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Copper Sulfide Mining Processes

By: Paul Schommer. Copper Sulfide Mining Processes. Overview. Formation of Deposits Uses of Materials Processes High Temperature Pressure Oxidation Leaching Sorption Impact. Formation of Deposits. MN- Porphyry Deposit Igneous Rock Water leaches metals Heats Precipitates

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Copper Sulfide Mining Processes

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  1. By: Paul Schommer Copper Sulfide Mining Processes

  2. Overview • Formation of Deposits • Uses of Materials • Processes • High Temperature Pressure Oxidation • Leaching • Sorption • Impact

  3. Formation of Deposits • MN- Porphyry Deposit • Igneous Rock • Water leaches metals • Heats • Precipitates • Chalcopyrite- Ore • Grade • Weathering

  4. Uses of Copper • Architectural • Cladding, roofing, plumbing • Lightning Rods • Industry • Electricity • Biological Applications

  5. High Temperature Pressure Oxidation • Oxidizes Copper via Pressure Oxidation • Occurs at 200˚C-225˚C • Few bars of pressure

  6. Copper Leaching

  7. Electro Winning • Oxidized materials  • Azurite (2CuCO 3 · Cu(OH)3) • Brochantite (CuSO 4) • Chrysocolla (CuSiO 3 · 2H 2O) • Cuprite (Cu2O) • Lead Plates- anode • Copper or Stainless Steel- Cathode • Produce 300 lb plates

  8. Reactions Secondary Copper Sulfide by ferric iron: Cu2S+Fe3+ Cu2++Fe2++CuS CuS+Fe3+ Cu2++Fe2++S0

  9. Reactions Secondary Copper Sulfide leaching: Cu2S+0.5O2+H2SO4  CuSO4+CuS+H2O CuS+0.5O2+H2SO4 CuSO4+H2O

  10. Reactions Rapid oxidization of ferrous iron by bacteria: 2Fe2++2H++0.5O2 2Fe3++H2O 2S0+2H2O+3O2 2H2SO4

  11. Underground Leaching • Geo-engineering field • Extraction and Electrowinning • Ores never leave the ground • Cost effective • No Human Intervention • More deposits

  12. Sorption • Attach to another substance • Synthetic resins • Activated coal • Zeolites • Clays • Copper extracted with Smelting (file:///C:/Users/Paul/Downloads/17190480.pdf)

  13. Flotation • Minerals attach to air bubbles • Sodium ethylxanthate

  14. Impacts • Create toxic wastes • Neutralization with Limestone (CaCO3) • Synthetic Gypsum CaSO4•2H2O Ca2+SO42-+2H2O • Run-off

  15. References Chanturia, V. A., Kalmykov, V. N., Shadrunova, I. V., & Emel'yanenko, E. A. (2004). Sorption Process for Copper Recovery from Effluents of Mining Enterprises by Granulated Pyrite-Bearing Wastes. Journal of Mining Science, 40(6), 619-623. Retrieved April 26, 2014, from Solar Copper Extraction. (n.d.). In Freeport-McMoRan Copper & Gold. Retrieved April 27, 2014, from http://www.fcx.com/resources/fmi/drilling.html Dresher, W. H. (2001, August). How Hydrometallurgy and the SX/EW Process Made Copper the "Green" Metal. Copper Development Association INC. Farr, M. R. (1997, June). Exploring for Copper Deposits. In Beloit College. Retrieved April 26, 2014, from http://www.beloit.edu/sepm/Rocks_and_minerals/exploring_for_copper.html Introduction of an Innovative Technology for the Underground beneficiation of Copper Ore and its Subsequent Extraction and Electrowinning. (2005, October). Metallurgist, 49, 9-10. Retrieved April 27, 2014, from Solar. Minnesota Minerals Coordinating Committee. (2013, March). Explore Minnesota: COPPER, NICKEL, PGEs. In Minnesota Government. Retrieved April 25, 2014 Memebridge. (2014). Uses of Copper. In Uses Of. Retrieved May 1, 2014, from http://www.usesof.net/uses-of-copper.html Taylor, A. (2013, September). What's Happening in Copper Hydromet. In ALTA Metallurgical Services. Retrieved May 1, 2014

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