leaching galena chloride

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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

The leaching of galena in ferric sulfate media | IBOOK.PUB

B. Leaching Procedures Because of the low solubility of PbSO4 in sulfate solutions, the course of the galena leaching reaction was monitored by following the amount of cogenerated ferrous ion. A 1- or 2-g sample of sized galena was agitated at 200 min -~ in 2.7 L of Fe(SOn)l.5-H2SO4 solution heated in a thermostated water bath.

The leaching of galena in cupric chloride media

 · The leaching rate is in-dependent of CuCl 2 concentrations >0.1 M but increases with increasing concentrations of either HC1 or NaCl. The leaching rate decreases with the accumulation of either the PbCl 2 or CuCl reaction

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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 4Underlined numbers in parentheses re fer to items

The leaching of galena in cupric chloride media | SpringerLink

The leaching rate is in-dependent of CuCl 2 concentrations >0.1 M but increases with increasing concentrations of either HC1 or NaCl. The leaching rate decreases with the accumulation of either the PbCl 2 or CuCl reaction product in the leaching medium but is insensitive to the disk rotation speed.

Mechanisms of Surface Passivation during Galena …

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, …

Acid leaching and dissolution of major sulphide ore …

 · The kinetics and mechanisms of dissolution of the major base metal sulphide minerals, pyrite, chalcopyrite, galena and sphalerite in acidic (chloride) media have been investigated. Minerals were ground in air, then dissolved in air-equilibrated solutions at pH 2.5, while monitoring the redox potential.

The Effect Of Chloride Ion On The Ferric Chloride …

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The leaching of galena in cupric chloride media

The leaching of galena in cupric chloride media Dutrizac, J. E. Abstract The kinetics of dissolution of galena (PbS) in CuCl 2-HCl-NaCl media have been investigated using the rotating disk technique. Rapid nonlinear kinetics are observed over the temperature ...

A Critical Review of the Ferric Chloride Leaching of …

Ferric chloride leaching is a potentially attractive method of processing lead concentrates, and many studies have been carried out on the kinetics of dissolution of galena (PbS). In

Representation of the Kinetics of Leaching of Galena by …

THEkinetics of leaching galena by ferric chloride solutions has recently been studied by several authors: Murray 1 (1972) had a disk of galena leached by a 0.5 tool/1 solution of ferric chloride. He found that the diffusion of the ferric ion through the sulfur layer is the limiting step of the kinetics.

A Critical Review of the Ferric Chloride Leaching of Galena

Ferric chloride leaching is a potentially attractive method of processing lead concentrates, and many studies have been carried out on the kinetics of dissolution of galena (PbS). In this paper, the extensive literature on galena dissolution is critically reviewed and the …

Electrogenerative leaching of galena with ferric chloride

 · 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

Wang, S., Fang, Z., Wang, Y. and Chen, Y. (2003) …

Article citations More>> Wang, S., Fang, Z., Wang, Y. and Chen, Y. (2003) Electronegative Leaching of Galena with Ferric Chloride. Minerals Engineering, 16, 869-872. has been cited by the following article: TITLE: Hydrometallurgical Processing of a Nigerian Galena Ore in Nitric Acid: Characterization and Dissolution Kinetics

Chloride leaching of silver and lead from a solid residue after atmospheric leaching …

Chloride leaching of silver and lead from a solid residue after atmospheric leaching… 897 Table 3. Mineralogical composition of flotation copper concentrate and feed for chloride leaching Material unit Bornite Cu 5 FeS 4 Chalcocite Digenite Cu 2 S/Cu 1.8 S Chalco

Study on Electrochemical Reaction Characteristics of Galena in Chloride …

galena (lead sulfide) concentrate was leached by slurry electrolysis in a chloride electrolyte medium. Results showed that PbS in galena concentrate was oxidized mainly by Fe 3+ formed on anode and at the same time lead chloride and sulfur also are formed in the leaching

Determination of leaching conditions of galena …

View Determination of leaching conditions of galena concentrate in acid medium with chloride ions.pdf from CHEMISTY chem at Curtin University. See discussions, stats, and author profiles for this Determination of leaching conditions of galena concentrate in acid ...

Ferric chloride leaching of chalcopyrite, galena and …

Ferric chloride leaching of chalcopyrite, galena and sphalerite by G. P. Demopoulos, 1977, McGill University edition, in English Hooray! You''ve discovered a title that''s missing from our library.Can you help donate a copy? If you own this book, you can mail it to our address below. ...

