Last edited by Mikale
Sunday, July 19, 2020 | History

2 edition of Effects of impurities in electrolytes on electrowinning of lead from lead chloride found in the catalog.

Effects of impurities in electrolytes on electrowinning of lead from lead chloride

D. C. Fleck

Effects of impurities in electrolytes on electrowinning of lead from lead chloride

by D. C. Fleck

  • 24 Want to read
  • 14 Currently reading

Published by U.S. Dept. of the Interior, Bureau of Mines in [Avondale, Md.] .
Written in English

    Subjects:
  • Lead -- Electrometallurgy.,
  • Electrolytes.,
  • Lead chloride.

  • Edition Notes

    Bibliography: p. 8.

    Statementby D.C. Fleck, R.G. Sandberg, and M.M. Wong.
    SeriesReport of investigations / United States Department of the Interiro, Bureau of Mines ;, 8742, Report of investigations (United States. Bureau of Mines) ;, 8742.
    ContributionsSandberg, R. G., Wong, M. M. 1924-
    Classifications
    LC ClassificationsTN23 .U43 no. 8742, TN785 .U43 no. 8742
    The Physical Object
    Pagination8 p. :
    ID Numbers
    Open LibraryOL3140142M
    LC Control Number82600344

    AbstractIn recent years, a renewed interest in studying the electrochemical corrosion behavior of lead anodes during zinc electrowinning is probably due to the particularly high sulfuric acid concentrations in zinc electrolyte where lead alloy anodes have high cell voltage and high corrosion rate of lead. The high corrosion rate of lead alloy resulted in Pb contamination on zinc :// In the PLACID process, lead is leached in warm, slightly acidic, brine to form soluble lead chloride. This solution is purified by cementation with lead powder. Pure lead is then won from the lead chloride electrolyte on the cathode of the electrowinning cell and is ://

      effects on the electrowinning process. Chloride ions are usually present in electrolytes as a result of chloride transfer through solvent extraction, or are intentionally added as either hydrochloric acid or sodium chloride (Davenport et al., ). Chloride ion concentrations usually range from g/L to g/L (Cui, ). Electrowinning of Copper and similar metals - YouTube. 7/8/ Electrowinning, also called electroextraction, is the electrodeposition of metals from their ores that have been put in solution via a process commonly referred to as ://

    If lead-alloy anodes are to be replaced, the alternative anodes must be economically justifiable. Currently, DSA (dimensionally stable anodes) are used in electrowinning in chloride-based solutions and recovery of metals from dilute solutions. Recently, implementation of the titanium coated anodes has been made in the copper :// Full text of "Selective nickel electrowinning from dilute electrolytes" Iron Sulfur Copper SiO A1 2 3 Nickel CaO MgO TiO 15 Cobalt 11 Lead 10 Zinc 06 Manganese Cadmium Component, g/ton: Silver Palladium Gold 68 Platinum 31 RESULTS SYNTHETIC ELECTROLYTE Electrochemical Studies In order


Share this book
You might also like
lookoutmans handbook

lookoutmans handbook

writings and lectures of Rudolf Steiner

writings and lectures of Rudolf Steiner

LOVE AT THE LAUNDROMAT (Starfire)

LOVE AT THE LAUNDROMAT (Starfire)

Fuel homeostasis and the nervous system

Fuel homeostasis and the nervous system

North Atlantic Network

North Atlantic Network

double bed

double bed

Lenins contributions to the development of geography

Lenins contributions to the development of geography

Application of reliability concepts to the problems of plant maintenance

Application of reliability concepts to the problems of plant maintenance

Leadership Skills for the New Age of Nonprofits

Leadership Skills for the New Age of Nonprofits

Energy and Water Development Appropriations for 2005

Energy and Water Development Appropriations for 2005

Bird Carving Basics

Bird Carving Basics

Bible and archaeology.

Bible and archaeology.

The intruder

The intruder

Effects of impurities in electrolytes on electrowinning of lead from lead chloride by D. C. Fleck Download PDF EPUB FB2

Effects of Impurities in Electrolytes on Electrowinning of Lead from Lead Chloride. Authors has investigated ferric chloride leaching of galena to prepare lead chloride for molten-salt electrowinning to produce lead metal.

Results of bench-scale tests are reported on the effects of cacl2, cucl2, fecl2, mgcl2, nacl, zncl2, pbso4, and Effects of impurities in electrolytes on electrowinning of lead from lead chloride. [Avondale, Md.]: U.S. Dept. of the Interior, Bureau of Mines, (OCoLC) Online version: Fleck, D.C.

(Delbert C.). Effects of impurities in electrolytes on electrowinning of lead from lead ://   Lead is one of the oldest metals known to man and has been used for hundreds of years.

The method for producing lead from galena has changed very little. A lead concentrate is mixed with fluxing agents, roasted to remove sulfur, and heated to about 1,° C with carbon to obtain an impure metallic product, which is refined. The smelting process is a low-cost operation but results in SO2 and Effects of impurities in electrolytes on electrowinning of lead from lead chloride / By D.

