HOME  /  acid leaching dump

acid leaching dump

Therefore there isn’t a means of producing acid and ferric sulfate inside the leach liquors Due to the shortcircuiting of solutions by means of the dump and the shortage of a way of producing acidferric sulfate there’s little or no leaching occurring inside this dump a sieve in a cereal hammer mill

Email:[email protected]

Online Chat

Get Quote

  • acid leaching dump

    The dump leaching of lowgrade copper ores as an integral part of the openpit mining operations in the Southwest has been practiced for the last fifty years and is increasing in importance as one of the major sources of copper

    Online Chat
  • acid leaching dump

    Dump leaching is an industrial process to extract precious metals and copper from ores 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

    Online Chat
  • acid leaching dump

    For centuries small amounts of copper have been recovered from acid minedrainage waters In recent years the expansion of copperbearing waste dump leaching for copper recovery has established a technological basis that is rapidly converting the art of copper leaching into a science

    Online Chat
  • acid leaching dump

    Copper is leached from the dumps by applying up to 12000 galmin of leach solution a combination of spent solution from cementation and makeup water to the top of the dumps by various techniques Efliuent from the dumps is sent to a cementation plant for copper recovery

    Online Chat
  • acid leaching dump

    Dump leaching Wikipedia Dump leaching is an industrial process to extract precious metals and copper from ores 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 silver the dump is irrigated with a dilute cyanide solution that percolates through

    Online Chat
  • acid leaching dump

    A dump leachion exchangesolvent extractionelectrowinning process was selected to treat the Buchim ore to produce 2500 tpy of cathode copper The results obtained as well as the design criteria

    Online Chat
  • acid leaching dump

    Agitated leaching intermediate to highgrade chalcopyrite concentrates are deposited in a tank and leached using mechanical agitation Experimental only The raw material type also determines the type of microorganisms involved Waste dump leaching uses mesophilic ambient temperature microorganisms ie bacteria

    Online Chat
  • acid leaching dump

    Filter the water again using a fine gold filter and dump the water into another bucket and not onto the ground or down the drain Add sodium bicarbonate to the HCL mixture slowly Add a little let it fizz out and then add a little more

    Online Chat
  • acid leaching dump

    Compared to pyrometallurgy leaching is easier to perform requires less energy and is potentially much less harmful as no gaseous pollution occurs Drawbacks of leaching include its lower efficiency and the often significant quantities of waste effluent and tailings produced which are usually either highly acidic or alkali as well as toxic eg Red mud

    Online Chat
  • acid leaching dump

    from gold mine tailings in the presence of sulphuric acid and EDTA was investigated The aim of the study was to determine the effect of different physicochemical parameters on the leaching process and to examine the effect of a complexing agent on metal dissolution A sample was collectedfrom a gold mine tailings dump characterised

    Online Chat
  • acid leaching dump

    Copper recovery by LSXEX in 1968 In 1968 there were only two widely practiced copper leaching processes using dilute sulphuric acid The first process vat leaching of highgrade copper oxide ore followed by EW of copper from the leach solution produced low quality copper cathode at

    Online Chat
  • acid leaching dump

    Description Most leach dump operations involve a mixed oxidesulfide ore and are leached with dilute sulfuric acid solutions Generally dump leaching is performed with minimal solution control and recoveries do not exceed 40 to 60 of the copper present in

    Online Chat
  • acid leaching dump

    leaching step to produce a goldbearing solution as an intermediate product while the recycling of secondary gold from electronic and precious metal scrap is based on the selective and fast dissolution of the precious metal Therefore A Method for Leaching or Dissolving Gold from Ores or

    Online Chat
  • acid leaching dump

    Dump leaching and heap leaching are distinguished by the use of liners Dump leaching refers to the leaching of low grade ore that has been deposited directly on the ground The pregnant leach solution is typically collected in unlined natural drainage basins

    Online Chat
  • acid leaching dump

    Dump leaching Wikipedia Dump leaching is an industrial process to extract precious metals and copper from ores 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 silver the dump is irrigated with a dilute cyanide solution that percolates through

    Online Chat
  • acid leaching dump

    Dump leaching and heap leaching are distinguished by the use of liners Dump leaching refers to the leaching of low grade ore that has been deposited directly on the ground The pregnant leach solution is typically collected in unlined natural drainage basins In contrast heap leaching refers to the

    Online Chat
  • acid leaching dump

    Dump leaching is one of several leaching methods Dump leaching is carried out on rejected offgrade material that during normal mining has been put aside in big dumps at the mine site The particle size of the material is generally big and the ore is processed for many years by sprinkling acidified water on the dump

    Online Chat
  • acid leaching dump

    In a static heap leach operation it is also important to understand the geochemical characteristics of spent ore because it should be dumped in the waste dump after cyanide irrigation process The results show that there is only very slight change in geochemical characterization of PAF ore after being irrigated with cyanide solutions

    Online Chat
  • acid leaching dump

    In order to assess this leaching potential dump ash samples were subjected to extraction with solutions of decreasing pH values 850 700 550 and 400 imitating the reactions of the alkaline ash particles with the possible alkaline neutral and acidic eg acid rain waters

    Online Chat
  • acid leaching dump

    Based on the law of temperature changes in the leaching dump and the forming process of heat flux the basic balance equation of heat flow in dump was established the dissipated heat flow from

    Online Chat
  • acid leaching dump

    2005 August • JOM 47 Research Summary Waste Decontamination The hydrometallurgical leaching of native gold from goldbearing ores or the dissolution of gold metal during the recycling of electronic and precious metal scrap is performed every day using hazardous chemicals such as

    Online Chat
  • acid leaching dump

    Leaching reagents in the form of cyanide and an oxidant such as air or oxygen are added after thickening Leaching takes place in a series of agitated leach reactors or pachucas Before leaching the pH of the pulp is normally adjusted to a value of around 95–11 to ensure minimum loss of cyanide as hydrogen cyanide

    Online Chat
  • acid leaching dump

    The characteristics of Yangla copper oxide ore and acid leaching of this copper ore were investigated The results indicate direct dump acid leaching of raw ore is not feasible for the treatment of this copper ore in practice Sieve sizingwarmingstirringacid leaching process was employed for the treatment of the fine grain materials below 1m while 6619 copper leaching efficiency and1092

    Online Chat
  • acid leaching dump

    Tank leaching is more expensive to construct and to operate than dump heap or in situ leaching processes But the rate of metal extraction is much higher and currently this technique is successfully used for bioleaching of refractory gold ores

    Online Chat
  • acid leaching dump

    Pyrite in leach dumps is often an important provider of sulfuric acid for leaching 22 Solvent Extraction Transfer of Copper from Leach Solutions to Electrolyte The pregnant leach solutions from leaching are too dilute 1–5kg Cu 2 m −3 and too impure for direct production of highpurity cathodes Electrowinning from these solutions would give dendritic soft and impure copper deposits

    Online Chat
  • acid leaching dump

    Heap leaching as distinguished from dump leaching is used for higher trade more valuable ores and is generally smaller than dump leach operations Almost invariably there are one or more impermeable liners under the leach material to maximize recovery of the leachate Heap leaching often takes place over months rather than years

    Online Chat
Hi,may I help you with products, price, etc?

Copyright © 2015.Company name All rights reserved.  SiteMap