2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 3: Takano Intl. Symp. / Metals & Alloys Processing
| Editors: | Kongoli F, Noldin JH, Mourao MB, Tschiptschin AP, D'Abreu JC |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 550 pages |
| ISBN: | 978-1-987820-26-3 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Non-Traditional Pyrometallurgical Processes Applied to Metals, Slags and Concentrates
Joao Batista Ferreira Neto1;1INSTITUTE FOR TECHNOLOGICAL RESEARCH, Sao Paulo, Brazil;
Type of Paper: Regular
Id Paper: 156
Topic: 3
Abstract:
Examples of non-traditional pyrometallurgical processes applied to metals, slags and concentrates are presented, focusing on products valorization, environmental friendly processes and valuable metals production. Niobium concentrate can be refined by selective carbothermic reduction. Niobium powder or niobium sub-oxides powders can be produced by metalothemic or hydrogen reduction. High pure silicon can be produced by plasma, vacuum, reactive gases, slag and controlled solidification treatments. Titaniferous slag can be produced by titanium ore reduction in self-reducing pellets. Steelmaking slags can be valorized by molten slag treatment and appropriated cooling rates. Fundamental aspects of these processes from thermodynamic and kinetic point of view are highlighted showing the huge potential of pyrometallurgy for metallurgical industries.
Keywords:
Metallurgy; Non-ferrous; Recycling; Slag;References:
[1] J. B. Ferreira Neto, “Refino de Concentrado de Niobio Atraves de Reducao Carbotermica”. Ph.D.thesis,Escola Politécnica da USP, São Paulo, Brazil, 2002, 223 p.[2] M. Hino, T. Nagasaka, S. Ban-ya, “Activity of P in -Fe and Phase Diagram of Fe-Fe2P System above 1273 K”. Z. Metallkd, v.88, p.938-944, 1997.
[3] Y. K. Rao, Catalysis in extractive Metallurgy. Journal of Metals. p. 46-50, July 1983.
[4] E.T. Turkdogan, J.V. Vinters, “Catalytic Oxidation of Carbon”. Carbon, Oxford, v.10, p.97-111, 1972.
[5] Y. K. Rao, “The Kinetics of Reduction of Hematite by Carbon”. Metallurgical Transactions, Warrendale, v. 2, p. 1439-1447, May 1971.
[6] E.T. Turkdogan, J.V.Vinters, “Effect of Carbon Monoxide on the rate of oxidation of charcoal, graphite and coke in carbon dioxide”. Carbon, Oxford, v.8, p.39-53, 1970.
[7] C. A. F. Sousa, “The Evolution of FeNb Manufacturing”. Proceedings of the International Symposium Niobium 2001. Orlando, USA. Dec 2-5, 2001, P 89-104.
[8] Methods to partially reduce a Nb metal oxides and oxygen reduced Nb oxides. US Patent No. 6,462,934 - 08/10/2002, inventors: J.L. Kimmel ; R.W. Kitchell and J.A. Fife, assigne: Cabot Corporation.
[9] COMPETING IN THE ENERGY SECTOR ON THE ROAD TO COMPETITIVENESS. September 2011. European Photovoltaic Industry Association.Renewable Energy. www.epia.org
[10] Balanço Energético Nacional 2012. Empresa de Pesquisa Energética.
[11] MARTORANO, M. A., FERREIRA NETO, J. B., OLIVEIRA, T. S. & TSUBAKI, T. O., 2010. Macrosegregation of Impurities in Directionally Solidified Silicon. Metallurgical and Materials Transactions A.
[12] Stefanescu, et al., 1988. Behavior of Ceramic Particles at the Solid-Liquid Metal Interface in Metal Matriz Composites. Metallurgical Transactions A, 19(11), pp. 2847-2855.
[13] Soiland, A.-K., 2004. Silicon for Solar Cells, Trondheim: s.n.
[14] Safarian, Jafar, Tangstad, Merete. Vacuum Refining of Molten Silicon. Metallurgical and Materials Transactions B, Warrendale, V. 43, n.6, p.1427-1445, dec. 2010.
[15] Miki, Takahiro, Morita, Kazuki, Sano, Nobuo. Thermodynamics of phosphorus in molten silicone. Metallurgical and Materials Transactions B, Warrendale, v. 27, n.6, p.937-941. Dec 1996.
[16] Patent application BR 10 2014 023505 1, “Sistema de Modificação de Escória”, 2014.
[17] Y. Kashiwaya, T. Nakauchi, K.S. Pham, S. Akiyama and K. Ishii, “Crystallization Behaviors Concerned with TTT and CCT Diagrams of Blast Furnace Slag Using Hot Thermocouple Technique”, ISIJ International, 47 (1) 44-52 (2007).
[18] S.S. Jung and I.I. Sohn, “Effect of FeO Concentration on the Crystallization of High-Temperature CaO-Al2O3-MgO-FeO Melts”, Am. Cerm. Soc., 96 (4) 1309-1316 (2013).
[19] C. Shi, “Steel Slag – Its Production, Processing, Characteristics and Cementitious Properties”, Journal of Materials in Civil Engineering, 16 230-236 (2004).
[20] M. Gautier, J. Poirier, F. Bodéman, G. Franceschini, E. Véron, “Basic Oxygen Furnace (BOF) Slag Cooling: Laboratory Characteristics and Prediction Calculations”, International Journal of Mineral Processing, 123 94-101 (2013).
[21] M. Tossavainen, F. Engstrom, Q. Yang, N. Menad, M. L. Larsson, B. Bjorkman, “Characteristics of Steel Slag under Different Cooling Conditions”, Waste Management, 27 1335-1344 (2007).
[22] H. G. Ryu, Z.T. Zhang, J.W. Cho, G.H. Wen and S. Sridhar, “Crystallization Behaviors of Slags through a Heat Flux Simulator”, ISIJ International, 50 (8) 1142-1150 (2010).
[23] N.Y. Mostafa, S.A.S El-Hemaly, E.I. Al-Wakeel, S.A. El-Korashy, P.W. Brown, “Characterization and Evaluation of the Hydraulic Activity of Water-Cooled Slag and Air-Cooled slag”, Cement and Concrete Research, 31 899-904 (2001).