PURIFICATION PHASES OF ZINC SULPHATE SOLUTION OBTAINED FROM NEUTRAL LEACHING PROCESS OF ZINC CALCINE

Nurten DEVA; Musa RIZAJ

PURIFICATION PHASES OF ZINC SULPHATE SOLUTION OBTAINED FROM NEUTRAL LEACHING PROCESS OF ZINC CALCINE

Nurten DEVA, Musa RIZAJ

Öz

The aim of this paper is based in analyze of the zinc sulphate solution obtained from neutral leaching process of zinc calcine in "Trepca" and its purification from impurities. This solution besides zinc contains also and other impurities such as (Cu, Cd, Co, Ni, As, Ge, Sb, Se, Te, Ag etc.), which are with different concentrations. The sulphate solution can released from metal impurities based on the fact that they have higher electro - chemical potential than zinc and, as such, during the refining process they separate and precipitate in metallic form .Treatment of solution with appropriate technological methods technologically is very important in continuation of the electrolysis process and is accompanied by economic effects, because of non-ferrous and rare metals benefit. In this paper are described the phases of the purification process including acidic purification, cooling, needed materials and equipments for the refining process. Also, special attention is dedicated to the factors that have influence in the process development such as concentration, temperature, time, compressed air, etc.

Anahtar Kelimeler

Zinc , sulfate solution, purification process, impurities

Tam Metin:

PDF (English)

Referanslar

A. Nelson, G.P. Demopoulos and G. Houlachi: “The effect of solution constituents and novel activators on cobalt cementation”, Canadian Metallurgical Quarterly, Vol 39, No 2, (2000), pp. 175-186.

B. Nyman, A. Aaltonen, S. E. Hultholm, K. Karpale, Application of new hydrometallurgical develop-ments in the Outokumpu HIKO process. Hydrometallurgy, 29(1992), 461-478

Boyan, S.B., Victoria, V.K., Nikolai, K.K., 2004. Purification of zinc sulfate solutions from cobalt and nickel through activated cementation. Hydrometallurgy 73, 163–168.

D. R. Fosnacht, T. J. O’Keefe, The effects of certain impurities and their interactions on zinc electrowinning. Metallurgy Transactions, 14(1983), 645-655

Free M, lebrary (e-book collection). Hydrometallurgy: fundamentals and applications. Hoboken, N.J: TMS-Wiley; 2013

J. Han, W. Liu, W. Qin, Y. Zheng, and H. Luo, “Optimization Study on the Leaching of High Iron-Bearing Zinc Calcine After Reduction Roasting,” Metallurgical andMaterials Transactions B: Process Metallurgy and Materials Processing Science, vol. 47, no. 1, pp. 686–693, 2016

J. Moghaddam, R. Sarraf-Mamoory, M. Abdollahy, Y. Yamini, Purification of zinc ammoniacal leaching solution by cementation: Determination of optimum process conditions with experimental design by Taguchi’s method. Separation and Purification Technology, 51(2006), 157-164

L.A. Kazanbaev, P.A. Kozlov, Kubasov V.L., A.V. Kolesnikov; “Zinc Hydrometallurgy”, ISBN: 5-98191-020-8, «Ore and Metals", 2006. – p. 176

M. Sethurajan, D. Huguenot, R. Jain et al., “Leaching and selective zinc recovery from acidic leachates of zinc metallurgical leach residues,” Journal of Hazardous Materials, vol. 324, pp. 71–82, 2017.

Purification Process, Vieille Montagne, Operating Guide, Book III, Trepca mine, zinc plant, 1982, Mitrovica, Kosovo

R. W. Lew ,1994. “The removal of cobalt from zinc sulphate electrolytes using copper-antimony process” Vol. British columbia, Vancouver, Canada,

V. Singh, Technological innovation in the zinc electrolyte purification process of a hydrometallurgical zinc plant through reduction in zinc dust consumption. Hydrometallurgy, 40(1996), 247-262

V. Van Der Pas, D. B. Dreisinger, A fundamental study of cobalt cementation by zinc dust in the presence of copper and antimony additives. Hydrometallurgy, 43(1996), 187-205