leaching galena chloride


HPC Cone Crusher

HPC Cone Crusher

Base on the latest technology and decades of years’ producing experience, Leilton designed the HPC series cone crusher. It has excellent crushing efficiency and good hydraulic control system. Now the…

Read more...

HPT Cone Crusher

HPT Cone Crusher

HPT cone crusher has the same structure and the same crushing theory as traditional HPC cone crusher. But HPT cone crusher strengthens the performance of driving device and sealing service. And the structure…

Read more...

HST Cone Crusher

HST Cone Crusher

HST series single cylinder cone crusher with hydraulic-driven system is a kind of new type high efficient crushing equipment which is developed by our engineers through over 20 year's effort of design,…

Read more...

The effect of chloride ion on the ferric chloride leaching ...

Previous 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.

BIOLEACHING OF GALENA FLOTATION CONCENTRATE

recovered from galena applying hydrometallurgical method, i.e. leaching by oxidant solutions, namely by iron(III) salt in the form of FeCl3 (Dutrizac, 1986). In the process of bioleaching chloride anion, which is toxic for microorganisms, is replaced by sulphate anion. The course of reaction of chemical and biological leaching of galena

DETERMINATION OF LEACHING CONDITIONS OF …

The leaching conditions of galena (PbS) concentrate in hydrochloric acid solution (1.0 M) containing sodium chloride were investigated in this study.

Kinetics of leaching galena concentrates with ferric ...

The ferric fluosiicate leaching oflead has the potential to overcome the problems met in the ferric chloride leachingsystem.The purpose of this investigation was:(1) To investigate whether lead can be selectively recovered from galena concentratesby dissolution in an aqueous ferric fluosilicate solution.(2) To study the effect of time, stirring ...

Study on Electrochemical Reaction Characteristics of ...

hydrometallurgy using chloride is the leaching of lead concentrate by ferric trichloride [1, 2], in which lead in galena is leached to a middling product−solid lead chloride, in acidic chloride medium with ferric chloride as an oxidant, after that, lead is extracted by several …

Ferric Chloride-brine Leaching of Galena Concentrate by ...

Ferric Chloride-brine Leaching of Galena Concentrate - Ebook written by Frank P. Haver, Morton Min Wong. Read this book using Google Play Books app on your PC, android, iOS devices. Download for offline reading, highlight, bookmark or take notes while you read Ferric Chloride-brine Leaching of Galena Concentrate.

The kinetics of leaching galena concentrates with ferric ...

The leaching tests were conducted in a covered 1 L glass reactor with three baffles. Openings were incorporated in the cover for insertion of a stirring rod, a thermometer, a condenser, nitrogen sparger (to prevent oxygen ingress) and two sampling ports (one port for adding sieved galena samples and one port for withdrawing solution samples).

Ferric chloride-brine leaching of galena concentrate …

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

10007640 - Centers for Disease Control and Prevention

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.

Continuous Ferric Chloride Leaching of Galena.

The Bureau of Mines demonstrated ferric chloride leaching of galena concentrate on a continuous bench scale basis. Leaching was performed at 95 deg. C (200 deg. F) and with a contact time of 15 min. The ferric chloride leaching solution was continuously fed to a leaching tank at a constant rate for periods up to 45 h.

Ferric Chloride Leaching - 911metallurgist.com

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 …

Electrogenerative leaching of galena with ferric chloride ...

A generative principle was applied to FeCl3 leaching of galena for the first time in this study. It has been confirmed that a certain quantity of elec…

The leaching of galena in cupric chloride media

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 range 45 °C to 90 °C and for NaCl concentrations from 0 to 4.0 M.

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

2/1/1990· 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 ionic ...

Leaching kinetics of lead from galena with acidified ...

9/4/2012· 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.

Electrogenerative leaching of galena with ferric chloride ...

9/1/2003· Electrogenerative leaching of galena with ferric chloride Electrogenerative leaching of galena with ferric chloride Wang, S.; Fang, Z.; Wang, Y.; Chen, Y. 2003-09-01 00:00:00 A generative principle was applied to FeCl 3 leaching of galena for the first time in this study. It has been confirmed that a certain quantity of electrical energy, as well as the leached products, could be obtained ...

The leaching of sulphide minerals in chloride media ...

Abstract Recent studies on the ferric chloride and cupric chloride leaching of chalcopyrite, galena and sphalerite are reviewed. Although the chloride leaching of chalcopyrite concentrates has been proven at the demonstration plant scale, the leaching reaction is difficult. In contrast, galena dissolves rapidly in FeCl 3 media, and both the leaching rate and lead solubility increase ...

Recovery of Silver, Gold, and Lead From a Complex Sulfide ...

LEACHING Ferric Chloride Because Wong (7) extensively investi­ gated extraction of lead from galena con­ centrates, only minimal effort was ex­ pended to investigate the FeC13 leaching phase of the process. However, because Wong's work was with a high-grade galena …

Model for Predicting the Initial Solution pH at Pre ...

Model for predicting the initial solution pH at pre-assumed final pH and concentration of dissolved zinc, during leaching of galena in butanoic acid solution has been derived. The model; α = 1.4γ/ln[(Zn) 1/3 shows that the initial pH of the leaching is dependent on the values of the pre-assumed final solution pH and concentration of dissolved zinc.

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 …

leaching of galena --cnki

The leaching of galena (PbS) in ferric sulfate media was investigated over the temperature range 55 °C to 95 °C and for various Fe(SO4)1.5, H2SO4, FeSO4, and MgSO4 concentrations. The effect of the elemental sulfur reaction product on the leaching of galena in ferric chloride media

Pressure Leaching of Galena to Recover Lead by …

As part of the U.S. Bureau of Mines program to improve base metal leach systems, pressure leaching of galena (PbS) concentrates in fluosilicic acid (H2SiF6) solution was investigated. Lead extraction was 93 pct when PbS was pressure leached in H2SiF6 at 95° C with 200-psig O2 pressure for 40 min, using ferric nitrate [Fe(NO3)3] as a catalyst.

(PDF) Quantitative leaching of Galena

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 ...

  • gold processing leaching
  • low grade gold leaching and carbon in pulp circuits
  • copper leaching beneficiation latest technology
  • leaching equipment uranium in iran
  • sale of portable leaching plant
  • gold leaching practical
  • galena lead production linelead galena to lead processing machine
    backto top