Non-destructive detection of solution flow behavior during heap leaching considering interface micro-infiltration - Details

author：

Xue, Zhen-Lin (Xue, Zhen-Lin.) ^[1] | Gan, De-Qing (Gan, De-Qing.) ^[2] | Zhang, You-Zhi (Zhang, You-Zhi.) ^[3] | Liu, Zhi-Yi (Liu, Zhi-Yi.) ^[4] | Huang, Ming-Qing (Huang, Ming-Qing.) ^[5] (Scholars：黄明清)

Indexed by：

EI Scopus PKU CSCD

Abstract：

In　order　to　reveal　the　effect　of　micro-infiltration　at　the　interface　between　ore　and　solution　on　the　microscopic　flow　field　distribution　in　the　ore　particles,　the　leaching　structure　model　was　established　based　on　the　measured　structure　in　leaching　heap,　and　the　solution　flow　behavior　during　heap　leaching　was　detected　in　a　non-destructive　detection　way　by　using　PIV　technique.　The　results　show　that,　under　the　continuous　micro-infiltration　at　the　mineral-liquid　interface,　the　equilibrium　of　the　velocity　field　is　significantly　improved,　the　occurrence　of　the　preferential　flow　is　suppressed,　the　leaching　blind　zone　is　greatly　reduced,　and　the　maximum　flow　velocity　is　reduced　by　50%.　The　swirling　flow　area　is　greatly　improved　under　the　effect　of　micro-infiltration,　and　the　vorticity　distribution　presents　adherent.　A　vortex　is　formed　when　the　vortices　gather　in　the　same　direction　and　the　edge　direction　changes.　Within　the　spray　intensity　range　of　the　experiment,　the　uniformity　of　flow　velocity　distribution　and　the　maximum　flow　velocity　value　will　increase　with　the　increase　of　spray　intensity.　©　2020,　Science　Press.　All　right　reserved.

Keyword：

Flow fields Flow velocity Groundwater flow Leaching Velocity Velocity distribution Vortex flow

Community：

[ 1 ] [Xue, Zhen-Lin]College of Mining Engineering, North China University of Science and Technology, Tangshan; 063210, China
[ 2 ] [Gan, De-Qing]College of Mining Engineering, North China University of Science and Technology, Tangshan; 063210, China
[ 3 ] [Zhang, You-Zhi]College of Mining Engineering, North China University of Science and Technology, Tangshan; 063210, China
[ 4 ] [Liu, Zhi-Yi]College of Mining Engineering, North China University of Science and Technology, Tangshan; 063210, China
[ 5 ] [Huang, Ming-Qing]College of Zijin Mining, Fuzhou University, Fuzhou; 350116, China