wmandirty metals mining, communities, and the environmentin the united states, for example, the copper ore mined at the beginning of the th century consisted of about 2.5 percent usable metal by weight; today that proportion has dropped to 0.51 percent. in g mining, it is estimated that only 0.01 percent (thats onehundred thousandth of 1 percent) of the ore is actually refined into g.mineral commodity report 4 copperworld primary and secondary production of refined copper was 8.825 mt in 92. ore processing, smelting and refining copper minerals are separated from ores mainly by the process of froth flotation. the ore (0.52% cu) is crushed and ground to produce a fine suspension in water which is passed through a series of flotation cells. air jetsmineralogical and metallurgical examination ofok tedi mining (otml) mines and concentrates 600 tonnes of copper concentrate annually in the star mountains of the western province of papua new guinea. full descriptions of the mine and concentrator were presented by stapelton and england (93). the ok tedi deposit consists of a number of differentXinhai to acquire yandera copper project in png miningjun 29, · based on a prefeasibility study on yandera, the asset has measured and indicated resources of 727 million tonnes at 0.39% copperequivalent, anok tedi mine overviewinfrastructurehistoryenvironmental impactsee alsoexternal links
as a substantial economic entity in papua new guinea and the western province, accounting for over half of the entire province's economy and 25.7% of the country's entire export earnings, the mine has been responsible for a large amount of the infrastructure.
the mine works as an open cut operation and mount fubilan has been reduced to a deep pit in the ground. · text under ccbysa licenseremocion de fluor en oktedi mine copper fluorineconcentrate 727 080 30.5 23.5 83.2 71.3 ok tedi mining (otml) produces custom copper/g concentrates from the porphyry and skarn ores contained within tailing 29 567 9 0. 0.23 .8 28.7 the mount fubilan intrusive system.reaction kinetics of iron oxides in ok tedi magnetitemagnetic skarn ore (mso) is one of the major copper bearing ore extracted by the ok tedi copper mine in papua new guinea (png). copper minerals are recovered by flotation while the iron not associated with copper are discarded as tailings. the objective of this investigation was to
ok tedi mine wriok tedi mine some facts and figures operating life 8410. jobs ok tedi mining (otml) employs about 2, staff. about 1,800 are papua new guinea citizens and 800 live within a 40kilometer radius of the mine. production about 0, tons of copper and 500, ounces of g a . by december 01, the mine hadenvironmental impacts of terrestrial mining with casedisposal methods are used globally tailings dam, landfill, ok tedi copper mine aerial view of the ok tedi mine in the star mountains. 25. background of ok tedi copper mine 400m depth annual production. 0,t cu 500,oz au. ore reserve 100mt @ 0.8% cu and 1.1g/t au. 07 ok tedi ore composition analysis ore milledchapter 9 biogeochemistry of copper in the fly riverjan 01, 08· since mining of the mount fubilan porphyry copperg ore body by ok tedi mining (otml) began in 84, the ok tedi/fly river system has received high loads of minederived sediments enriched in particulate copper.the potential release of copper from these sediments and its toxicity to aquatic organisms in the river system was an obvious concern to mine management.mineral resources potential and mining in the pacificridge mine in 98. small to medium scale alluvial g and silver mining was reported in the last quarter of the . th. century and continued in the best part of the . th. century. png has been on the world mineral map since the early 70s after the bougainville copper mine came into production. to date, png has eight operatingok tedi mine, oceania mining technology mininga supergene enriched copper zone of chalcocite and digenite directly underlies the oxide cap. mining processes in papua new guinea. mining activity at ok tedi is performed on a continuous basis throughout the , producing approximately 78,t of ore and 80,t of overburden. open pit methods including drilling and blasting are employed.increasing fine copper recovery at the ok tedifeb 01, 98· this paper describes laboratory and plant based investigations on methods to increase fine copper recovery during flotation treatment of ok tedi porphyry sulphide ores. currently the ok tedi concentrator treats a mixed porphyry/skarn ore blend, which is ground to a d 80 of 0 μm with flotation carried out using a dithiophosphatecopper extraction and purification chemguidethis page looks at the extraction of copper from its ores, its purification by electrolysis, and some of its uses. before you get too bogged down in the extraction of copper, make sure that you need it for whatever syllabus you are using. extracting copper from its ores. the method used to extract copper from its ores depends on the nature of
skarn copper deposits innapr 07, · ok tedis main ore body includes both porphyry and skarn ores. the skarn ores are very high grade, and supply approximately 50 percent of the contained ore reserves. junior mining companies withmajor mines projects ok tedi (mt. fubilan) mineore is mined and processed at an onsite flotation processing plant capable of treating up to 24 million tonnes per annum (mtpa). the plant currently recovers copper, g and silver into a saleable concentrate. the primary ore is crushed and ground using semiautogenous grinding and ball mills to a final grain size of approximately 0 microns.operations ok tedi mining the ok tedi mine is an opencut copper, g and silver mine located at mt. fubilan in the western province of papua new guinea. approximately 240 thousand tonnes of overburden (waste rock) is mined each day from a pit covering about 2.6 square kilometres. in addition, about 60 thousand tonnes of ore is mined each day and delivered to the milldevelopment exploration · mining processing operationsmining processing ok tedi mining the primary ore is crushed and ground using semiautogenous grinding and ball mills to a final grain size of approximately 0 microns. the finely ground material is treated in two mineral floatation circuits to extract the copper, g and silver as a copper concentrate. a portion of g is also separately captured utilising a gravity g circuit.estimated reading time 2 minsmining for the future. appendix h ok tedi riverineappendix h ok tedi riverine disposal case study h5 figure h5. location of the ok tedi mine in relation to the fly river catchment in 80 it was estimated that 73,500 people lived in the ok tedi/fly river drainage area. of these, otml's compensation and community improvement programmes include around 50, people (buhupe, 98).