Effect of Temperature on Segregation Coefficients of Impurities in Phosphorus

刘雪峰; 李军; 罗建洪; 周堃; 杨兆鹏

doi:10.1016/S1004-9541(14)60044-6

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Effect of Temperature on Segregation Coefficients of Impurities in Phosphorus

分离科学与工程 | Updated：2026-01-06

- Effect of Temperature on Segregation Coefficients of Impurities in Phosphorus
- Chinese Journal of Chemical Engineering Vol. 22, Issue 3, Pages: 294-2981004-954160044-6(2014)
- Affiliations：
  
  2 College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology,Chengdu,China,610059
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(14)60044-6
  CLC：
- Published：2014
- Accepted：
Scan QR Code
LIU Xuefeng, LI Jun, LUO Jianhong, ZHOU Kun, YANG Zhaopeng. Effect of Temperature on Segregation Coefficients of Impurities in Phosphorus[J]. Chin.J.Chem.Eng., 2014, 22(3): 294-298.
DOI：

LIU Xuefeng, LI Jun, LUO Jianhong, ZHOU Kun, YANG Zhaopeng. Effect of Temperature on Segregation Coefficients of Impurities in Phosphorus[J]. Chin.J.Chem.Eng., 2014, 22(3): 294-298. DOI： 10.1016/S1004-9541(14)60044-6.

摘要

Abstract

The present work is focused on the relationship between effective segregation coefficient k

eff

and temperature of melting zone for purification of phosphorus by zone melting method. Values of k

eff

at four temperatures of melting zone are obtained for zone pass n =1 at travel velocity of molten zone v =5×10

-3

m·h

-1

and initial impurity concentration C

≤10 μg·g

-1

. lnk

eff

is a linear function of 1/T. The k

eff

values of Al

Cd and Sb increase with temperatures while that of Mg is almost constant. The purification is acceptable at lower temperature of melting zone such as 323 K. The variations of enthalpy and entropy between impurities and phosphorus in the liquid and solid phases are also presented.

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