Characterization and Valorization of Kanbara Reactor Desulfurization Waste Slag of Hot Metal Pretreatment
详细信息 查看全文
- 作者：Zhibo Tong ; Guojun Ma ; Xun Cai ; Zhengliang Xue ; Wei Wang…
- 关键词：Waste ; Valorization ; Recycling ; Desulfurization slag ; Hot metal pretreatment
- 刊名：Waste and Biomass Valorization
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：7
- 期：1
- 页码：1-8
- 全文大小：1,418 KB
- 参考文献：1.Ward, R.G.: An Introduction to the Physical Chemistry of Iron & Steel Making. Edward Arnold Ltd., London (1962)
2.The Chinese Society for Metals: China Iron & Steel Association: Technology Roadmap on Chinese Steel Industry 2011–2020. Metallurgical Industry Press, Beijing (2012). (in Chinese)
3.Zhang, M., Xu, A.: Comparison of application of KR method with that of injection method in hot metal desulfurization. Steelmaking 25(5), 73–77 (2009). (in Chinese)
4.Shi, M., Yu, H.: Characteristics of hot metal pretreatment KR desulphurized sludge and development of recycling technology of resources. Spec. Steel 6, 42–44 (2013). (in Chinese)
5.Li, G., Guo, M.: Current development of slag valorisation in China. Waste Biomass Valoriz. 5(3), 317–325 (2014)CrossRef
6.Das, B., Prakash, S., Reddy, P.S.R., Misra, V.N.: An overview of utilization of slag and sludge from steel industries. Resour. Conserv. Recycl. 50, 40–57 (2007)CrossRef
7.Han, Y., Wang, L., Li, L., Ren, F., Zhao, C., Liu, X.: Comprehensive utilization of slag from desulfurization and slag skimming processes of Ansteel. Min. Metall. Eng. 29(5), 29–32 (2009). (in Chinese)
8.Wang, X., Li, Y.: Experimental study on the iron recovery from desulfurization slag with ball milling method. In: Proceedings of 18th China Steelmaking Conference. Xi’an (2014). (in Chinese)
9.Sheng, G., Huang, P., Wang, S., Chen, G.: Potential reuse of slag from the Kambara Reactor desulfurization process of iron in an acidic mine drainage treatment. J. Environ. Eng. 140(7), 04014023-1–04014023-6 (2014)CrossRef
10.Takehama, R.: Establishment of desulfurization slag recycling process. CAMP-ISIJ 18, 222 (2005)
11.Nakai, Y., Kikuchi, N., Iwasa, M., Nabeshima, S., Kishimoto, Y.: Development of slag recycling process in hot metal desulfurization with mechanical stirring. Steel Res. Int. 80(10), 727–732 (2009)
12.Niedringhaus, J.C., Fruehan, R.J.: Reaction mechanism for the CaO-Al and CaO-CaF2 desulfurization of carbon-saturated iron. Metall. Trans. B 19B(2), 261–268 (1988)CrossRef
13.McFeaters, L.B., Fruehanb, R.J.: Desulfurization of bath smelter metal. Metall. Trans. B 24B(3), 441–447 (1993)CrossRef
14.Aguiar, F.N., Grillo, F.F., Tenório, J.A.S., Oliveira, J.R.: Hot metal desulfurization by marble waste and fluorspar. REM Rev. Esc. Minas 65(2), 233–239 (2012)CrossRef
15.Bu, E., Li, Y., Wang, X., Xu, X.: The Comprehensive recovery and utilization of desulfurization slag. Proceedings of 2013 National Conference on Metallurgical Energy and Environmental Protection. Benxi (2013). (in Chinese)
16.Zou, C., Liu, F., Xu, J., Wan, K.: Investigation on the effect of flux particle size on hot metal desulfurization. Iron Steel 48(12), 30–35 (2013). (in Chinese)
17.Wilhel, P., Huber, P., Michael, M.: Steel desulphurisation and sulphur bonding in solidified ladle slags. Steel Res. 2, 91–98 (2003)
18.Peng, J., Wu, J.H., Yang, X.Y.: Analysis on experimental state of sulphur of the molten iron desulfurization grilled slag in Wuhan Iron and Steel Corporation (WISCO). World Build. Mater. 33(5), 4–8 (2012). (in Chinese)