(Delbert C.) Fleck, M. (Morton Min) Wong and R. (Richard G.) Sandberg Abstract   The effects of glue and calcium lignin sulfonate additives, and chloride and antimony impurities on the lead electrowinning process, using a fluoborate electrolyte, were studied.

Short-term deposition tests, voltammetry, electrochemical impedance spectroscopy (EIS) and SEM techniques were used for the :// The effects of glue and calcium lignin sulfonate additives, and chloride and antimony impurities on the lead electrowinning process, using a fluoborate electrolyte, were :// In this work, the effects of chloride ions on the electrowinning of nickel from sulfate electrolytes has been studied.

Specifically, the influence of the chloride ion concentration in the range of   electrowinning depending on whether the copper mineral is processed by pyrometallurgy or hydrometallurgy. A survey indicated that over million tonnes of copper were processed per year from electrowinning operations [1].

In copper electrowinning, copper is usually electrodeposited on L stainless steel cathodes for six to seven ://?article=&context=masters_theses. Corrosion and protection of lead anodes in acidic copper sulphate solutions tes *1,1,´stomo 1,n2,tes2 x 3 It is known that lead anodes used in the industrial extraction of copper by electrolysis (electrowinning) suffer corrosion as a result of accidental or intended current interruptions.

?sequence=1. electrolyte with selected impurities including magnesium, aluminum, manganese, and iron did not affect the cathode purity.

However, giL of chloride ions markedly increased anode corrosion and the sub­ sequent transfer of lead to the cathode copper. 1Chemical engineer. 2Supervisory   Effects of additives on zinc electrowinning from zinc sulphate aqueous solution with a higher concentration fluoride ( mg L − 1) have been investigated based on the measurements of polarization curves (PC), cyclic voltammetry (the working electrode was made from pure aluminum, a graphite rod was used as counter and a saturated calomel electrode (SCE) as the reference electrode) and zinc   The fluidized bed electrowinning of zinc from chloride electrolytes has been studied in a laboratory cell.

The cell was operated at superficial current densities in the range – A/m 2 with catholytes containing up to 62 kg/m 3 Zn and up to 28 kg/m 3 HCl. Anolytes examined contained 58 kg/m 3 NaCl and up to kg/m 3 HCl and, in some instances, had the same composition as the ://   Halide ions such as chloride and fluoride are often present as impurities (1 to mg/L) in electrolytes used in the electrowinning of zinc.

In the case of chloride, oxidation to chlorine is possible at lead-silver anodes and this can create health and safety problems in zinc :// The effects of germanium, antimony, arsenic, cobalt, glue, and free acid concentration were studied on both commercial and synthetic electrolytes.

The effects of a single factor and the combined effects of multiple factors were elucidated. The temperature, zinc concentration, and current density were varied for some of the ://   The data presented in Fig.

1 showed that the CE decreased and the PC increased during the process of 48 h zinc electrowinning as the nickel ions concentration increased in the electrolytes. But there were no significant variations when the nickel ions concentration was lower than mg L − 1 in the electrolytes.

The decreasing trend of CE and the increasing trend of PC were very significant The effects of some common impurities such as copper, iron, nickel, cobalt, lead and their interaction with an ionic liquid additive 1-butylmethylimidazolium hydrogen sulfate-[BMIM]HSO4 on zinc The individual effects of lead, copper, nickel, cobalt and antimony on zinc electrowinning were evaluated by measurements in high-purity synthetic solutions, free from ://   @inproceedings{SuInfluenceOL, title={Influence of lead impurity and manganese addition on main operating parameters of zinc electrowinning}, author={Chaoran Su}, year={} } table figure figure table figure table figure table figure table figure   8) Removal of As, Sb and Bi via electrowinning them onto an impure Cu deposit.

9) Evaporation of water and precipitation of Ni, Fe and Co as sulfides. • Table Typical electrolyte conditions for copper electrorefining Figure summarizes the total process. Normally, the   @article{osti_, title = {Recovery of lead from battery sludge by electrowinning}, author = {Cole, E R and Lee, A Y and Paulson, D L}, abstractNote = {Research by the Bureau of Mines has resulted in a combination electrorefining-electrowinning method for recycling the lead from scrap batteries.

The lead metal grids and lugs are separated from the sludge by ball milling, washing, and. 4 Additives – Mostly Proprietary Brighteners – are plating accelerators, which act as a micro-leveler and impact grain refinement.

They tend to be attracted to cathode induction zone points of higher electro-potential, temporarily packing the area and forcing copper to deposit The effects of manganese ions in the electrolyte on the anodic behaviour of lead alloy anodes used in the electrowinning of copper and zinc have not previously been definitively established.

Potentiostatic and galvanostatic oxidation of rotating disc electrodes of Pb-Ag and Pb-Ca-Sn anodes has been used to investigate the anodic behaviour of Lead-silver anode behavior for zinc electrowinning in sulfuric acid solution Wei Zhang [email protected] 1, 2, Sanae Haskouri 2, Georges Houlachi 3 and Edward Ghali 2 1 School of Metallurgical Engineering, Hunan University of Technology, Zhuzhou, China?language=en.