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Ironmaking
ArticleName Increase of duration of blast furnace operation and its economical expression via usage of synthetic titanium dioxide
ArticleAuthor W. Hartig, D. Amirzadeh-Asl, D. Funders
ArticleAuthorData

Rogesa Roheisengesellschaft Saar mbH (Dillingen, Germany):

Hartig W., Dr., Director of Blast Furnace Production

 

vormals Huntsman Pigments and Additives (Duisburg, Germany):
Amirzadeh-Asl D., (at the moment of paper preparation), e-mail: d.amirzad@hotmail.com

 

GSR Gesellschaft für syntetische Rohstoffe mbH (Moers, Germany):
Fünders D., Dr., CEO

Abstract

The project “Hearth protection in BF by using of Ticontaining materials” was focused on investigations of charging with the burden (lump ilmenite) and tuyère injection (rutilit) in order to assist the blast furnace operators to optimize the hearth protection, prolongation of campaign and economic effects of different technologies for addition of titaniumcontaining material. The results show that the tuyère injection of synthetic TiO2 products is much more effective than charging lump ilmenite with the burden. The efficiency of the solution of the TiO2 in the hot metal by using rutilit is three times higher than with lump ilmenite. Additionally the tuyère injection can be used very effectively as a preventive measure for hearth protection and also as local measure at acute damaged zones (hot spot) in the BF hearth. The use of synthetic titanium products via tuyère injection instead of addition of lumpy ilmenite via burden has significant advantages:
• fewer occurrences of hot spots in the hearth and less danger of hearth breakouts;
• higher availability and productivity of the blast furnace;
• prolongation of the campaign and therefore less capital costs;
• improved selling of the granulated slag to the cement industry.

keywords Blast furnace, hearth, ilmenite, synthetic titanium-containing material, slag, rutilite, pulverized coal, titanium dioxide, injection
References

1. Kowalski, W.; Lüngen, H. B.; Stricker, K. P.: Stahl u. Eisen. 1999. Vol. 119. No 4, p. 119/28.
2. Preuer, A.; Winter, J.; Hiebler, H.: Computation of the erosion in the hearth of blast furnace, Steel Res. 63 (1992) No 4, p. 147/51.
3. Datta, K.; Sen, P. K.; Gupa, S. S.; Chatterjee, A.: Effect of titania on the characteristics for blast furnace. Steel Res. 64 (1993), p. 232/38.
4. Okada, T.; Kuwano, K.; Schimomura, K.; Hori, H.; Miyatani, H.; Ochiai, Y.; Uemura, K.: Protection of blast furnace hearth refractories by TiO2 injection through tuyères, Proc. 50th Ironmaking Conf., 14−17 April 1991, Washington D.C., USA, p. 307/12.
5. Pochwisnew, A. N.; Abramow, W. S.; Krasawzew, N. I.; Leonidow, N. K.: Der Hochofenbetrieb, VEB Verlag Technik Berlin, 1954.
6. Durrer, R.; Volkert, G.: Metallurgie der Ferrolegierungen, 2nd ed., Springer Verlag, Berlin, Heidelberg, New York, 1972.
7. Garcia, A.; Rodriguez, R.; Borrego, J.: Monitoring and maintenance of BF hearth, Proc. AHMSA experience Ironmaking Conf., 20−23 March 1994, Chicago, USA, p. 333/39.
8. Grabietz, H. G.; Altland, R.; Schmucker, G.; Amirzadeh-Asl, D.; Bauer, W.: Injection test of rutilit AT as a TiO2-containing material at BF A at HKM, Duisburg, Germany, Stahl u. Eisen. 2002. Vol. 122. No 9, p. 56.
9. Bürgler, T.; Brunnbauer, G.; Ferstl, A.; Zeirzer, C.; Pillmair, G.: Injection for TiO2 components and ironmaking by-products at VASL BF A, 4th Europ. Coke and Ironmaking Congr., 19−21 June 2010, Paris — La Defense, France.
10. Dierich, J. C.; Bauer, W.; Amirzadeh-Asl, D.; Fünders, D.: Eigenschaften synthetischer titanhaltiger Materialien zur Verschleißminderung in Hochöfen, Stahl u. Eisen. 1999. Vol. 119. No 8, p. 85/90.
11. Amirzadeh-Asl, D.; Restivo, V.; Fünders, D.: Properties of synthetic TiO2 containing materials for the blast furnace: Enhanced BF availability, Proc. AISTech 2006, Cleveland, USA, 1–4 May 2006.
12. Hartig, W.; Amirzadeh-Asl, D.; Fünders, D.: Use of synthetic titanium products for protection of the hearth of Rogesa blast furnaces, Technical contribution to XXXVII Ironmaking and Raw Materials Seminar, Salvador-BA, Brazil, September 2007, p. 456/69.
13. Hartig, W.; Amirzadeh-Asl, D.; Fünders, D.: Blast furnace hearth protection by simultaneous injection of pulverized coal and synthetic titanium dioxide products, Proc. AISTech 2009, St. Louis, USA, 4−7 May 2009.
14. Hartig, W.; Amirzadeh-Asl, D.; Fünders, D.: Injection of pulverized coal and synthetic titanium dioxide products. Proc. AISTech 2009, St. Louis, USA, 4−7 May 2009.
15. Liceage, F.; Vidales, G.; Mata, R.: 30 million in the hearth of blast furnace No 5 at AHMSA Mexico, Proc. AISTech 2010, Pittsburgh, USA, 3−6 May 2010.
16. Hartig, W.; Amirzadeh-Asl, D.; Fünders, D.: Result of co-injection of PCI and synthetic titaniumdioxide products for protection of the hearth at Rogesa BF No 5 after stop for relining, Proc. AISTech 2011, Indianapolis, USA, 2−5 May 2011.
17. Eisen, P.; Gertz, J.; Grabietz, G.; Tauchert, S.; Schulte, S.; Amirzadeh-Asd, D.; Fuenders, D.: Test of co-injection petrol coke containing synthetical TiO2 with premix pulverized coal for hearth protection of Hüttenwerke Krupp Mannesmann blast furnaces, 8th Ironmaking Conf. IAS, Rosario, Santa Fe, Argentina, 1−3 Nov 2011.
18. Santos, G. S.; Costa Manso, G. A.; Oliveira, M. A. G.; Fernandes, M. V.; Amirzadeh-Asl, D.; Fuenders, D.: Hearth protection of blast furnace no 3 of Usiminas by injection of titanium dioxide products, 41st Seminar on Iron Mining Reduction, ABM, Vitória, Brazil, 12−15 Sept 2011.
19. Borrego, J. A.; Villarreal, M.; Castro, L.; Veliz, J. A.; Teubl, W.; Improvement in control process and hearth maintenance in blast furnace No 5 at AHMSA, Proc. AISTech 2011, Indianapolis, USA, 2−5 May 2001.

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