studies the amount of reduction in the permeability of heap leaching structures drainage, in the effect of chemical parameter

Heap leaching structures use for accumulate and obtaining metals from ore. These structures compose of different parts. Among those, creating a drainage layer in the mineral material bed is very important. because during this long period the amount, of the permeability will decrease, due to different factors. In addition to these factors, we also mention to the chemical, physical and biological factors. The author is trying to examine the effect of chemical factors on heap leaching structures drainage gravel, by simulating different parts of the leaching structures. Therefore, suitable cells are built for accumulating ore materials and drainage gravel. After filling these cells with the before said material during 6 months, acid is been irrigation on ore material cells and the cell output is transferred to the input of the drainage gravel cells. The permanent washing of the ore material and the action and reaction, cause a chemical clogging and also the closing of the pores of the drainage gravel. In the determined period for simulation, the permeability amount of drainage gravel will be measured and the reduction amount of the coefficient of the permeability by the effect of clogging will be studied permanently. Suitable design for gravel drainage height, needs suitable information of the amount of permeability reduction. Use the obtained results of the simulation, due to the prevent of creating drainage damages.