|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Alumina & Bauxite
||Comprehensive Utilization of Red Mud: Current Research Status and a Possible Way Forward for Non-Hazardous Treatment
||Zhang Ting'an, Yanxiu Wang, Guozhi Lyu, Yan Liu, Weiguang Zhang, Qiuyue Zhao
|On-Site Speaker (Planned)
Red mud is an alkaline solid waste produced in the process of alumina extraction from bauxite. Presently, more than 3.0 billion tonnes of red mud are estimated to be stockpiled on land with an annual growth rate of approximately 120 million tonnes. The great amount of red mud has become a very real threat to environment and human health because its high alkalinity is a potential pollution to water, land and air. This article provides an overview of current research status for red mud comprehensive utilization and attemps to review their strengths and weaknesses. Ideally red mud is encouraged to be utilized as an industrial by-product for other applications, leading to a zero-discharge situation. Under this consideration, the review recommends Calcification-Carbonization Method, a promising technology for non-hazardous treatment, to recover the alkali and alumina and meanwhile transform the red mud into a non-hazardous and available form for subsequent use.
||Planned: Light Metals