中低品位磷矿前处理技术的研究进展

Research progress on pretreatment technology of medium-and low-grade phosphate rock

主要介绍了中国中低品位磷矿前处理的紧迫性、重要意义及前处理技术方法种类、发展现状、存在的主要问题,针对所存在的问题,提出了中低品位磷矿硝酸铵-硝酸混合法前处理技术及其基本过程、优势,为中低品位磷矿开发利用提供了一条合理可行的途径,同时提出了硝酸铵-硝酸混合法在含磷尾矿中的拓展应用意义,为进一步解决磷资源枯竭、环境污染等问题,找到了一个可取的发展方向。

Urgency and important meaning on pretreatment of medium-and low-grade phosphate rock,as well as technical method species on pretreatment,present status,and existentially principal problems on pretreatment technology of mediumand low-grade phosphate rock in China were introduced.The basic process and merits of ammonium nitrate-nitric acid mixturemethod in pretreatment technology of medium-and low-grade phosphate rock were put forward,thereby a feasible route for exploitation and utilization of medium-and low-grade phosphate rock was provided.At the meantime,continuation application meaning of ammonium nitrate-nitric acid mixture-method on phosphorus ore tailing was put forward. For more solving the problems of phosphorus resources depletion and environmental pollution etc.,a good development direction was found.