Selective Leaching of Hot Filter Cake Residue Produced by Zinc Plant with Sodium Hydroxide

Document Type : Research Article

Authors

1 Mineral Processing Group, Faculty of Mining Engineering, Sahand University of Technology, Tabriz, I.R. IRAN

2 ACECR Brunch of Amirkabir University of Technology, Tehran, I.R. IRAN

3 Chemical Engineering Department, Iran University of Science and Technology, Tehran, I.R. IRAN

Abstract

Hot Filter Cake (HFC) is one of the valuable residues in cathodic zinc producer factory inIran that isobtained in cobaltremoval formzincoreleachingstage.HFChas15-25% zinc, 0.5-1.5% Co, 3-8% Mn and some minor other elements. This cake is secondary source of these elements. In this investigation sodium hydroxide was used as selective leaching of zinc from HFC. At high sodium hydroxide concentration zinc ion dissolved as  complex.Effective parameters such as sodium hydroxide concentration, temperature, solid liquid ratio, agitation rate and particle size were studied on zinc recovery. Results showed that sodium hydroxide concentration and temperature has significant effect but particle size has minor effect of zinc recovery. Final results maximum zinc recovery obtained 95.66 percent in two stage leaching at temperature 95 0C, sodium hydroxide concentration 8 M, solid liquid ratio 1:10, agitation rate 850 rpm and particle size 38-75 micron.

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References

[ 1] خدادادی، احمد؛ کلینی، سیدجواد؛ مرادخانی، داوود؛، صداقت، بهزاد؛، مرزبان، مهدی؛ بررسی امکان جلوگیری از انتقال فلزات سنگین پسماندهای کارخانه‌های تولید روی به محیط زیست، نشریه علمی پژوهشی مهندسی معدن، (4)2: 29ـ36 (1386).
[2] Cheng R., Overby J., "General Chemistry: The Essential Concepts", Six Edition, McGraw Hill, (2008).
[3] Haghshenas D.F., Darvishi M., Shabestari Z.M., Leaching Recovery of Zinc, Cobalt and Manganese from Zinc Purification Residue, International Journal of Engineering Transactions B: Application, 2: 133-140 (2007).
[4] Eivazi A.R.H., Alamdari E.K., Moradkhani D., Salardini A.A., Kinetic Analysis of Isothermal Leaching of Zinc from Zinc Plant Residue, International Journal of Nonferrous Metallurgy, 2: 10-20 (2013).
[5] Zhao Y., Stanforth R., Production of Zn Powder by Alkaline Treatment of Smithsonite Zn–Pb Ores, Hydrometallurgy, 56 (2): 237-249(2000)
[6] Moradkhani D., Rasouli M., Behnian D., Arjmandfar H., Ashtari P., Selective Zinc Alkaline Leaching Optimization and Cadmium Sponge Recovery by Electrowinning from Cold Filter Cake (CFC) Residue, Hydrometallurgy, 115-116: 84-92(2012).
[7] Martell A.E., Smith R.M., "NIST Critically Selected Stability Constants of Metals Complexes", National Institute of Standards and Technology, Gaithersburg, MD (2004).
[8] Fabiano M.F., Santos, Pablo, S., Pina, Rodrigo Porcaro., Victor A., Oliveira, Carlos A., Silva, Versiane A. Leão., The Kinetics of Zinc Silicate Leaching in Sodium Hydroxide, Hydrometallurgy, 102: 43-49(2010)
[9] Kim T.H., Kang J.G., Sohn J.S., Rhee K.I., Lee S.W., Shin S.M.,  Preparation of Mn–Zn Ferrite from Spent Zinc-Carbon Batteries by Alkali Leaching, Acid Leaching and co-Precipitation. Met. Mater. Int., 14: 655-658(2008).
[10] Atlas of Eh-pH diagrams, "Intercomparison of Thermodynamic Databases", Geological Survey of Japan Open File Report No.419, May (2005).
[11] Merrill, C.C., Lang, R.S., USBM Report RI, p. 6576 (1965).
[12] Cusanelli, D.C., Coffin, L.D., Rajcevic, H.P., U.S. Patent 3 (743), 501 (1973).
[13] Valdez, E.G., Dean, K.C., USBM Report, p. 8000 (1975).
[14] کلینی، سیدجواد.، خدادادی، احمد.، حسنی، مسعود.، سینتیک و مدل سازی فرایند لیچینگ کنسانتره اسفالریت توسط سدیم هیدروکسید و در حضور سرب نیترات، نشریه شیمی و مهندسی شیمی ایران، (4)29 : 25ـ36 (1389).

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