Treatment Of Copper Flash Smelter Flue Dusts For Copper And Zinc Extraction And

Hydrometallurgy 105 (2010) 148–154

Contents lists available at ScienceDirect

Hydrometallurgy j o u r n a l h o m e p a g e : w w w. e l s ev i e r. c o m / l o c a t e / h yd r o m e t

Treatment of copper flash smelter flue dusts for copper and zinc extraction and arsenic stabilization
A. Morales a, M. Cruells b, A. Roca b,⁎, R. Bergó b a b

Universidad Católica del Norte, Department of Metallurgical Engineering, Antofagasta, Chile
Universitat de Barcelona, Department of Materials Science and Metallurgical Engineering, Faculty Chemistry, Barcelona, Spain

a r t i c l e

i n f o

Article history:
Received 14 June 2010
Received in revised form 2 September 2010
Accepted 2 September 2010
Available online 9 September 2010
Keywords:
Copper smelter dusts
Arsenic stabilization
Copper and zinc extraction

a b s t r a c t
A flue dust sample of copper from flash smelting furnace has been extensively characterized. The main phases of the dusts are magnetite, cuprospinel, chalcocyanite, zincosite, dolerophanite, and claudetite. As minor phases, tenorite, arsenolite, delafossite and enargite were detected. In the sample studied, particles were mainly spherical and less than 60 μm. The leaching of flue dust sample with water dissolved copper sulfates and zinc sulfates and, partially, arsenic oxides, in an exothermic process. The leaching of the residue after water leaching in several acid media increased the dissolution of copper and arsenic oxides and small amounts of zinc. A preliminary study by hydrocyclone classification was carried out with the objective of to obtain two fractions: a coarse fraction rich in copper and a fine fraction rich in arsenic. However, results obtained in this sample were not very successful. In the stabilization study, the residue obtained after leaching the copper flash smelter flue dust with sulfuric acid was mixed with sludge from a paper factory (coinertization process). The smaller size fraction (N 12 μm) obtained in the hydrocyclone was also mixed

References: Baczek, F.A., Wojcik, B.C., Jueschke, A.A., Lewis, D.M., Otto, J.C., Tuttle, L.L. 1982. Biswas, A.K., Davenport, W.G., 1976. Extractive Metallurgy of Copper, First edition. Carter, M., Vance, E.R., Aldridge, L.P., Zaw, M., Khoe, G., 1994. Immobilization of arsenic trioxide in cementitious materials Diari Oficial de la Generalitat de Catalunya (Official Newspaper of the Catalan Government), 2000.3/09.21 order, 26 September 2000. Dutrizac, J.E., Jambor, J.L., 1987. The behavior of arsenic during jarosite precipitation: arsenic precipitation at 97 °C from sulfate or chloride media Dutrizac, J.E., Jambor, J.L., 1988. The synthesis of crystalline scorodite FeAsO4.2H2O. Dutrizac, J.E., Jambor, J.L., Chen, T.T., 1987. The behavior of arsenic during jarosite precipitation: reactions at 150 °C and the mechanism of arsenic precipitation. Ermakov, V.I., 1979. Complex treatment of fine dusts of uralian copper-smelting works. Fu, Y., Jiang, L., Wang, D., 2000. Removal of arsenic from copper smelter flue dust by calcinations Gabb, P.J., Evans, J.P. 1997. Hydrometallurgical and leach processing of impurity streams from the pyrometallurgy of copper sulfide ores Gorai, B., Jana, R.K., Khan, Z.H., 2002. Electrorefining electrolyte from a copper plant dust Grau, J., Roca, A., Cruells, M., Viñals, J. 2004. Process for inertization of inorganic residues, European Patent, 04103069.3. Hanks, R.J., Van der Zel, J.P., Chesney, P., Harris, G.B., 1979. Bismuth at Rokana copper smelter, Zambia: its behavior and extraction from flue dusts Ke, J., Qin, R., 2000. Arsenic removal and bismuth recovery from copper smelter flue dust Kunter, R.S., Bedal, W.E., 1992. Chloride-process treatment of smelter flue dusts. JOM Journal of the Minerals Metals and Materials Society 44 (12), 35–38. Law, H.H., Bohrer, M.P., O 'Hara, P.A., Sapjeta, J., Tierney, V., 1992. Recovery of metals from copper smelter furnace flue dust Martín, I.M., López–Delgado, A., López, F.A., Coedo, A.G., Dorado, M.T., Alguacil, F.J., 2003 metallic copper by hydrometallurgical processing. J. Chem. Eng. Japan 36 (12), 1498–1502. Mochida, H., Iida, O., 1988. Copper smelter flue dust treatment. Jap. Kokai Tokkyo Koho, 3. Morales, A. 2006. Caracterización de polvos de fundición de cobre y establecimiento de rutas de procesado Morales, A., Cruells, M., Roca, A., Bergó, R., 2007. Characterization of flue dusts from a copper smelter furnace, copper recovery and arsenic stabilization Mulale, C.T., Mwema, M.D., Mashala, G.B., 1999. Retreatment of dust waste from the copper smelter and converter Núñez, C., Espiell, F., Roca, A., 1985. Recovery of copper, silver and zinc from Huelva (Spain) copper smelter flue dust by a chloride leach process Robles, A., Serna, A.E., Sandez, M., 1999. Alkaline arsenic leaching from smelter flue dust and leaching solution regeneration Roman-Moguel, G.J., Plascencia, G., Pérez, J., Garcia, A., 1995. Copper recycling from waste pickling solutions Smirnov, M.P., Khvan, V.T., Bibenina, G.A., Kefilyan, R.P., Il 'yasov, N.I., 1984. Complex treatment of lead and rhenium containing sulfate dusts from copper plants. Sumitomo Metal Mining. 1982. Metal recovery from flue dust containing copper. Japan Patent 57.201.577. Twidwell, L.G., Mehta, A.K., 1985. Disposal of arsenic bearing copper smelter flue dust. Viñals, J., Sunyer, A., Torres, E., Beltran, V., Llorca, N., 2010. Arsenic inertization from copper pyrometallurgy through phases of the alunite supergroup Copper 2010. Clausthal-Zellerfeld, Germany, pp. 2071–2086. Vol 5. Vircikova, E., Havlik, M., 1999. Removing arsenic from converter dust by a hydrometallurgical method Vircikova, E., Molnár, L., Lech, P., Reitznerova, L., 1995. Solubilities of amorphous Fe-As precipitates Yin, B.Z., Caba, E., Barron, L., Belin, D., Morris, W., Vosika, M., Bartlett, R., 1992. Copper extraction from smelter flue dust by lime-roast/ammoniacal heap leaching Yu, Z., 1987. Process for bismuth recovery from the flue dust of copper smelting. Zhang, Z.W., Lu, W., Zheng, F., 1992. Separation and recovery of copper and zinc from flue dust