云南硅质型磷矿的物化性质和选矿研究  

Study on physico-chemical characteristics and mineral separation of Yunnan siliceous phosphate rock

作　　者：刘萍[1] 刘瑾[1] 李军[2] 罗建洪[2] 

机构地区：[1]西南石油大学化学工程学院,四川成都610500 [2]四川大学化学工程学院,四川成都610065

出　　处：《磷肥与复肥》2011年第4期66-68,70,共4页Phosphate & Compound Fertilizer

基　　金：国家科技支撑计划(2007BAE58B01)资助项目

摘　　要：在分析云南硅质型磷矿物化性质的基础上,研究适合该类矿石的选矿分离方法。分析结果显示,该矿主要含氟磷灰石、石英,镁含量较低,石英晶体与磷灰石晶体交互存在,有部分碳酸根参与了磷灰石晶格的组成。同时发现磷和酸不溶物的含量随粒径的不同而不同,因而该矿可通过磨矿筛分的方法达到初分的效果,对其中粒径>300μm的磷矿P2O5已达富矿水平,可直接使用;低品位细粒径(<76μm)矿石采用浮选法进一步分离磷灰石和石英,碱性环境下,选择十二胺作为该矿的捕收剂更有利于该矿的浮选,可使精矿中P2O5的含量提高近5百分点。Based on physicochemical properties of Yunnan siliceous phosphate rock, the suitable mineral separation methods are studied. The results show that： this rock mainly contains flour-apatite, and low quartz-magnesium. Quartz crystal and apatite crystals are interaction existing, and acid insoluble is different along with particle size, so the rock can be isolated by ore grinding and sieving method. The phosphate rock with particle size 〉 300μm has reached a diamond level, can be used directly; the phosphate rock with particle size 〈 76μ m can be better isolated with dodecylamine as collector in alkaline environment by floatation process, the content of P205 is increased by nearly 5 percentage points.

关 键 词：云南硅质型磷矿 物化性质 磨矿筛分法选矿 浮选柱浮选 

分 类 号：TD97[矿业工程—选矿]