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| Comprehensive Utilization of Red Mud and Control Techniques of Radioactive Issues |
| HUANG Ying-chao1,2, WANG Ning1, WAN Jun3, LIN Jian1, LIU Bang-yu1,2, GU Han-nian1,2, LI He-ping1, TIAN Yuan-jiang1 |
1. Laboratory for Study of the Earth's Interior and Geofluids, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China;
3. Guizhou Institute of Building Materials Scientific Research & Design, Guiyang 550007, China |
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Abstract Red mud is a type of solid waste generated during alumina production from bauxite.How to dispose and utilize red mud in a large-scale is yet a question with no satisfied answer.This paper reviewed the development and the trend of red mud disposal and utilization,and proposed that the most feasible way to utilize red mud is in the building material field.However,high radioactivity restricts red mud from large-scale application in this field.Chemical composition,mineral composition,and radioactivity analyses for red mud of a Guizhou aluminum plant implied that radioactivity of red mud mainly derived from bauxite and enriched during alumina production.By the end,we proposed a possible way to reduce radioactive by surface modification,gravity selection,electromagnetic selection,and electrostatic separation to isolate radioactive components.
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Received: 23 July 2008
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