100MPa Cold Crushing Strength High Density Zircon Brick for Glass Furnace Front Wall and Superstructure

Brief introduction of Zirconia bricks

Zirconia bricks are made of partially stabilized zirconium dioxide and zirconium corundum clinker as raw materials, which are mixed, shaped, dried, and fired at high temperature in a shuttle kiln.

Advantages and characteristics of Zirconia brick

Technical requirements for Zirconia bricks for glass melting furnaces

Zirconia brick is one of the commonly used refractory bricks for glass kiln masonry, and its main raw material is zircon (7rO2.SiO2). Zircon is a tetragonal mineral with a hardness of 7.8.

With a melting point of 2550°C, the chemical properties of zircon are quite stable and are not affected by the erosion of molten glass and slag.

Application of Zirconia bricks

Zirconia bricks are mainly used in large slag slag of glass melting furnaces, fire holes, detection holes, parapets, arches, and sealing layers at the bottom of the melting part.

Zirconia bricks have good corrosion resistance to alkali-free glass liquid, and can be used as refractory materials in contact with alkali-free glass liquid at lower temperature. Aggregate Zirconia bricks with better thermal shock resistance can be used for superstructures with little temperature change.

Specification of Zirconia brick

The properties of dense Zirconia bricks for glass kiln:

1. High refractoriness and high softening temperature.

2. Strong resistance to slag erosion and strong acid resistance.

3. High compressive strength.

4. Good thermal shock resistance.

As a common brick for glass melting furnace, Zirconia brick can be used in many parts of glass furnace. The following is the application of Zirconia brick in various parts of glass melting furnace.
1. Zirconia brick for glass furnace Front wall
The front wall of the glass melting furnace is close to the batch material area. Due to the large temperature fluctuations in this area and the large amount of dust in the raw materials, the conditions are relatively harsh. Material dust erosion ability. Therefore, the hanging wall and the wing wall of the feeding port can be designed to use re-sintered fused Zirconia bricks.

2. Zirconia brick for glass furnace Neck
The neck is generally designed with a water bag and agitator. During equipment maintenance, there will be a large temperature difference in the space of the neck. It is a better design choice to use sintered Zirconia bricks in this place.

3. Zirconia brick for glass furnace Port and upper wall of regenerator
Because Zirconia bricks, especially Zirconia bricks made of fused zollite, also have good resistance to the erosion of batch materials and alkali vapor, re-sintered fused Zirconia bricks can be used in port. At least it can be used in the last few pairs of port to improve the operating environment of the small furnace and reduce the cost of this part. Similarly, re-sintered fused Zirconia bricks can also be used in the upper wall of the regenerator. Compared with alkaline bricks, Zirconia bricks have lower thermal conductivity and expansion coefficient, which can reduce the expansion and deformation tendency of the kiln body and reduce the The cost of heat dissipation and heat preservation of the kiln body.

4. Zirconia brick for glass furnace used for Coal-fired glass melting furnace port ascending channel and tongue
As we all know, the service life bottleneck of the gas kiln lies in the small furnace. In the traditional design, silica bricks are used to equip the fused zirconia corundum brick tongue. Since the temperature here is lower than 1450℃, the use of silica bricks in this part is not the best choice. , this part is severely eroded, and the good anti-corrosion performance of Zirconia bricks can prolong the service life of this part. In addition, fused zirconia corundum bricks are used for the tongue wall. Due to their poor thermal shock stability, re-sintered fused Zirconia bricks may be a better choice.

5. Zirconia brick for glass furnace for Checker bricks for gas regenerator
The grid body of the gas regenerator currently designed is made of clay bricks, and the general service life is 3 years, which cannot meet the needs of the increasingly long kiln age. Replacing the grid bricks is not only labor-intensive, but also causes damage to other parts of the furnace. Using a certain amount of sintered Zirconia bricks on the top of the gas grid can increase the service life of the kiln.

6. Zirconia brick for glass furnace for Operating hole
Zirconia bricks have good thermal stability and high temperature strength, and can be used in various operating holes of the furnace, such as observation holes, spray gun holes, air supply holes and other parts.

 Packing of Zirconia brick

 Shipping of Zirconia brick

1.Our packaging is as per customer’s request
2.Normal goods delivered by sea transport
3.Sample shipping by express
4.We will shipping and delivery goods timely, quanlity and quantity guaranteed, and also in accordance with the contract and customer's requirment completely.

Contact us:

Josie Xiao
Mobile Phone:+8618037198058
WeChat / Whatsapp / Skype: +8618037198058
E-mail: sales03(at)firebricks-supplies.com