Study on the influence of permeability characteristics of ionic rare earth ores on leaching
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".
ionicrare earth mineralspermeability coefficientLeaching test
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