组合式流化床中以高钙镁钛渣为原料制取TiCl4

CIESC Journal

• REACTION KINETICS, CATALYSIS • 下一篇

组合式流化床中以高钙镁钛渣为原料制取TiCl₄

徐聪^a,b;袁章福^a; 王晓强^a

^aInstitute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China
^b Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-06-28 发布日期:2006-06-28
通讯作者: 徐聪

Preparation of TiCl₄ with the Titanium Slag Containing Magnesia and Calcia in a Combined Fluidized Bed

XUCong^a,b;YUANZhangfu^a; WANGXiaoqiang^a

^a Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China
^b Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

Received:1900-01-01 Revised:1900-01-01 Online:2006-06-28 Published:2006-06-28
Contact: XU Cong

摘要/Abstract

摘要： This paper describes a new method for producing TiCl4 by chloridizing materials of high content CaO and MgO, in which a combined fluidized bed is used as a reactor to avoid agglomeration between particles caused by molten CaCl2 and MgCl2. The combined fluidized bed consists of at least a riser tube and a semi-circulating fluidized bed. Two kinds of high titanium slag, in which the total mass content of CaO and MgO is 2.03% and 9.09% respectively, are employed to examine the anti-agglomeration effect and the conversion of the materials when the temperature ranges are between 923.15K and 1073.15K, gas apparent velocity 0.7—1.1m•s－1, and inlet amount of solid materials is 4.6—7.0kg•h－1. It is found that the anti-agglomeration effect in the combined fluidized bed is sat-isfactory and the new method can achieve a TiCl4 production capacity of 14.0—75.4t•m－2•d－1 in relation to 25.0—40.0t•m－2•d－1 from the conventional bubble bed. Furthermore, low-temperature chloridization, for example, at 923K or 973K, can also be used to produce TiCl4 and avoid agglomeration.

关键词: titanium tetrachloride;titanium slag;combined fluidized bed;alcium oxide;magnesium oxide

Abstract: This paper describes a new method for producing TiCl4 by chloridizing materials of high content CaO and MgO, in which a combined fluidized bed is used as a reactor to avoid agglomeration between particles caused by molten CaCl2 and MgCl2. The combined fluidized bed consists of at least a riser tube and a semi-circulating fluidized bed. Two kinds of high titanium slag, in which the total mass content of CaO and MgO is 2.03% and 9.09% respectively, are employed to examine the anti-agglomeration effect and the conversion of the materials when the temperature ranges are between 923.15K and 1073.15K, gas apparent velocity 0.7—1.1m•s－1, and inlet amount of solid materials is 4.6—7.0kg•h－1. It is found that the anti-agglomeration effect in the combined fluidized bed is sat-isfactory and the new method can achieve a TiCl4 production capacity of 14.0—75.4t•m－2•d－1 in relation to 25.0—40.0t•m－2•d－1 from the conventional bubble bed. Furthermore, low-temperature chloridization, for example, at 923K or 973K, can also be used to produce TiCl4 and avoid agglomeration.

Key words: titanium tetrachloride, titanium slag, combined fluidized bed, calcium oxide, magnesium oxide

徐聪,袁章福, 王晓强. 组合式流化床中以高钙镁钛渣为原料制取TiCl₄[J]. CIESC Journal.

XUCong,YUANZhangfu, WANGXiaoqiang. Preparation of TiCl₄ with the Titanium Slag Containing Magnesia and Calcia in a Combined Fluidized Bed[J]. .

参考文献

1    Li, B., Yuan, Z.F., Li, W.B., Xu, C., “A new method for deoxidization and chlorination of refined ilmenite with high magnesia and calcia contents”, China Particulology, 2, 84—88( 2004).
2    Yuan, Z.F., Xu, C., Zheng, S.H., Zhou, J.C., “Compre-hensive utilization of titanium resources in Panzhihua”, Modem Chemical Industry, 23, 1—4, 5(2003). (in Chi-nese)
3    Wang, J.L., “Development and utilization with vanadium mineral and titanium mineral”, Complex Utilization of Mineral, 1, 23—29(1997). (in Chinese)
4    Rare Metal Handbook Editorial Committee, Rare Metal Handbook，Metallurgical Industry Press，Beijing (1995). (in Chinese)
5    Den, G.Z., “Quality of ilmenite and select of material for producing titanium white”, Vanadium and Titanium, 1, 36—40(1994). (in Chinese)
6    Perkins, E.C., “Fluidized bed chlorination of titaniferous slag and ores”, Bureau of Mines Report 6317, 1—13(1963).
7    Yang, F.L., Hlavacek, V., “Effective extraction of tita-nium from rutile by a low-temperature chloride process”, AIChE J., 46, 355—360(2000).
8    Yang, F.L., “Recycling titanium from Ti-waste by a low-temperature extraction process”, AIChE J., 46,  2499—2503(2000).
9    Luckos, A., Mitchell, D., “The design of a circulating fluidized-bed chlorinator at Mintek”, In: IFSA 2002 In-dustrial Fluidization South Africa, Luckos, A., den Hoed, P., Eds., Johannesburg, South Africa, 147—160(2002).
10    Tardos, G., Mazzone, D., Pfeffer, R., “Destabilization of fluidized beds due to agglomeration Part I”, Can. J. Chem. Eng., 63, 377—383(1985).
11    Li, W.B., Yuan, Z.F., Wang, Z.L., Yang, C.Y., Huang, W.L., Fan, J.F., Zhu, S.Y., Liao, D.H., Hu, H.F., Wang, J., Liao, R.H., “Study on the characteristics of a down-stream serial fluidized bed”, Science & Technology in Chemical Industry, 11, 24—28(2003). (in Chinese)
12    Morris, A.J., Jensen, R.F., “Fluidized-bed chlorination rates of Australian rutile”, Metallurgical Transactions B, 7B, 89—93(1976).
13    Lin, C., Lee, T., “On the chlorination of titanium diox-ide-carbon pellet II”, J Chin. I. Ch. E., 17, 119—123(1986).
14    Barin, I., Schuler, W., “On the kinetics of the chlorina-tion of titanium dioxide in the presence of solid carbon”, Metallurgical Transactions B, 11B, 199—207(1980).
15    Wen, W.G., “Study on mathematical modeling of fluid-ized-bed without perforated-plate and its industrial ap-plication”, Journal of Guangdong Non-Ferrous Metals, 9, 18—24(1999). (in Chinese)

组合式流化床中以高钙镁钛渣为原料制取TiCl₄

Preparation of TiCl₄ with the Titanium Slag Containing Magnesia and Calcia in a Combined Fluidized Bed

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价