Phase relations, activities and minor elements distribution in Fe-Pb-As and Fe-Pb-Sb systems saturated with carbon at 1473K

Voisin, Leandro, Henao, Hector M., Hino, Mitsuhisa and Itagaki, Kimio (2005) Phase relations, activities and minor elements distribution in Fe-Pb-As and Fe-Pb-Sb systems saturated with carbon at 1473K. Materials Transactions, 46 12: 3030-3036. doi:10.2320/matertrans.46.3030


Author Voisin, Leandro
Henao, Hector M.
Hino, Mitsuhisa
Itagaki, Kimio
Title Phase relations, activities and minor elements distribution in Fe-Pb-As and Fe-Pb-Sb systems saturated with carbon at 1473K
Journal name Materials Transactions   Check publisher's open access policy
ISSN 1345-9678
Publication date 2005-01-01
Sub-type Article (original research)
DOI 10.2320/matertrans.46.3030
Open Access Status
Volume 46
Issue 12
Start page 3030
End page 3036
Total pages 7
Place of publication Sendai, Japan
Publisher Japan Institute of Metals
Language eng
Subject 091407 Pyrometallurgy
Abstract As a fundamental study to develop a new process for treating iron-lead base alloys, "speiss", with a considerably high content of arsenic or antimony, which are produced in smelting lead ores or secondary materials of lead under a strongly reductive condition, the phase relations and the minor elements distribution of copper, silver, gold and platinum in the Fe-Pb-As and Fe-Pb-Sb systems saturated with carbon were determined at 1473 K by a quenching method. It was found that a miscibility gap composed of an iron-rich alloy phase with a very small content of lead and a lead-rich alloy phase with very few contents of iron and carbon extended over the wide concentration range. Arsenic was mostly distributed in the iron-rich alloy phase, while antimony almost evenly in both phases. For the distribution of precious metals, it was found that silver was mostly enriched in the lead-rich alloy phase, platinum in the iron-rich alloy phase, while gold and copper almost evenly in both phases. Based on the obtained data of the phase separation and using thermodynamic data for the Pb-As and Pb-Sb binary systems, the activity coefficients of arsenic and antimony in the Fe-As and Fe-Sb systems saturated with carbon at 1473 K were derived and expressed by a formula with the interaction parameters.
Keyword phase relations
speiss
distribution ratio
activity coefficient
interaction parameter
iron-rich alloy phase
lead-rich alloy phase
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Chemical Engineering Publications
 
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