Leaching Galena Chloride

2021-08-11T13:08:53+00:00
  • Electrogenerative leaching of galena with ferric chloride ...

    Sep 01, 2003  Electrogenerative leaching is a new research field in hydrometallurgy. In the present paper, various factors affecting the electrogenerative leaching of galena with ferric chloride have been studied. It was obvious that the low resistance ion membrane and high active electrode of sulfide are of most important in the leaching.

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  • Ferric Chloride Brine Leaching of Galena Lead Concentrate

    Jan 02, 2021  Other values (S°, Ag, Cu, Zn) may be recovered by additional treatment of either the leach residue or leach solution. Although a ferric chloride leach has been used successfully in the treatment of chalcopyrite, nothing has been reported in this country concerning application of the technique to galena.

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  • Kinetics of galena leaching in hydrochloric acid-chloride ...

    Feb 01, 1990  This article presents a series of studies on the nonoxidative leaching of galena with hydrochloric acid in the presence of a metallic chloride. A systematic study was carried out using a succession of metallic chlorides with cations of different valencies in an attempt to generalize the leaching behavior of these solutions. The reaction order for leaching galena, in terms of the mean

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  • The leaching of galena in cupric chloride media - NASA/ADS

    Aug 01, 1989  The kinetics of dissolution of galena (PbS) in CuCl 2 -HCl-NaCl media have been investigated using the rotating disk technique. nonlinear kinetics are observed over the temperature range 45 °C to 90 °C and for NaCl concentrations from 0 to 4.0 M. The leaching rate is in-dependent of CuCl 2 concentrations >0.1 M but increases with increasing concentrations of either

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  • The leaching of galena in cupric chloride media SpringerLink

    Up to10%cash back  The kinetics of dissolution of galena (PbS) in CuCl2-HCl-NaCl media have been investigated using the rotating disk technique. nonlinear kinetics are observed over the temperature range 45 °C to 90 °C and for NaCl concentrations from 0 to 4.0 M. The leaching rate is in-dependent of CuCl2 concentrations >0.1 M but increases with increasing concentrations of either HC1

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  • Kinetics of galena leaching in hydrochloric acid-chloride ...

    Up to10%cash back  The reaction order for leaching galena, in terms of the mean ionic activity of HCl, is 3/2 over a wide range of concentration. The addition of soluble chlorides to a HCl solution increases the leaching rate of the galena by augmenting the mean ionic activity of the acid.

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  • leaching galena chloride

    The leaching of galena in cupric chloride media . In fact, two major pilot-scale campaigns t2,31have been carried out on the ferric chloride leaching of lead concentrates, and a significant amount of fundamental research has been done on the relevant kinetics of reaction of galena with ferric chloride solutions. Read More

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  • The leaching of galena in cupric chloride media SpringerLink

    The kinetics of dissolution of galena (PbS) in CuCl2-HCl-NaCl media have been investigated using the rotating disk technique. nonlinear kinetics are observed over the temperature range 45 °C to 90 °C and for NaCl concentrations from 0 to 4.0 M. The leaching rate is in-dependent of CuCl2 concentrations >0.1 M but increases with increasing concentrations of either HC1 or NaCl.

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  • NIOSHTIC-2 Publications Search - 10007640 - Ferric ...

    The procedure involves leaching galena flotation concentrates with ferric chloride (fecl3) solution to obtain lead chloride (pbcl2) and elemental sulfur as expressed by the following chemical reaction: pbs + 2fecl3 -> pbcl2 + 2fecl2 + s deg. At 100 deg c, over 99 pct of the pbs in the concentrate is converted to pbcl2 in less than 15 min.

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  • The leaching of galena in cupric chloride media - NASA/ADS

    The kinetics of dissolution of galena (PbS) in CuCl 2 -HCl-NaCl media have been investigated using the rotating disk technique. nonlinear kinetics are observed over the temperature range 45 °C to 90 °C and for NaCl concentrations from 0 to 4.0 M. The leaching rate is in-dependent of CuCl 2 concentrations >0.1 M but increases with increasing concentrations of either HC1 or NaCl.

