Stockpile Oxidation Management
Newmont Batu Hijau operates with an accelerated mining rate to optimize life of mine (LOM)project economics.This results in a portion of ore mined being stockpiled for reclaim and processing throughout,and at the end of mine life.LOM economics can be further enhanced by preserving stockpiled ore value by mitigating oxidation effects. A detailed stockpile ore oxidation study was conducted to: · Develop a practical understanding of how oxidation affects ore value; · Determine how oxidation rate can be controlled,and; · Determine how oxidation effects can be mitigated to preserve ore value.The result of the study is a stockpile management strategy that significantly reduces oxidation related losses and,implementation of that strategy within practical constraints.Implementation includes installation of Controlled Potential Sulfidisation (CPS) flotation to facilitate oxidised sulfide copper recovery and,recovery of dissolved copper from stockpile drainage solution into saleable product.This paper describes the study results including managing and predicting stockpile oxidation with time,monitoring performance of implemented CPS flotation and recovery of dissolved copper from stockpile drainage.These are essential elements of successful long term mine operation in Batu Hijau.
Flotation Copper Sulfide Controlled Potential Sulfidisation Oxidation SULFIDOX
R.Lestari K.McCaffery A.Garvie C.Linklater
P.T.Newmont Nusa Tenggara,Jl.Sriwiyaya 258,Mataram,Lombok,NTB.Indonesia SRK Consulting,Level 6,44 Market St,Sydney,Australia
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
4154-4164
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）