New version of this page available at digitalfire.com: Click here to go now
Ultrox
Zirconium Silicate Glaze Opacifier
Chemistry
Chemistry available on new site, see link above
Links to Other Materials
Miscellaneous
- Family: Opacifier
- Region: North America
- Mined At: Unspecified
- Raw Mineral: No
- Generic: No
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 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.
Liquidous temperature: 4000F
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.
URLs
Suppliers
- Grupo Industrial Trebol S.A. de C.V.
Authors
- Tony Hansen (Owner)
XML
Available on new site, see link above
Much more information with complete interlinking to many related Copyright 2003 http://digitalfire.com, All Rights Reserved Please support http://ceramicmaterials.info to improve this library |  |
INSIGHT is ceramic chemistry |