Fused Cast AZS block is also called electro Zircon corundum block, which is abbreviated as AZS because it contains Al2O3-ZrO2-SiO2. Alumina-zirconia-silica (AZS) fused-cast refractories began to increase in popularity in glass furnace applications for the glass contact and. fused Cast AZS refractories are the most widely used materials both in glass contact and superstructure of glass melting products are made of.

Author: Samurr Torisar
Country: Poland
Language: English (Spanish)
Genre: Music
Published (Last): 5 July 2012
Pages: 328
PDF File Size: 9.55 Mb
ePub File Size: 6.94 Mb
ISBN: 926-5-81325-789-2
Downloads: 64109
Price: Free* [*Free Regsitration Required]
Uploader: Kalmaran

The method of claim 21 wherein the first set of components comprises alumina particles with an zzs particle size greater than 1 mm. Refractoriness under Load T0. The alumina may be reactive or calcined. Therefore, the invention is not limited to the specific details, representative embodiments, and illustrated examples in this description.

AZS Bricks

The pencil prepared from the formula of Example 1 lost only an average of Results 1 – 1 of 1. Dense microstructure of Fused Cast AZS 33 bricks to glass corrosion resistant performance is good, not easy az produce slag and other defects in glass kiln. In one embodiment, the refractory composition does not include an effective amount of any other type of binder, such as a hydraulic cement binder.

Glass melting furnaces are refractory lined vessels shaped as containers for melting and holding glass. Dal Maschio et al. The zirconia may be provided by zircon flour or a zirconia bearing material. The present invention will now be further described.

Standard Search Advanced Azw. The alumina particles preferably have an average particle size greater than 1 mm.

Please provide a name for this query: The foregoing and other features and advantages of the present invention will become apparent from the following detailed description of the presently preferred embodiments, when read in conjunction with the accompanying examples. Molten glass is highly corrosive. In another aspect, a method of preparing a refractory includes providing a first set of components and a colloidal silica binder.


Tell us your needs as specific as possible. refractoru

The colloidal refraactory binder holds or binds the first set of components together in a monolithic form. The pencils were dipped into sodium hexametaphosphate at a high temperature.

USA1 – AZS refractory composition – Google Patents

The refractory comprises a mixture of a colloidal silica binder with a redractory set of components. The refractory composition is formed on the surface of a furnace. A composition prepared according to Example 1 was applied in a brass furnace. Javascript must be enabled for narrowing. Development of AZS refractories for the glass industry. In contrast, the present composition preferably does not include fused AZS particles. Further, some cement refractories can generate low melting phases at the high temperatures typical of glass erfractory furnaces, thus leading to higher corrosion rates.

After the test, the samples were analyzed to determine the resistance of the refractory composition to the harsh conditions. The refractory composition disclosed herein may also be used in other types of furnaces, such as brass furnaces.

Commercial AZS alumina-zirconia-silica refractories are a good alternative in refractory materials for the glass industry’ because they can support the aggressive conditions during liquid processing of glass.

Fused AZS particles consist of particles each comprising alumina, zirconia, and silica.

Fused Cast AZS Refractories

Zircon Mullite Brick MZ The refractory blocks can become deeply scored and may develop wear spots or portions where the molten glass has eroded or dissolved the refractory.

This research was conducted to develop new formulations of AZS refractories with different amounts of ZrO 2 with the purpose of improving the characteristics, properties and the work conditions in the glass melting furnaces and, at the same time, lower the costs this type of refractories.


For Comparative Example B, the alumino-silicate product worked well above the bath line and the alumina-silicon carbide product worked well below the bath line, but neither material held up at the interface. Cullet is crushed glass from the manufacturing process. The glass-making materials usually include a mixture of cullet and batch materials.

A method of preparing a refractory, comprising: Close Go to Workspace. The method of claim 21 wherein the refractory composition does not include an effective amount of a hydraulic cement.

The refractory composition of claim 1 wherein the refractory composition is formed on at least one wear portion of a glass melting furnace. Accordingly, the invention is not to be restricted except in light as necessitated by the accompanying claims and their equivalents. The refractory composition of claim 17 wherein the refractory composition does not include an effective amount of a aza cement.

Each aspect so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary.

Reading, OhioAlcan, Refraactory. Year of fee payment: As method of claim 21 wherein the refractory composition is formed by a method selected from casting, pumping, and shotcreting. Process for making a high temperature-resistant ceramic material with an adjustable thermal expansion coefficient and method of use of same.