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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
- Article from:
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Metallurgical and Materials Transactions
- Article date:
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February 1, 2006
- Author:
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Copyright informationCopyright Minerals, Metals & Materials Society and ASM International Feb 2006. Provided by ProQuest LLC. (Hide copyright information)
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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 ...
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