倍半氧化物在磷矿中赋存状态及分选方法研究进展  

Research progress on occurrence state and separation method of sesquioxides in phosphate ore

作　　者：蔡忠俊 杨稳权[1,2] 何海涛 张华[1,2] CAI Zhongjun;YANG Wenquan;HE Haitao;ZHANG Hua(Yunnan Phosphating Group Co.,Ltd.,Kunming 650600,China;National Engineering Research Center of Phosphorus Resources Development and Utilization,Kunming 650600,China)

机构地区：[1]云南磷化集团有限公司,云南昆明650600 [2]国家磷资源开发利用工程技术研究中心,云南昆明650600

出　　处：《中国矿业》2023年第12期219-225,共7页China Mining Magazine

摘　　要：本文概述了磷矿中主要的杂质倍半氧化物(R2O3)赋存状态、规律及对下游生产的危害,论述了倍半氧化物的分选方法及研究进展。随着资源日益贫乏,磷矿浮选精矿中倍半氧化物含量上升会造成磷矿分解率下降、酸解反应活性降低,导致下游磷化工生产磷酸产品质量下降、管道结垢、输送困难等问题,亟需不断研究新的磷矿倍半脱除方法。目前脱除的方法主要有浮选分离、磁浮、分级浮选等联合浮选、化学分离等方法。浮选可以有效脱除一部分的倍半氧化物含量,未来研究方向主要是开发更有选择性和针对性的脱铁、铝的药剂;磁浮分离主要用来脱除磷矿中的铁质脉石矿物含量较高的矿物,分级浮选则多用于黏土矿物较多的磷矿;化学法则主要针对铝质脉石矿物进行处理,溶剂萃取法是未来除铝的主要研究方向。无论是浮选还是化工的方法,单一方法很难处理磷矿石至合格磷精矿的要求,因此,浮选与下游化工行业的联系将更加紧密。In this paper,the harm,occurrence and rule of the main impurity sesquioxide(R2O3)in phosphate ore to the downstream production are summarized,and the separation method and research progress of sesquioxide are discussed in detail.With the increasing scarcity of resources,the increase in the content of sesquioxides in the flotation concentrate of phosphate ore will lead to the decrease of the decomposition rate of phosphate ore and the decrease in the activity of acid hydrolysis reaction,which will lead to the decline in the quality of phosphoric acid products produced by the downstream phosphorus chemical industry,the scaling of pipelines and the difficulty of transportation,and so on.It is urgent to constantly study new methods of phosphorus ore semisoft removal.At present,the main methods of sesquioxide removal include flotation separation,maglev flotation,fractional flotation and other combined flotation methods,chemical separation and so on.Flotation can effectively remove part of the content of sesquioxide. Future research direction is mainly to develop more selective and targeted agents for removing iron and aluminum. Maglev separation is mainly used to remove iron gangue minerals in phosphate ores, and fractional flotation is mainly used for phosphate ores with more clay minerals. Chemical law is mainly aimed at aluminum gangue mineral treatment, solvent extraction method is the main research direction of aluminum removal in the future. Whether flotation or chemical methods, a single method is difficult to deal with the phosphate ore to qualified phosphorus concentrate requirements, so the flotation and downstream chemical industry will be more closely linked.

关 键 词：倍半氧化物 浮选 化学分离 联合选矿 

分 类 号：TD97[矿业工程—选矿]