Experimental Study on the Permeability of Rare Earths with Different Particle Composition for a Novel Heap Leaching Technology

In order to solve the problem of vegetation restoration in traditional heap leaching rare earths, a novel technology is proposed. technology, liquid laterally injected into earth pile from side end so that can be carried out quickly on top pile. this study, laboratory test was performed investigate permeability ion-adsorbed under lateral injection conditions. Four samples with varied combinations mineral particles at different sizes were adopted emphatically discuss influence particle composition permeability. The experimental results show conditions governed by migration fine particles. As hydraulic head increases, undergo motion process stabilization, initiation, deposition, and remigration. Accordingly, coefficient exhibits variation gradual increase, re-stabilization, re-increase. exudation causes non-uniform space. coefficients near outlet are much greater than those middle positions has an important effect combination coarse particles, preferential flow paths easy develop as soil, easily migrate they cannot block pore channels. By contrast, find it difficult migrate, relatively stable fine-medium earth. This conducive