离子型稀土矿渗透特性对浸出的影响研究  

Study on the influence of permeability characteristics of ionic rare earth ores on leaching

作　　者：林杰榜 廖思源 左曦 包家怡 白港 LIN Jie-bang;LIAO Si-yuan;ZUO Xi;BAO Jia-yi;BAI Gang(Zhongxi Guangxi Rare Earth Co.,Ltd,Nanning 530000,China)

机构地区：[1]中稀广西稀土有限公司,广西南宁530000

出　　处：《世界有色金属》2024年第21期178-180,共3页World Nonferrous Metals

摘　　要：离子型稀土矿的渗透特性对浸出效果影响较明显,研究表明:离子型稀土矿的渗透特性与常水头、矿体结构、颗粒级配等密切相关,在相同的级配条件下,其孔隙比越大,则渗透系数就越大;矿体中粗粒(+2mm)含量越多,则矿体的孔隙比越大,渗透系数也随之越大;细粒级配的矿物颗粒越多,则容易造成孔隙堵塞,进而使得渗透系数明显降低。孔隙比与水力梯度变化时,矿体的渗透系数大多数具有“上层矿体>总矿体>下层矿体>中层矿体”的变化特征。The permeability characteristics of ionic rare earth ores have obvious influence on the leaching effect,and the results show that the permeability characteristics of ionic rare earth ores are closely related to the constant water head,ore body structure,particle gradation,etc.,and the larger the porosity ratio under the same grading conditions,the greater the permeability coefficient.The greater the coarse-grained(+2mm)content in the ore body,the larger the porosity ratio of the ore body,and the larger the permeability coefficient.The more mineral particles in the fine-grained gradation,the more pore clogging it is,which in turn leads to a significant decrease in the permeability coefficient.When the porosity ratio and hydraulic gradient change,the permeability coefficient of the ore body is mostly characterized by the change characteristics of"upper ore body>total ore body>lower ore body>middle ore body".

关 键 词：离子型 稀土矿 渗透系数 浸出试验 

分 类 号：TD983[矿业工程—选矿]