Slag – Refractory Interactions During Ilmenite Smelting: Thermodynamic Simulation and Experimental Data
- 5 Downloads
The interaction of four types of commonly used refractories (i.e., burned magnesite brick, magnesia carbon brick, corundum castable, and SiC castable) with slag formed in the smelting of titanium (wt. [TiO2] = 80%) in an electric furnace at the Panzhihuan Iron and Steel plant was studied. Erosion of refractories by titanium slag was calculated using the FactSage software program. The experiment was carried out in an electric furnace based on calculation results. Meanwhile, the results of the thermodynamic simulation showed that the interaction of SiC castable with titanium slag formed TiC with a high melting point, which can prevent the slag from penetrating more deeply into the refractory and exhibits good erosion resistance. In terms of erosion resistance to titanium slag, different refractory materials can be arranged in order from most to least erosion resistant as follows: SiC castable → magnesia carbon brick → magnesite brick → corundum castable. The results of theoretical calculations are in good agreement with the experiment results.
Keywordstitanium slag erosion FactSage software program thermodynamics thermodynamic simulation
The authors express their special gratitude to the National Natural Science Foundation of China (Grant No. 51404080), the Science and Technology Fund of Guizhou Province, China (Guizhou Grant J Word No.  2073) and the Doctoral Program of Guizhou University (University of Guizhou J Word No.  37).
- 1.H. G. Du, G. T. Xu, and R. S. Diao, “Microstructure analysis of iron corrosion lining of titanium bearing blast furnace slag,” Iron Steel Vanadium Titanium, 6(2) (2002).Google Scholar
- 2.H. G. Du, et al., “Study on erosion of blast furnace slag by blast furnace slag,” Iron Steel, 4(1), 56 – 59 (2003).Google Scholar
- 3.J. Li, “Study on the mechanism of slag corrosion and improvement of material properties of blast furnace in Panzhihua Iron & Steel Co.” (2002).Google Scholar
- 5.J. Qin, et al., “Melting reduction furnace lining erosion cause analysis and improvement measures,” Refractory Material, 4, No. 2, 152 – 154 (2013).Google Scholar
- 6.A. M. Garbers-Craig and P. C. Pistorius, “Slag-refractory interactions during the smelting of ilmenite,” South African Journal of Science, 102(11/12), 575 – 581 (2006).Google Scholar
- 7.S. B. Sang, et al., “Discussion on the furnace lining material of high titanium pellet melting furnace,” Silicate Bulletin, 6(4) (2014).Google Scholar
- 9.W. Hu, et al., “Different matrix combined with the research on corrosion resistance of MgO–C brick for slag,” Silicate Bulletin, 6(1) (2011).Google Scholar
- 10.X. L. Fan, et al., “Slag resistance of MgO–C brick with different carbon content,” Journal of Wuhan University of Science and Technology, 5(4), 394 – 398 (2009).Google Scholar
- 11.H. C. Li, et al., “Effect of electromagnetic field on corrosion resistance of MgO–C refractories,” Journal of Silicate, 6(3), 452 – 457 (2011).Google Scholar
- 13.Z. Y. Chen, “Analysis of the corrosion of MgO–CaO materials by the phase diagram,” J. Metals, 8(2), 62 – 69 (1983).Google Scholar