Ultrox
Zirconium Silicate Glaze Opacifier
| MLPT - Melting Point (MP) |
2200C |
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 maximum 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.
Coefficient of thermal expansion: 42 x 10 -7
Hardness: 7.5 Moh's scale
Index of refraction: 2
Ultrox products are relatively non-hazardous based on plant operating experience. Avoid inhalation of dust. May cause eye irritation on repeated contact.
Out Bound Links
- (URLs)
MSDS
http://www.atofinachemicals.com/plants/canada/pdf/... - (Materials - Parent)
Zircon - ZrO2.SiO2
Zirconium Silicate
- (Typecodes)
1: OPA - Opacifier
- (MDT - Member)
North America
The decision about what materials to include in th... - (MDT - Member)
Australia
We are working on this database and would apprecia... - (MDT - Member)
New Zealand
We are working on this database and would apprecia...
In Bound Links
- (Materials - Related)
Zircopax - Zirconium Silicate
- (Materials - Alternative)
Opax - Zirconium Oxide, Zirconia
XML for Import into INSIGHT
<?xml version="1.0" encoding="UTF-8"?>
<material name="Ultrox" descrip="Zirconium Silicate Glaze Opacifier" searchkey="" loi="0.00" casnumber="366497-20-3">
<oxides>
<oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="35.000" tolerance=""/>
<oxide symbol="ZrO2" name="Zirconium Dioxide" status="U" percent="65.000" tolerance=""/>
</oxides>
</material> | 
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