Tom at Hutchtel.net on fri 11 nov 05
Tom Buck,
Hi, Good to hear from you now and then. Gives me faith. We still use the
Moonlight recipe you worked out for us with great success.
Subject: Re: zirconium opacifiers
> Steve S:
> The zirconium opacifiers, ZrO2 (oxide) and ZrSiO4
> (silicate/zircon) do NOT melt in any alumino-silicate mix we use in our
> glazes. these two have melting points above 2700 degrees Celsius 4860
> degrees Fahrenheit. and do not dissolve in the Liquidus; they remain in
> suspension.
Why does the flux (feldspar usually) not have any effect on bringing the
zirconium into the melt? Or does the flux only work on the combination of
Alumina and Silica (and whatever's lower in temp)?
Tom Wirt
Hutchinson, MN
twirt@hutchtel.net
www.claycoyote.com
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