澳大利亚蒙特艾萨锌-铅-银-铜矿山

The Mount Isa Zinc-Lead-Silver-Copper Mine in Australia

澳大利亚蒙特艾萨锌-铅-银-铜矿山是澳大利亚大型矿冶企业之一。它由两个独立的锌—铅—银矿山和选矿厂,以及铜矿山和选矿厂组成。截至2007年6月底,证实和控制的铜矿石储量为8400万t,含铜1.8%～3.4%;锌—铅—银矿石储量为8400万t,含锌4.8%～8.8%,铅2.2%～5.5%和银39～125g/t。铜矿山采用分段空场采矿法开采矿石;锌-铅-银矿山采用分段空场采矿法和落顶充填采矿法开采矿石。铜选矿厂采用半自磨/球磨—易浮矿物预先浮选—铜粗选—浮选柱精选—浮选机再精选工艺流程,得到铜精矿。锌—铅—银矿石选矿工艺流程包括棒磨/球磨—铅粗选—粗精矿艾萨磨再磨—铅精选—浮选铅精矿常温反浮选易浮矿物,获得铅精矿;铅粗选尾矿进行锌粗选—浮选柱精选—粗选尾矿艾萨磨再磨—锌再选—再选精选,获得锌精矿。矿山矿产品产量为铜矿山670万t/a铜矿石,锌—铅—银矿石650万t/a,矿产锌226529t/a(锌精矿);粗铅锭125195t/a,银826万盎司/a(粗铅锭),阳极铜217907t/a,矿产铜172552t/a(铜精矿)。

The Mount Isa zinc-lead-silver-copper Mine is the one of the large mining and metallurgical industry.To the end of June 2007 Mount Isa Zinc-Lead-Silver Mine has the proved and probable copper ore reserves of 84 Mt containing 1.8%～3.4%Cu as well as the proved and probable zinc-lead-silver ore reserves of 84 Mt containing 4.8%～8.8%zinc,2.2%～5.5%lead and 39～125g/t silver.The copper orebody worked using a sub-level open stoping.Stopes are backfilled with cemented aggregate.The zinc-lead-silver orebody worked using a sub-level open stoping and cut-and-fill.The copper concentrator uses SAG/ball mill-preflotation of easy flotation minerals – copper roughing – column cleaning –recleaning flowsheet to obtain copper concentrates.The zinc-lead-silver concentrator uses rod mill/ball mill-lead roughing – regrinding in Isa mills – lead cleaning – preflotaion – zinc roughing – regrinding in Isa mills – zinc cleaning flowsheet to obtain zinc concentrates and lead concentrates containing silver.In 2007 production measure of Mount Isa zinc-lead-silver-copper mine was 6.7Mt/a of copper ore,6.5Mt/a of zinc-lead-silver ore,226529t/a of zinc(in zinc concentrates),125195t/a lead bullion,8.26Moz/a of silver(in crude),172552t/a copper(in copper concentrates)and 217907t/a copper anode.