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  • Direct Leaching of Lead from Galena Using Acetic Acid in ...

    Investigations on the kinetics of leaching lead from galena (PbS), using acetic acid (HAc) solutions in iron(III) chloride (FeCl 3) solutions, were conducted using shrinking core models.The effects of operational parameters, such as temperature, acetic acid iron(III) chloride concentration, and galena particle size, on the leaching process were also studied.

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  • Kinetics of Leaching Galena Concentrates with Ferric ...

    2.2.5 Chloride Leaching of Lead 16 2.2.6 Sulfate Leaching of Lead 25 2.2.7 Fluosilicate Leaching of Lead 29 ... Figure 16c,d SEM micrographs of galena leach residues at 20 and 45°C 66 Figure 1 6e,f SEM micrographs of galena leach residues at 65 and 95°C 67 Figure 17. Leaching of lead at various particle size ranges of galena

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  • Leaching kinetics of lead from galena with acidified ...

    The leaching of lead from galena in acidic hydrogen peroxide in presence of sodium chloride solution has been investigated with respect to the effects of hydrochloric acid and hydrogen peroxide concentrations, by changing the stirring speed, leaching temperature and the particle size.

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  • Chloride leaching of silver and lead from a solid residue ...

    After that galena is further converted to PbSO 4 (Fig. 4) and the content of PbS remarkably decreases in the leached solid (Table 3). Fig. 2. Galena grain before leaching Fig. 3. Galena grain leached partially Fig. 4. Galena grain after atmospheric leaching The dominating copper mineral identified in the feed for chloride leaching was

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  • Ferric chloride-brine leaching of galena concentrate (Book ...

    Additional Physical Format: Online version: Haver, Frank P. Ferric chloride-brine leaching of galena concentrate (OCoLC)609298760: Material Type: Government

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  • How to Use Bleach on Gold Ore to Remove Gold Sciencing

    Apr 24, 2017  This was the first commercial method used for gold extraction. Place the ore into the mortar and grind it to the size of sand grains. Put the ore grains into a plastic bowl. Add the 35-percent hydrochloric acid to the sodium hypochlorite bleach into a flask or beaker, in a two-to-one ratio of acid to bleach. Ensure that the liquid mixture is at ...

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  • (PDF) Metals recovery from multimetal sulphide ...

    Metals recovery from multimetal sulphide concentrates (CuFeS2–PbS–ZnS): combination of thermal process and pressure leaching. International Journal of Mineral Processing, 2003. Ata Akcil. Download PDF. Download Full PDF Package. This paper. A short summary of this paper.

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  • processing of lead ore flow chartcrushing of lead ore flow c

    12.6 Primary Lead Smelting - EPA. The third and final phase in the processing of lead ore to metallurgical lead, the refining of the bullion in cast iron kettles, occurs in 5 steps: (1) removal of antimony, tin, and arsenic; (2) removal of precious metals by Parke’s Process, in

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  • leaching galena chloride

    The leaching of galena in cupric chloride media . In fact, two major pilot-scale campaigns t2,31have been carried out on the ferric chloride leaching of lead concentrates, and a significant amount of fundamental research has been done on the relevant kinetics of reaction of galena with ferric chloride solutions. Read More

  • Get Price
  • Direct Leaching of Lead from Galena Using Acetic Acid in ...

    Investigations on the kinetics of leaching lead from galena (PbS), using acetic acid (HAc) solutions in iron(III) chloride (FeCl 3) solutions, were conducted using shrinking core models.The effects of operational parameters, such as temperature, acetic acid iron(III) chloride concentration, and galena particle size, on the leaching process were also studied.

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  • Kinetics of Leaching Galena Concentrates with Ferric ...

    2.2.5 Chloride Leaching of Lead 16 2.2.6 Sulfate Leaching of Lead 25 2.2.7 Fluosilicate Leaching of Lead 29 ... Figure 16c,d SEM micrographs of galena leach residues at 20 and 45°C 66 Figure 1 6e,f SEM micrographs of galena leach residues at 65 and 95°C 67 Figure 17. Leaching of lead at various particle size ranges of galena

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  • Mechanisms of Surface Passivation during Galena Leaching ...

