尾矿干堆及脱水工艺研究应用与展望

 为更好地应用尾矿干堆技术,推动中国尾矿处理技术的发展,在Ei数据库和中国期刊全文数据库中对尾矿干堆的相关文献进行检索统计的基础上,对国内外尾矿干堆技术的应用现状及研究进展进行了综述性研究.分析了国内外尾矿干堆的应用,列出了相关实例,得到了尾矿浓度及降雨对干堆工艺的影响;探讨了采用干堆法的原因,对其优势和局限性进行了概括,比较分析了国内外尾矿干堆的联系和区别.对尾矿干堆的关键技术脱水工艺的现状进行了总结,认为尾矿压滤、尾矿浓缩—压滤/过滤和尾矿分级—浓缩—压滤是目前最常用的3种脱水工艺,并对其脱水设备作了简要描述.对目前尾矿干堆技术存在的技术和管理问题进行了分析,最后对尾矿干堆技术的应用前景进行了预测和展望.

Applications and Prospects of Dry Tailings Disposal and Dehydration Technology

In order to apply the dry tailing stacking technology better and promote the development of the tailings disposal technology, the papers on the dry tailings disposal in the Database of Ei Compendex and Chinese Academic Periodical Full Text are searched and analyzed by using statistics methods, and based on the analysis, the application status and the research progress of the dry tailings disposal technology at home and abroad are reviewed, with examples, including the effects of the tailings concentration and the rainfall on the dry heaping of tails and the priciples, advantages and limitations of the dry tailings disposal. The domestic dry tailings disposal is compared with that in other countries. The present situation of the dehydration technology and the key technology of the dry tailings disposal are also reviewed. The tailings pressure filtration dehydration technology, the tailings thickening-pressure filtration/thickening-filtration dehydration technology and the tailings classifying-thickening- pressure filtration dehydration technology are considered as the three most commonly used dehydration technologies. The related dewatering equipment is briefly discussed. The technical and management issues on the current dry tailings disposal technology are analyzed. At last, the future prospect for the application of the dry tailings disposal is suggested.