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A flux in a ceramic body is a material that

  • A.lowers the temperature at which a melt forms
  • B.raises the temperature at which a melt forms
  • C.prevents any melting from occurring at all
  • D.contributes the working properties a body needs

Answer: A

Producing a liquid at a workable temperature is what allows a body to vitrify without approaching the melting point of its refractory constituents. Without one the firing temperature would be far beyond what industrial kilns can reach economically.

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