Solid-Solid Reactions in the Ca^sub 3^(AsO^sub 4^)^sub 2^-Ca^sub 2^SiO^sub 4^-CaSO^sub 4^ Ternary System at Elevated Temperatures

Exploratory laboratory-scale tests were performed in order to identify the solid phases present in the Ca^sub 2^SiO^sub 4^-Ca^sub 3^(AsO^sub 4^)^sub 2^ binary system and in the Ca^sub 2^SiO^sub 4^-Ca^sub 3^(AsO^sub 4^)2-CaSO^sub 4^-CaO system. A microanalysis study from slow-cooled samples suggests...

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Bibliographic Details
Published inMetallurgical and materials transactions. B, Process metallurgy and materials processing science Vol. 37; no. 1; p. 141
Main Authors Coursol, P, Stubina, N M
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.02.2006
Subjects
Calcium
Chemical reactions
Copper
Materials science
Temperature
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Summary:Exploratory laboratory-scale tests were performed in order to identify the solid phases present in the Ca^sub 2^SiO^sub 4^-Ca^sub 3^(AsO^sub 4^)^sub 2^ binary system and in the Ca^sub 2^SiO^sub 4^-Ca^sub 3^(AsO^sub 4^)2-CaSO^sub 4^-CaO system. A microanalysis study from slow-cooled samples suggests the presence of at least two intermediate phases. These compositions correspond to Ca^sub 5^(AsO^sub 4^)^sub 2^(SiO^sub 4^) (1:1) and Ca^sub 8^(AsO^sub 4^)^sub 4^(SiO^sub 4^) (1:2). The formation of stable intermediate salts with high melting points is of significant industrial interest in copper converting operations. If excessive amounts of solids form, skimming problems or poor slag-metal separation may become problematic. [PUBLICATION ABSTRACT]
ISSN:1073-5615
1543-1916