By William G.I. Davenport, Matthew King, Mark Schlesinger, A.K. Biswas
This new version has been generally revised and up-to-date because the third variation released in 1994. It includes an excellent better intensity of commercial info, focussing on how copper steel is extracted from ore and scrap, and the way this extraction may be made extra effective. sleek excessive depth smelting methods are offered intimately, particularly flash, Contop, Isasmelt, Noranda, Teniente and direct-to-blister smelting. massive realization is paid to the regulate of SO
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Additional resources for Extractive Metallurgy of Copper
New York, NY. CopperDevelopmentAssociation(2002) Copperand copperalloy consumption in the UnitedStatesby functionaluse- 1997. org(Marketdata) Killick, D. A. NorandaInc. (2002) Copperend uses. , Roberts,L. J. gov (Commoditystatisticsand information,Copper, Minerals Yearbook,Copper2000) USGS (2002b) United States GeologicalSurvey, Historical statisticsfor mineral commodities- copper. E. L. 5 to 2% Cu) for economicdirect smelting. For thisreason,all ores destinedfor pyrometallurgical processingare physicallyconcentrated before smelting.
2 lists copper'smain minerals. These minerals occur at low concentrations in ores,the remainderbeing 'waste' mineralssuchas andesite morethan 1 andgranite. It is now rareto find a largecopperdepositaveraging or 2% Cu. 5% Cu (average)arebeingmined from open pits while ores down to 1% (average) are being taken from underground mines. 2. Sulfidemineralsaretreatedby theFig. e. pyrometallurgically. Carbonates, chlorides, oxides,silicates andsulfates is aretreatedby theFig. hydrometallurgically. Chalcocite treated bothways.
This chapterdescribesconcentrating Cu ores. It emphasizes sulfideminerals becausetheyaccountfor almostall Cu concentration. It entails: (a) crushingand grindingthe ore to a size whereits Cu mineralgrainsare dividedfrom itsnon-Cu-mineral grains (b) physical separationof Cu minerals from non-Cu mineralsby froth flotationto formCu rich concentrate andCu barren‘tailing’. Fig. 3 give industrialdata. Copperconcentrators typicallytreat 10 000 to 100 000 tonnesof ore per day, dependingon the rate their mines produceore.