Possibility of Sulfur Removal from Ladle Slag by Oxidation in the Temperature Range 1373-673?K
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- 作者：Carl Allertz ; Du Sichen
- 关键词：Sulfur ; Ladle slag ; Desulfurization ; Steelmaking
- 刊名：Journal of Sustainable Metallurgy
- 出版年：2015
- 出版时间：September 2015
- 年：2015
- 卷：1
- 期：3
- 页码：229-239
- 全文大小：1172KB
- 参考文献：1.Kobayashi K, Hiraki T, Nagasaka T (2012) Oxidation of pure solid CaS with Ar–O2 gas mixture. High Temp Mater Process 31(4-):667-73
2.Lynch DC, Elliott JF (1980) Analysis of the oxidation reactions of CaS. Metall Trans B 11B:415-25CrossRef
3.Agrawal B, Yurek GJ, Elliott JF (1983) Kinetics and mechanism of the desulfurization of liquid blast furnace slags by Ar–H2O gas mixtures. Metall Trans B 14B:221-30CrossRef
4.Pelton AD, See JB, Elliott JF (1974) Kinetics of evolution of SO2 from hot metallurgical slags. Metall Trans 5:1163-171CrossRef
5.Hiraki T, Kobayashi J, Urushibata S, Matsubae K, Nagasaka T (2012) Removal of sulfur from CaF2 containing desulfurization slag exhausted from secondary steelmaking process by oxidation. Metall Trans B 43B:703-09CrossRef
6.Kowalski M, Spencer PJ, Neuschütz (1995) Phase diagrams. In: Slag atlas, 2nd edn. Verlag Stahleisen GmbH, Düsseldorf, pp 21-12
7.Turkdogan ET (1980) Physical chemistry of high temperature technology. Academic press, New York
8.Turkdogan ET, Pearce ML (1963) Kinetics of sulfur reaction in oxide melt–gas systems. Trans Metall Soc AIME 227:940-49 - 作者单位：Carl Allertz (1)
Du Sichen (1)
1. Department of Materials Science and Engineering, KTH Royal Institute of Technology, 100 44, Stockholm, Sweden - 刊物类别：Metallic Materials; Sustainable Development; Industrial Chemistry/Chemical Engineering;
- 刊物主题：Metallic Materials; Sustainable Development; Industrial Chemistry/Chemical Engineering;
- 出版者：Springer International Publishing
- ISSN：2199-3831
文摘
Experiments were conducted to investigate the possibility of removing sulfur from used ladle slag by oxidation. Slag samples (solid, two-phase mixture, and liquid with a small fraction of solid MgO particles) were subjected to an oxygen-rich atmosphere in the temperature range 1373-673 K. The sulfur removal from the samples of solid and two-phase mixture was found to be a slow process due to the slow diffusion. The sulfur removal was found to have little dependence on temperature in the range 1373-573 K. When the slag was mostly liquid (at 1673 K), the sulfur removal was significantly increased. More than 85 % of the sulfur could be removed after 60 min of oxidation in pure oxygen. An increase in oxygen partial pressure was found to increase the desulfurization slightly. Increasing the Al2O3 content in the slag decreased the degree of sulfur removal. Keywords Sulfur Ladle slag Desulfurization Steelmaking