Journal of Nuclear Science, Engineering and Technology (JONSAT)
In cooperation with the Iranian Nuclear Society

The Effect of Temperature and Gas Flow Rate on the Carbochlorination Process of ZrO2

Document Type : Research Paper

Authors

K Saberian
Sh Raygan
A Movahhedian
S.A Hosseini Semnani
Abstract
Carbochlorination of ZrO2 is the main part of zirconium production process. In this research the effect of temperature and total gas flow rate on carbochlorination of ZrO2 in the presence of carbon black was investigated. The partial pressure of Cl2 in this study was kept at 0.3 atmosphere. The results showed that ZrO2 conversion is strongly affected by the temperature. It is also shown that at 1223 K, the process is affected by the gas flow rate. The activation energy of the process was 60kCal/mol and the chemical reaction on the oxide surface was the dominant controller of the reaction.

Highlights

  1. 1.    D.M. Pasquevich, “A thermogravimetric analyzer for corrosive atmospheres and its application to the chlorination of Zro2-c mixtures,” Thermochimica acta, 156, 275-283 (1989).

 

  1. 2.     A.J. Oreilly and I.D. Doig, “The kinetics of the chlorination of zirconium dioxide with carbon and chlorine,” J. Inorg. Nucl. Chem., 34, 2487-2495 (1972).

 

  1. 3.    D.M. Pasquevich, A. Caneiro, “On the role of carbon in carbochlorination of refractory oxides,” Thermochimica Acta, 209, 209-222 (1992).

 

  1. 4.    O. Bicerolu and W.H. Gauvin, “The chlorination kinetics of zirconium dioxide in the presence of carbon,” The Can. J. Chem. Eng, 58, 357-366 (1980).

 

  1. 5.    P.K. Jena, M.L. Dosreis, “Kinetics of chlorination of zirconia in mixture with petroleum coke by chlorine gas,” Metal. Trans. B, 30B, 375 (1999).

 

  1. 6.    ش. رایگان، ک. صابریان، ع. موحدیان، ”طراحی و ساخت دستگاه سنجش  ترموگراویمتریک، مخصوص محیطهای خورنده و کاربرد آن برای کربوکلریناسیون دی اکسید زیرکونیم،“  نهمین کنگره انجمن مهندسین متالورژی ایران، 358-350(1384).                                                            

 

  1. 7.     P.K. Jena and T.F. Villela, “Studies on kinetics of low temperature chlorination of ZrO2 by gaseous carbon tetrachloride,” Metal. Trans. B, 26, 235-240 (1995).

 

  1. 8.     C. Chu., “Parallel plate model for non-catalytic gas-solid reactions, “Chem. Eng.Sci, 27, 367-373 (1972).

 

 

Keywords

Carbochlorination
Zirconium Dioxide
Temperature
Briquette
  1. 1.    D.M. Pasquevich, “A thermogravimetric analyzer for corrosive atmospheres and its application to the chlorination of Zro2-c mixtures,” Thermochimica acta, 156, 275-283 (1989).

 

  1. 2.     A.J. Oreilly and I.D. Doig, “The kinetics of the chlorination of zirconium dioxide with carbon and chlorine,” J. Inorg. Nucl. Chem., 34, 2487-2495 (1972).

 

  1. 3.    D.M. Pasquevich, A. Caneiro, “On the role of carbon in carbochlorination of refractory oxides,” Thermochimica Acta, 209, 209-222 (1992).

 

  1. 4.    O. Bicerolu and W.H. Gauvin, “The chlorination kinetics of zirconium dioxide in the presence of carbon,” The Can. J. Chem. Eng, 58, 357-366 (1980).

 

  1. 5.    P.K. Jena, M.L. Dosreis, “Kinetics of chlorination of zirconia in mixture with petroleum coke by chlorine gas,” Metal. Trans. B, 30B, 375 (1999).

 

  1. 6.    ش. رایگان، ک. صابریان، ع. موحدیان، ”طراحی و ساخت دستگاه سنجش  ترموگراویمتریک، مخصوص محیطهای خورنده و کاربرد آن برای کربوکلریناسیون دی اکسید زیرکونیم،“  نهمین کنگره انجمن مهندسین متالورژی ایران، 358-350(1384).                                                            

 

  1. 7.     P.K. Jena and T.F. Villela, “Studies on kinetics of low temperature chlorination of ZrO2 by gaseous carbon tetrachloride,” Metal. Trans. B, 26, 235-240 (1995).

 

  1. 8.     C. Chu., “Parallel plate model for non-catalytic gas-solid reactions, “Chem. Eng.Sci, 27, 367-373 (1972).

 

 

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