Abstract
Water-quenched samples were taken from a commercial flash furnace at three levels along its reaction shaft during operation at high feed rate. The samples were subjected to a series of analysis and observation. Such processes of the feed in reaction shaft as oxidation , desulfurization, melting, slag and matte formation and etc., variations of particle size along axial and radical direction of the shaft are investigated. The following smelting mechanism in reaction shaft named as “Multi-particle and multi-phase fusion model ” is proposed: (1) Fragmentation and collision of concentrate particles take place simultaneously in reaction shaft with particle size growing up. Collision produces large-size “unit melt” which falls into the reaction layer in the settler bath. (2) In the settler reaction layer below the shaft, weak bath smelting reactions take place among the shaft products, producing final matte and slag which separate into two layers. (3) The processes in the shaft are all progressive along the whole height of the shaft. The predominant reaction in the shaft is oxidation , not reduction .
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Jorgensen FRA (1983) Single-particle combustion of chalcopyrite. Proc Australas Inst Min Metall 288:37–46
Themelis NJ, Wu L, Jiao Q (1988) Some aspects of mathematical modeling of flash smelting phenomena. In: Robertson DGG, Sohn HY, Themelis NJ (eds) Paper presented at flash reaction processes, international conference. University of Missouri-Rolla, Rolla, MO, pp 263–285
Kim YH, Themelis NJ (1986) Effect of phase transformation and particle fragmentation on the flash reaction of complex metal sulfides. In: Gaskell DR, Hager JP, Hoffmann JE (eds) Paper presented at international symposium on innovative technology and reactor design in extraction metallurgy, Warrendale, PA, pp 349–369
Kemori N, Denholm WT, Kurokawa H (1989) Reaction mechanism in a copper flash smelting furnace. Metall Mater Trans B 20B:327–336
Kemori N, Ojima Y, Mori Y, Yasukawa M (1987) Simulation of oxygen pressure profile along the reaction shaft. In: Szekely J, Hales LB, Henein H (eds) Paper presented at mathematical modelling of materials processing operation. The Metallurgical Society of AIME, Warrendale, PA, pp 883–899
Jorgensen FRA, Taylor RN, Dickinson W, Stevenson I (1992) Sampling techniques for flash smelter shafts. Paper presented at extractive metallurgy of gold and base metals, Kalgoorlie, 26–28 Oct 1992. Australasian Institute of Mining and Metallurgy, Parkville, VIC, pp 395–400
Asaki Z (1992) Kinetic studies of copper flash smelting furnace and improvements of its operation in the smelters in Japan. Miner Process Extr Metall Rev 11(3):163–185
Kimura T, Ojima Y, Mori Y, Ishii Y (1986) Reaction mechanism in a flash smelting reaction shaft. In: Gaskell DR, Hager JP, Hoffmann JE (eds) Paper presented at international symposium. The Reinhardt Schumann international symposium on innovative technology and reactor design in extraction metallurgy. TMS-AIME, Warrendale, PA, pp 403–418
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Jun, Z., Zhuo, C. (2018). Smelting Mechanism in the Reaction Shaft of a Commercial Copper Flash Furnace. In: Davis, B., et al. Extraction 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-95022-8_42
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DOI: https://doi.org/10.1007/978-3-319-95022-8_42
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