氧化铝赤泥放射性及其屏蔽机制研究现状

分析了困扰赤泥资源化利用的主要原因，即高碱性和高放射性。着重讨论了赤泥放射性的来源和屏蔽技术的研究现状。指出赤泥的资源特性、赤泥中碱的富集和脱除机制、赤泥的天然放射性、赤泥的活性特征以及赤泥在建筑材料领域的安全应用途径等已经取得一些可喜的研究成果，而对于赤泥中放射性核素的富集机制和放射性屏蔽方法的研究仍处于起步阶段。为了从本质上解决赤泥放射性带来的应用困境，结合笔者的研究，提出了降低赤泥放射性的研究思路，以促进氧化铝赤泥在建筑材料领域的资源化利用。

Research status of radioactivity and shielding mechanism of alumina red mud

The main causes of resource utilization problems of red mud，i.e.high alkalinity and high radioactivity，were analyzed.The research status of radioactivity sources and the shielding technology of red mud were mainly discussed.A large number of literature studies have made some gratifying results about red mud in the fields of resource characteristics，enrichment，and removal mechanism of alkali，natural radioactivity，activity，and safety application ways as building materials.Even so，the study on the enrichment mechanism and shielding method of radio-nuclides is still in the starting phase.In order to get rid of the dilemma caused by radioactivity of the red mud to promote the resources utilization in building materials，the solutions to the above problems according to the author’s research were put forward systematically.