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Purpose: Metallurgical process generates many solid, gaseous and liquid wastes. Nowadays when environmental protection is one of the most important problems and when pollution limits are very tight as well, problem of the metallurgical wastes is a strategic one. Design/methodology/approach: In present days the metallurgical and foundry plant have to utilize their own wastes, especially these which are the most dangerous and toxic or have to render harm of its and transfer to another industry branch for further utilization. Nowadays the issue of wastes management has the place both in industrial practice and scientific field too. The presented work is a result of such an approach, where a cooperation between scientific and industrial partners gives good economical and ecological results. Findings: One of the very efficient method of utilization of furnace dusts from any melting furnace or the finest fractions of charging materials is pneumatic powder injection directly into molten metal bath.The method is pretty easy and cost effective in various conditions and its flexibility allows to implement it in almost every foundry or metallurgical plant. Research limitations/implications: Further experiments should be carried out to solve some additional problems appearing during powder injection processes to make them more efficient in various technological conditions. Practical implications: Nowadays in Poland operate more than ten industrial stands for powdered carburizers injection, installation of furnace dust injection back to the melting furnace or pneumatic inoculation of alloys (mostly in cast iron foundries). Originality/value: The paper presents a few modern solutions for recycling and utilization of furnace dusts (in cupolas and EAF’s) and pneumatic carburization with use of powdered carburizers which are very often in form of grinded graphite electrodes wastes. All of the mentioned results and method had been developed in Department of Foundry and some of the designs had been previously patented.
Wydawca
Rocznik
Tom
Strony
118--124
Opis fizyczny
Bibliogr. 22 poz.
Twórcy
autor
autor
- Division of Foundry, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Towarowa 7, 44-100 Gliwice, Poland, jan.jezierski@polsl.pl
Bibliografia
- [1] M. Holtzer, Influence of the cast iron melting processes on environment using BAT, Archives of Foundry Engineering 7/4 (2007) 83-88.
- [2] M. Holtzer, I. Kargulewicz, A. Kijas, Possibility of utilization of cupola dust, Acta Metallurgica Slovaca 7 (2001) 9-21.
- [3] K. Smyksy, M. Holtzer, Possibilities of briquetting process using for cupola dust utilization, Archives of Foundry 2/3 (2002) 121-128.
- [4] M. Holtzer, M. Niesler, C. Podrzucki, M. Rupniewski, Using cupola for recycling foundry dusts, Archives of Foundry 6/20 (2006) 111-121.
- [5] R. Nowosielski, A. Kania, M. Spilka, Integrated recycling technology as a candidate for best available techniques, Archives of Materials Science and Engineering 32/1 (2008) 49-52.
- [6] M. Spilka, A. Kania, R. Nowosielski, Integrated recycling technology, Journal of Achievements in Materials and Manufacturing Engineering 31/1 (2008) 97-102.
- [7] K. Mijanovic, Reducing dangerous waste by applying low-waste technologies, Journal of Achievements in Materials and Manufacturing Engineering 29/2 (2008) 195-198.
- [8] Y. Kakuta, K. Hirano, M. Sugano, K. Mashimo, Study on chlorine removal from mixture of waste plastics, Waste Management 28 (2008) 615-621.
- [9] R.V. Vainola. L.E.K. Holappa, P.H.J. Karvonen, Modern steelmaking technology for special steels, Journal of Materials Processing Technology 53 (1995) 453-465.
- [10] M. Ribbenhed, M. Thoren, C. Sternhufvud, CO2 emission reduction costs for iron ore-based steelmaking in Sweden, Journal of Cleaner Production 16 (2008) 125-134.
- [11] Y. Zhang, P.V. Barr, T.R. Meadowcroft, Continuous scrap melting in a short rotary furnace, Minerals Engineering 21 (2008) 178-189.
- [12] K. Janerka, Parameters of the process in pneumatic liquid metal carburizing, Proceedings of the 12th International Scientific Conference “Achievements in Mechanical and Materials Engineering” AMME’2003, Gliwice-Zakopane, 2003, 403-408.
- [13] J. Jezierski, J. Szajnar, Method and new lance for powder injection into liquid alloys, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 349-352.
- [14] J. Jezierski, J. Szajnar, Character of diphase stream force in powder injection technique, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 455-458.
- [15] J. Jezierski, K. Janerka, Pneumatic powder injection technique as a tool for wastes utilization, International Journal of Environment and Waste Management 2/6 (2008) 636-646.
- [16] D. Bartocha, K. Janerka, J. Suchoń, Charge materials and technology of melt and structure of gray cast iron, Journal of Materials Processing Technology 162-163 (2005) 465-470.
- [17] A.G. Borrego, E. Osorio, M.D. Casal, A.C.F. Vilela, Coal char combustion under CO2-rich atmosphere: Implications for pulverized coal injection in a blast furnace, Fuel Processing Technology 89 (2008) 1017-1024.
- [18] W. Neumann, K. Wolf, Injection of materials into the cupola, Casting Plant Technology International 13/4 (1997) 14-17.
- [19] E. Sheepers, J.J. Eksteen, C. Aldrich, Optimization of the lance injection desulphurization of molten iron using dynamic modeling, Minerals Engineering 19 (2006) 1163-1173.
- [20] S. Ghorai, G.G. Roy, S.K. Roy, Submerged liquid slag injection in steel melt: scale up study using cold model and dimensional analysis, Ironmaking and Steelmaking 3/5 (2004) 401-408.
- [21] T. Han. A. Levy, H. Kalman, Y. Peng, Model for dilute gas-particle flow in constant-area lance with heating and friction, Powder Technology 112 (2000) 283-288.
- [22] J.L. Xia, T. Ahokainen, L. Holappa, Study of flow characteristics in a ladle with top lance injection, Progress in Computational Fluid Dynamics 1/4 (2001) 178-187.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BSL7-0034-0016