澳大利亚奥林匹克坝铜-铀矿山

The Olympic Dam Copper-Uranium Mine in Australia

澳大利亚奥林匹克坝铜-铀矿是世界上现有最大的铀矿床、第四大金矿床和第五大铜矿床。截至2011年6月,证实和控制储量为5.53亿t,含铜1.84%、U3O8 0.57kg/t、金0.69g/t和银3.41g/t;。测定和指示的矿石资源量为59.79亿t,含铜0.93%、U3O8 0.29kg/t、金0.34g/t和银1.68g/t。矿山采用胶结充填深孔分段空场采矿法开采矿石。选矿厂采用常规的磨矿-优先浮选硫化铜精矿的流程,得到含铀、金和银的铜精矿。浮选获得的铜精矿经酸浸/铜萃取/电积法获得阴极铜,硫酸浸出/萃取/沉淀/煅烧法获得氧化铀。2007年必和必拓公司提出矿山扩建计划,增补的环境影响评估报告(SEIS)已于2011年月10月得到政府批准。扩建工程分五个阶段进行。扩建完成后该矿山将成为世界上最大的铜矿山。矿山矿产品最终年产量达到:75万t/a矿产铜,1.9万t/a氧化铀8、0万盎司金/a和290万盎司/a银。

The Olympic Dam copper-Uranium Mine has the largest uranium deposit, fourth largest gold deposit and fifth largest copper deposit in the world. To the end of June 2011 Olympic Dam has the proved and probable ore reserves of 553 Mt containing 1.84% Cu,0.57kg/t U30s, 0. 69g/t Au and 6.41g/t Ag, as well as measured and indicated ore resources of 5979 Mt containing 0. 93% Cu,0.29kg/t U3O8, 0. 34g/t Au and 1.68g/t Ag. The orebody worked using a long-hole sublevel open stoping. Stopes are backfilled with cemented aggregate. The average mining rate is 12Mt/a of sulphide ores. The concentrator uses a conventional SAG mill- selective flotation flowsheet to obtain copper concentrates containing uranium, gold and silver. The cathode copper was obtained from copper concentrates with acid leaching/solvent extraction/electrowinning, the uranium oxide （U30s ）with leaching/solvent extraction/precipitation/calcination. The current production measure of Olympic Dam mine was 12Mt/a of ore, 600kt/a of copper concentrate, 235kt/a of refined copper, 4500t/a of uranium oxide, of 100koz/a gold and 800kozJa of silver. In 2007 BHP Billiton announced Olympic Dab mine expansion plan. The final SEIS were released to public in May 2011. Approvals from the South Australian Government and the Commonwealth was received in October 2011. aser completion of tile expansion project the Olympic Dam would become the largest copper mine in the world. The eventual target output of the mine will be 750kt/a of copper, 19kt/a uranium oxide, 800koz/a of gold and 2900koz/a of silver.