Rare earth can be extracted from alumina residue red mud

[China Aluminium Network] Red Mud, a waste residue generated during the alumina extraction process in the aluminum industry due to its high iron oxide content and reddish appearance, is considered a significant environmental challenge. On average, for every ton of alumina produced, around 0.8 to 1.5 tons of red mud are generated. This waste not only occupies valuable land and depletes resources but also poses serious environmental pollution risks and potential safety hazards. Managing this "waste" has long been a pressing issue for the aluminum industry. According to recent reports from the Shanxi Provincial Economic and Information Technology Commission on the 23rd, Shanxi Province has released the Twelfth Five-Year Plan for the Comprehensive Utilization of Red Mud, aiming to achieve a comprehensive utilization rate of 15% to 20% of red mud by 2015. This plan envisions processing over 1.5 million tons of red mud annually. Additionally, the province plans to establish one or two provincial-level research institutes focused on red mud resource utilization, fostering innovation in key technologies and promoting technological and equipment upgrades. These efforts aim to create several demonstration projects and develop three to five industrialization示范基地, while nurturing leading enterprises in red mud recycling. In 2010, Shanxi Province produced 4.315 million tons of alumina, accounting for roughly 14% of China's total production, generating approximately 4.93 million tons of red mud, representing about 10% of China's annual output. Currently, the province’s red mud utilization rate remains below 1%, with a cumulative stockpile of 36.09 million tons stored in open-air dams, primarily constructed using red mud. Notably, the red mud in Shanxi contains relatively high levels of rare earth elements, with antimony concentrations two to three times higher than typical economic reserves. Extracting these valuable resources presents significant economic and strategic opportunities. Several companies, including Shanxi Luneng Jinbei Aluminum and Chinalco Shanxi Branch, have initiated research into red mud utilization technologies, with some products nearing commercialization. The head of the Shanxi Provincial Economic and Information Committee emphasized that during the "12th Five-Year Plan," the province will enhance policy support for red mud recycling, increase financial investments, and launch demonstration projects. By leveraging existing funding channels and investment policies, the province aims to drive advancements in innovative technologies and industrial-scale equipment for efficient red mud management. This initiative reflects a growing commitment to addressing environmental challenges while tapping into the untapped potential of this abundant resource. As Shanxi continues to explore sustainable solutions, it stands at the forefront of transforming a once-wasted material into a cornerstone of future industrial development.

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