dump leaching

  • Waste Dump Leaching Copper

    Dump leaching is an important supplement to open pit-mill production of copper, providing about 10 percent of the total copper recovered Because dump leaching is slow and incomplete, much copper remains in the dumps after leaching has been terminated.

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  • Heap leaching

    Heap leaching is, in contrast to many dump leaching operations, a pre-planned process where arrangements are made to optimize conditions for leaching In brief, the mineral ore or concentrate is piled in a heap and lixiviant fluid is distributed over the surface to leach.

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  • Heap Leaching Simulation

    Ore leaching techniques combined with solution treatment procedures offer exceptional conditions to produce high purity metal from very low-grade ore sourc Essential percentage of the world copper production is based on the heap and dump leaching techniqu.

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  • Chapter 6 Copper Production Technology

    aMining is essentially a Comminution process (see table 6-l); dump leaching uses materials that have already been mined and broken UP withexdosives bpflma~ily Iowgrade oxidized minerals (eg, malachite,azurite, chrysocolla,-cu prite, tenorite) but also sulfideminerals in waste dumps ccement copper usually is smelted, converted, and.

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  • Heap leaching

    Other articles where Heap leaching is discussed: gold processing: Cyanidation: ,extracting gold from low-grade ores, heap leaching is practiced The huge heaps described above are sprayed with a dilute solution of sodium cyanide, and this percolates down through the piled ore, dissolving the gold.

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  • A mathematical model of the chemistry of the dump

    predictions of leaching performance would be made for the multi-year lifespan of a dump leaching operation In the work presented here, the effects of various chemical factors on the dump leaching of chalcopyrite are considered This is the rnost abundant copper sulfide mineral undergoing leaching (43) and is very difficult to leach.

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  • flow of dump leaching

    May 14, 2008 Dump leaching is one of several leaching methods material that during normal mining has been put aside in big dumps at the mine site pollution if leachate escapes collection and flows into natural water-suppli Heap Leach Mining Systems

    Many translated example sentences containing "dump leaching" - Spanish-English dictionary and search engine for Spanish translations.

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  • Science Break: Metal Leaching

    Dump leaching is relatively cheap, so is commonly used for low grade or After a year or two, a typical low grade ore will yield ~50% of its metal in this way Dump leaching operations, if not done properly, can result in significant environmental damage.

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  • US7635457B2

    The disclosed invention provides a process for enhanced recovery of one or more metal values from heap and/or dump leaching of ores containing the metal values, the process comprising: (a) providing a high grade leach solution obtained by heap or dump leaching of fresh high grade ore containing a first metal value; (b) subjecting the high grade leach solution to a first solvent extraction of.

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  • (PDF) In situ and Dump Leaching of Phosphate Rock

    Habashi proposed in situ, dump or vat leaching of phosphate rocks with dilute HNO 3 (20%) or HCl (10%) to get a solution of monocalcium phosphate, and to allow recovering uranium and rare earths.

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  • Dump leaching

    Dump leaching is an industrial process to extract precious metals and copper from or Dump leaching is similar to heap leaching, however in the case of dump leaching ore is taken directly from the mine and stacked on the leach pad without crushing where.

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  • US4120935A

    Dump leaching is now an accepted method of recovering copper from sub-standard copper-bearing materials including some material categorized as waste, such as dumps formed in earlier decades from copper mining operations Most leach dump operations involve a mixed oxide-sulfide ore and are leached with dilute sulfuric acid solutions.

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  • Morenci Copper Mine, Arizona

    The total heap and dump leach-liquor yield is 16,500m³/h, copper recovery was 585% in 2003 Four SX plants, namely Central, Metcalfe, Stargo and Modoc, feed three tankhouses (Central, Southside and Stargo) The new leaching-electrowinning capacity was incorporated into the existing complex, which is already the world’s largest.

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  • Geothermal energy for copper dump leaching (Technical

    The technology selected is the dump leaching of copper and other metal values from low-grade copper or The portion of the presently used process to be placed in this case is the solvent extraction (SX) train in which the copper in solution is separated from the leach liquor from dump leaching.

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  • Dump Leaching

    Dump acid leaching process was employed for the treatment of the coarse grain materials above 1 mm, while 6865% copper leaching efficiency and 1543 t H2SO4 consumption for per ton copper are obtained Key techniques are that sieve sizing process strictly controls the content of fine grain materials in dump leaching process and the searches.

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  • ASARCO » Silver Bell Mine

    All copper in these pits will be extracted from the ore utilizing dump leaching Each month 1,800,000 tons of ore and waste are mined The four open-pits and other plant facilities are situated on 19,000 acr Mining affected areas of the facility total 3,900 acr.

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  • Dump Leaching Copper Recovery

    Dump leaching of low-tenor ores is a simple procedure whereby leach solution is distributed over the top of the dump to dissolve the copper minerals as the solution percolates through the bed The enriched leach liquor is collected at the base of the dump, treated to recover the copper, and recycled to the dump.

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  • Bacterial leaching of ores and other materials

    Bacterial ore leaching can be applied to extract heavy metals from low grade ores, industrial wastes and other materials on an industrial scale by different procedures: dump leaching, in situ leaching, tank leaching, leaching in suspension Sulfidic copper and uranium ores are the principle ores leached in several countri.

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  • Tritiated Water as a Tracer in the Dump Leaching of Copper

    Tritiated water has been used as a tracer to follow the path of leach liquids as they flow through a coppermine dump Semipermeable layers, produced within the dump by compaction and "stratification" of deposited dump material, restrict the vertical movement of water Knowledge of this restriction.

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  • Proposed Heap Leach Process

    Aug 15, 2013· This video demonstrates the proposed process for mineral extraction being considered for GoGold's Parral Tailings Project In Parral, Mexico.

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  • What is DUMP LEACHING? What does DUMP LEACHING mean?

    Sep 10, 2017· Dump leaching is similar to heap leaching, however in the case of dump leaching ore is taken directly from the mine and stacked on the leach pad without crushing where, in the case of gold and.

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