide area as the research object, focusing on scientific research and industrial promotion, and has formed a complete set of technology for the production and construction of Bayer red mud cement accelerator. As a building material, the accelerator can replace the traditional cement stabilized gravel base and cement concrete pavement, and pilot industrial applications have been carried out in Guizhou, Shandong, Guangxi and other places. The strength, radioactivity, destructiveness and other tests and long-term monitoring have fully verified its economy, superiority and safety. In particular, the red mud cementitious material was used as a road surface to replace 30% of the cement in the connecting line in Guizhou Province, breaking through the international standards. Scholars can replace the maximum level of 20% cement, and the performance of the pavement in the test section is better than that of the cement concrete pavement.
The technology won the 2022 China International Big Data Industry Expo Leading Scientific and Technological Achievement Award “New Technology”, which has reached the international leading level. It can quickly consume red mud stock by building roads, reduce the pollution of soil and water bodies caused by stacking, and reduce the safety risk of tailings , It can also turn waste into treasure, reduce sand and gravel mining, and at the same time, as a low-carbon carbon-fixing material, it can make positive contributions to helping my country achieve the “3060” goal.