    Formation mechanisms of surface passivating phases and their impact on the kinetics of galena leaching in ferric chloride, ferric perchlorate, and ferric nitrate solutions. Hydrometallurgy 2020 , 197 ,

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  • Frontiers Bioleaching of Indonesian Galena Concentrate ...

    Oct 08, 2020  An investigation of the thermodynamics and kinetics of the ferric chloride brine leaching of galena concentrate. MTB 17, 29–39. doi: 10.1007/BF02670816. CrossRef Full Text Google Scholar. Liao, M. X., and Deng, T. L. (2004). Zinc and lead extraction from complex raw sulfides by sequential bioleaching and acidic brine leach.

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  • Chloride leaching of silver and lead from a solid residue ...

    After that galena is further converted to PbSO 4 (Fig. 4) and the content of PbS remarkably decreases in the leached solid (Table 3). Fig. 2. Galena grain before leaching Fig. 3. Galena grain leached partially Fig. 4. Galena grain after atmospheric leaching The dominating copper mineral identified in the feed for chloride leaching was

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  • US4181588A - Method of recovering lead through the direct ...

    A method for recovering lead from lead chloride through aqueous electrolysis wherein the lead chloride is directly reduced to metallic lead on the cathode. The electrolyte may comprise liquor from the leaching of galena concentrates, which liquor includes ferrous chloride that is subsequently converted to ferric chloride during electrolysis and recycled for additional leaching.

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  • CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING OF

    Chloride–hypochlorite oxidation and leaching of refractory sulfide gold concentrate 63 Fig. 1. The Pourbaix diagram of Fe–S at [Fe] –= 10 4 M, [S] = 10– M and 25 C (the chlorine species regions are also marked) (Marsden and House, 2005) Fig. 2.

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  • US8070851B2 - Chloride heap leaching - Google Patents

    A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride/sulphate solution in the presence of oxygen with the surface potential of the mineral below 600 mV (vs. SHE) to cause dissolution of the copper sulphide.

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  • Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous ...

    through to other leaching processes, such as the bacterial leaching of gold sulfide concentrates, where ferric iron promotes the dissolution of pyrite and arsenopyrite [22]. In addition, numerous studies showed that leaching of chalcopyrite in chloride media results

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  • The effect of the elemental sulfur reaction product on the ...

    The dissolution of galena in 0.3 M FeCl3-0.3 M HC1 solutions containing 0 to 6 M LiCl was studied at 80 °C, and parabolic kinetics were observed at all LiCl concentrations. The leaching rate increases gradually with increasing LiCl concentrations to ≈4 M LiCl; the presence of >4 M LiCl results in a rapid increase in the leaching rate. The solubility of PbCl2 in 0.3 M FeCl3-0.3 M HC1 ...

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  • Formation mechanisms of surface passivating phases and ...

    Hydrometallurgical leaching of Pb from galena is an environmentally friendly alternative to the traditional pyrometallurgical processing. Leaching produces secondary phases passivating the surface of galena and has a negative impact on the leaching rate and Pb extraction, yet a comprehensive understanding of surface passivation is lacking. Here we studied galena leaching in FeCl3, Fe(ClO4)3 ...

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  • PLEASE DO NOT REMOVE FROM LIBRARY iRII9055

    The H2SiF6 is then recycled to leach more PbS. Sulfur is recovered from the leach residue by solvent extraction. Several galena leaching processes have been investigated, including processes using ferric chloride (7), ferric sulfate (8), nitric acid (9), and ammonium ace­ tate solutions (10). The leached PbC1 2

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  • Chloride leaching of silver and lead from a solid residue ...

    View Chloride leaching of silver and lead from a solid residue after atmospheric leaching of flotation co from CHEMISTY chem at Curtin University. Physicochem. Probl. Miner. Process. 53(2), 2017,

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