Erin Hayes on sat 26 jul 97
Hi everyone!
I wonder if anyone has the chemical formula for "Ultrox" or "Ultrox
500"? If so, could you post it to me? I am putting all our glazes on a
database and this chemical is not listed in the default materials list.
Thanks!!
Erin.
Tony Hansen on sun 27 jul 97
ULTROX - ZIRCONIUM SILICATE GLAZE OPACIFIER
SUPPLIER: M & T CHEMICAL
RAW WEIGHT: 100.00
ANALYSIS & UNITY FORMULA
========================
ZrO2...... 65.00% 0.53
SiO2...... 35.00% 0.58
HAZARDS
-------
Ultrox products are relatively non-hazardous based on plant
operating
experience. Avoid inhalation of dust. May cause eye irritation on
repeated
contact.
DETAIL NOTES
------------
Three types are available: Ultrox, Ultrox 500W, Ultrox 1000W.
Ultrox opacifiers are claimed to assure uniformity of glaze opacity,
texture and color over a wide range of temperatures and
compositions. They
reduce the expansion of glazes and tend to reduce crazing. They
increase
the resistance of glazes to chemical attack and widen the firing
range.
Ultrox melts at 4000F and has a coefficient of thermal expansion of
42 x
10-7, a hardness of 7.5 Moh and index of refraction of 2. It is
composed of
65% ZrO2 and 35% SiO2 in a formula of ZrO2:SiO2.
Ultrox is used for the production of both white and color glazes for
sanitary ware, wall tile, glazed brick, structural tile, stoneware,
dinnerware and special porcelains. It is used in amount of 12-20% of
the
glaze batch.
-Ultrox has an average particle size of 2 microns.
-Ultrox 500W has an average particle size of 1 micron and thus
provides
greater whitening power. It lightens color appreciably and thus
requires
more stain.
-Ultrox 1000W has an average particle size of .5 micron and provides
the
maxium reflectance and opacity.
Ultrox has an extremely high melting point and low uniform thermal
expansion and can thus be slip cast or pressed to produce zirconium
silicate refractories (for use in glass melting furnaces, foundries,
refractory porcelains, washes for refractory slabs, refractory
cements).
Compositions of Ultrox alone can approach the theoretical density of
zircon.
Liquidous temperature: 4000F
Coefficient of thermal expansion: 42 x 10 -7
Hardness: 7.5 Moh's scale
Index of refraction: 2
--
T o n y H a n s e n, I M C thansen@digitalfire.com
=========================================================
INSIGHT5/Magic of Fire II demos at http://digitalfire.com
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