Recovering Lead Metal from Lak Mine Lead Concentrate by Ferric Chloride Leaching

Several galena leaching processes have been investigated, including processes using ferric chloride [5], ferric sulfate [6], and nitric acid [7]. Chloride leaching, among other processing techniques, is the most recognized and widely used recovery method 2 2 ...

Frontiers | Bioleaching of Indonesian Galena Concentrate …

 · Dutrizac, J. E., and Chen, T. T. (1990). The effect of the elemental sulfur reaction product on the leaching of galena in ferric chloride media. MTB 21, 935–943. doi: 10.1007/BF02670264 CrossRef Full Text | Google Scholar

CN101760623A

The invention discloses a wet leaching method of galena, ozone and hydrogen peroxide are taken as oxidants, ferric chloride is taken as an auxiliary oxidant, and sodium chloride is taken as a Pb complexing agent in the method, thereby leaching the galena. As the ...

Kinetics of Leaching Galena Concentrates with Ferric Fluosilicate Solution

Kinetics of Leaching Galena Concentrates with Ferric Fluosilicate Solution by ALAN AIRONG CHEN B. Eng., Central South University of Technology, China, 1983 M. Eng., Institute of Chemical Metallurgy, Academia Sinica, 1986 A THESIS SUBMITI''ED IN PARTIAL

Warren, G.W., Kim, S. and Henein, H. (1986) The Effect of …

Warren, G.W., Kim, S. and Henein, H. (1986) The Effect of Chloride Ion on the Ferric Chloride Leaching of Galena Concentrate. Metallurgical and Materials Transactions B, …

The Leaching Of Galena In Cupric Chloride Media

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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.

A study of dissolution kinetics of a Nigerian galena ore in hydrochloric …

leaching residue showed the presence of elemental sulphur, lead chloride and a-quartz. ª2011 King Saud University. Production and hosting by Elsevier B.V. 1. Introduction Galena (PbS), the chief ore of lead and one of the most widely distributed metallic

Hydrometallurgical Processing of a Nigerian Galena Ore in Nitric …

Warren et al. [14] investigated the effect of chloride ion on the ferric chloride leaching of galena concentrate, using galena obtained from Alabama, Tuscaloo-sa. 0.2 M FeCl 3 was used in the presence of 4 M NaCl and 0.1 M HCl. The tem-perature range used was

The effect of chloride ion on the ferric chloride leaching …

AbstractPrevious investigations of the ferric chloride brine leaching of galena concentrate have shown that additions of chloride ion result in accelerated dissolution rates. The current study has provided the necessary information to extend and modify these previous results by incorporating the important effect of chloride ion on the dissolution kinetics. As part of this study the solubility ...

Ferric Chloride Leaching

The kinetics of leaching galena concentrates with ferric ...

NIOSHTIC-2 Publications Search

The kinetics of leaching galena with ferric chloride and ferric nitrate have been examined as a function of ferric concentration, salt concentration, temperature, and particle size. Diffusivity of ferric complex ions was also established as a function of ferric chloride ...

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

Y G. Electrogenerative leaching of galena with ferric chloride. Minerals Engineering, 2003,16(9): 869 l Wang Shaofen, Fang Z. Electrogenerative leaching of nickel concentrates with ferric chloride. Journal of Central South University, 2004,11(4):405 l Wang ...

The kinetics of leaching galena concentrates with ferric …

 · The leaching of galena in cupric chloride media Metall. Mater. Trans. B, 20 (1989), pp. 475-483 View Record in Scopus Google Scholar Fuerstenau et al., 1986 M. Fuerstenau, C. Chen, K. Han, B. Palmer Kinetics of galena dissolution in ferric chloride solutions, ...

Ferric chloride-brine leaching of galena concentrate …

Ferric chloride-brine leaching of galena concentrate by Frank P. Haver, 1976, U.S. Bureau of Mines edition, in English Hooray! You''ve discovered a title that''s missing from our library.Can you help donate a copy? If you own this book, you can mail it to our address below. ...

Ferric Chloride Leaching

 · The method consists of leaching galena concentrate with ferric chloride-sodium chloride solution, cooling the solution to crystallize PbCl2, electrolyzing the lead chloride in a molten-salt bath to produce lead metal and chlorine and using the chlorine to regenerate ferric chloride in the leaching solution, 2FeCl2 + Cl2 → 2FeCl2.