19.Ma, G., Garbers-Craig, A.M.: Cr (VI)-containing electric furnace dusts and filter cake from a stainless steel waste treatment plant, Part I: characteristics and microstructure. Ironmak. Steelmak. 33(3), 229–237 (2006)CrossRef
20.Halikia, I., Zoumpoulakis, L., Christodoulou, E., Prattisn, D.: Kinetic study of the thermal decomposition of calcium carbonate by isothermal methods of analysis. Eur. J. Miner. Process. Environ. Prot. 1(2), 89–102 (2001)
21.Davis, N.H., Hayhurst, A.N.: On the formation of liquid melts of CaS and CaSO4 and their importance in the absorption of SO2 by CaO. Combust. Flame 106, 359–362 (1996)CrossRef
22.Chatterjee, A.K., Zhmoidin, G.I.: The phase equilibrium diagram of the system CaO-Al2O3-CaF2. J. Mater. Sci. 7(1), 93–97 (1972)CrossRef
23.Xu, J., Su, L., Zou, C., Weng, W., Sheng, M.: Effect of alumina on hot metal desulfurization with the CaO based desulfurization flux. Steelmaking 30(6), 32–36 (2014). (in Chinese)
24.Ghosh, A.: Secondary Steelmaking: Principles and Applications. CRC Press, Boca Raton (2001) - 作者单位：Zhibo Tong (1)
Guojun Ma (1)
Xun Cai (1)
Zhengliang Xue (1)
Wei Wang (1)
Xiang Zhang (1)
1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, China - 刊物类别：Engineering
- 刊物主题：Engineering, general
Environment
Waste Management and Waste Technology
Industrial Pollution Prevention
Renewable and Green Energy
Environmental Engineering - 出版者：Springer Netherlands
- ISSN：1877-265X
文摘
The desulfurization waste slag from hot metal pretreatment process is a typical solid waste generated in the integrated steel company. About 7- to 9-kg waste slag is produced per ton hot metal treated in the Kanbara Reactor (KR) desulfurization process, and the waste slag contains approximately 40–60 % CaO and large amounts of iron. Therefore, effectively valorization of these waste slags is significant for resources reutilization and environmental protection. A novel valorization process of KR desulfurization waste slag into iron-containing substances and desulfurization agent for hot metal pretreatment was investigated. Magnetic separation method was conducted to recovery iron-containing substances from the KR waste slag. Various techniques such as XRD, TG-DSC, SEM–EDS were used to characterize the non-magnetic (NM) waste slag. The pyrometallurgical recycling experiments of NM waste slag were performed in a tube furnace after considering various parameters, such as reaction temperature, ratio of slag volume and slag composition. The results show that ~56 wt% of the KR slag can potentially be recycled as an iron-bearing raw material for steelmaking process. The major components of NM KR waste slag are calcium, silicon and iron oxides, and ~70 vol% of NM waste slag particles are <100 μm. The major crystalline phases present in NM waste slag are C, Ca (OH)2, CaSO4, CaF2, CaCO3, CaS and Ca2SiO4. A mass loss of ~20 wt% from room temperature to 1573 K is possibly due to the vaporization of moisture, water of crystallization and fluoride, decomposition of carbonates and CaSO4. The desulfurization ratio in pig iron increases with reaction time, which indicates that the NM waste slag still has desulfurization ability. Moreover, the desulfurization ratio increases with temperature and ratio of slag volume. It is also found that the apparent desulfurization rate constants are in the range between 0.007 and 0.016 min−1. Keywords Waste Valorization Recycling Desulfurization slag Hot metal pretreatment