?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F489%2F&rft.title=Copper+ore+heap+leaching&rft.creator=Barton%2C+N.G.&rft.creator=Wake%2C+G.C.&rft.subject=Materials&rft.description=Heap+leaching+of+ore+is+becoming+more+important+as+a+cost+effective+means+of+metal+extraction.+Important+metals+like+copper+and+gold+are+produced+by+this+process.+In+this+report%2C+we+study+chemical+and+physical+processes+in+heap+leaching+in+order+to+gain+a+better+understanding+of+leach+heaps.+These+processes+are+complicated%2C+not+well+supported+by+data%2C+and+generally+not+well+understood.+Heap+leaching+is+investigated+using+a+variety+of+complementary+approaches%3A+data+analysis%2C+microstructure+models+of+the+ore%2C+overall+chemical+processes%2C+and+analysis+of+fluid+motions+by+continuum+and+probabilistic+methods.+A+significant+finding+of+our+work+is+that+voids+in+the+heap+are+not+full+of+solution%2C+and+further+the+distribution+of+leach+liquor+within+the+ore+is+not+uniform+which+decreases+the+efficiency+of+the+leaching+process.+We+suggest+mechanisms+by+which+the+uniformity+of+the+leach+liquor+distribution+can+be+increased%2C+thus+increasing+the+efficiency+of+the+process.&rft.date=1997&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F489%2F1%2FCopper-ore-heap-leaching.pdf&rft.identifier=++Barton%2C+N.G.+and+Wake%2C+G.C.++(1997)+Copper+ore+heap+leaching.++%5BStudy+Group+Report%5D+++++