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.

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Typical applications are superstructures, skew blocks, wall bricks and upper-checker in regenerators, paving, sub-paving, and forehearth blocks in float glass furnaces. The refractory composition is formed on the refractoey of a furnace. Fused-cast-alumina-zirconia-silica refractory, methods of making it and glass melting furnace employing it. The refractory blocks can become deeply scored and may develop wear spots or portions where the molten glass has eroded refractiry dissolved the refractory.

The colloidal silica refractory provides surprisingly good resistance to high temperature corrosive environments.

The refractory composition has been found to provide excellent corrosion resistance. Tell us your needs as specific as possible.

Fused Cast AZS Refractories

Therefore, selected key parts of the glass furnace, so that these parts of the life and the other part refractorh the lower scale. Besides glass furnaces, the refractory composition may be used in brass, copper, and bronze furnaces.

In the following passages, different aspects of the invention are defined in more detail. Cullet is crushed glass from the manufacturing process.


The blocks fit together without mortar and typically are arranged in a rectangular shape to hold molten glass. Instead, the first set of components includes particles selected from alumina, zircon, silica, mullite, and the like.

Properties and applications of fused cast AZS – Refractory Materials in Glass Industry

Batch materials include sand silicalime limestone or calcium carbonate reduced to calcium monoxidesoda ash sodium monoxideand sometimes other materials such as feldspar, salt cake, and metal oxides. Silicon carbide crusting resistant pouring material and preparation method thereof. Year of fee payment: Glass melting furnaces include pot furnaces, glass tanks, tank furnaces, and the like. The present invention provides a colloidal silica refractory composition that is especially useful for glass melting furnaces.

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. Each aspect so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. Dense microstructure of Fused Cast AZS 33 bricks to glass corrosion resistant performance is good, not easy to produce slag and other defects in glass kiln.

The pencil prepared from the formula of Comparative Example A lost an average of The pencil prepared from the formula of Example 1 lost only an average of This product is only available for straight brick.


Refractory materials that include cement tend to be difficult to dry when setting, especially at lower temperatures. The cross sectional area of the pencil lost during the test was measured and the results were averaged.

Hollow piece for producing a sintered refractory product exhibiting improved bubbling behaviour.

The AZS refractory blocks are made from molten material cast into molds, which are machined after hardening. Other embodiments and implementations are possible within the scope of this invention and will be apparent to those of ordinary skill in the art.

US20080314085A1 – AZS refractory composition – Google Patents

Refractory compositions containing monoclinic zirconia and articles formed from these compositions exhibiting improved mechanical strength at high temperatures and improved resistance to thermal shocks. Fused AZS particles consist of particles each comprising alumina, zirconia, and silica.

The refractory blocks usually are made of composite clays having alumina, zirconia, and silica AZS. The zirconia may be provided by zircon flour or a zirconia bearing material. The amount of setting agent may be adjusted to increase or decrease the setting time for the colloidal system refractory.

The particle size of the refractory material allows for a multi-functional material which can be easy shotcreted, pumped or cast.