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Solid-solid reactions in the Ca3(AsO4)2-Ca2SiO4-CaSO4 ternary system at elevated temperatures

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Abstract

Exploratory laboratory-scale tests were performed in order to identify the solid phases present in the Ca2SiO4-Ca3(AsO4)2 binary system and in the Ca2SiO4-Ca3(AsO4)2-CaSO4-CaO system. A microanalysis study from slow-cooled samples suggests the presence of at least two intermediate phases. These compositions correspond to Ca5(AsO4)2(SiO4) (1:1) and Ca8(AsO4)4(SiO4) (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.

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Authors and Affiliations

  1. the Falconbridge Technology Centre, P0M 1S0, Falconbridge, ON, Canada

    P. Coursol (Research Scientist)

  2. Falconbridge Limited’s Horne Smelter, J9X-1P5, Rouyn-Noranda, PQ, Canada

    N. M. Stubina (Six Sigma Master Black Belt)

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  1. P. Coursol
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  2. N. M. Stubina
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Coursol, P., Stubina, N.M. Solid-solid reactions in the Ca3(AsO4)2-Ca2SiO4-CaSO4 ternary system at elevated temperatures. Metall Mater Trans B 37, 141–143 (2006). https://doi.org/10.1007/s11663-006-0093-9

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  • DOI: https://doi.org/10.1007/s11663-006-0093-9

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