Which refractory brick is good for glass furnace, and how often should it be replaced?

Which refractory brick is good for glass kiln depends on the specific structure of the kiln, working conditions and required refractory performance. 

The following are some common types of refractory bricks, which are widely used in glass kilns:

Silica bricks: mainly used for the melting part and the working part of the kiln top crown, breast wall and front and rear end walls, the top crown of the regenerator and the upper partition wall of the regenerator.

Clay bricks: mainly used for kiln parts with working temperature of 1300℃, such as checker bricks and wall bricks at the bottom of the regenerator, flue bricks and clay bricks at the bottom of the pool.

Electric fused zirconium corundum bricks: This brick has good corrosion resistance and thermal shock resistance, and is particularly suitable for parts of glass kilns that directly contact molten glass such as pool walls and runners.

Electric fused corundum bricks: Electric fused-βAI203 bricks are bricks used in the working part or the wall of the horizontal passage of float glass melting furnaces. For large melting furnaces, it is mainly used in the working part, horizontal passage and branch passage, etc.

Zircon bricks: Mainly used for the melting part of the crown or the partition bricks between the breast wall and the crown, fire-watching holes, detection holes, etc., with good use effect.

High-purity magnesia bricks: Mainly used for the upper checker brick part of the regenerator, and now also used for the upper wall brickwork of the regenerator and further develop its use range in the regenerator, etc.

Directly bonded magnesia bricks: Mainly used for the middle and lower checker brick part of the regenerator (mainly used in the 800~1000℃ area).

Lightweight refractory materials: It can reduce the heat dissipation of the kiln body, save energy, and reduce the weight of the kiln body and reduce the cost of the kiln. Lightweight refractory materials include lightweight insulating refractory bricks and aluminum silicate fibers.

When selecting refractory bricks, it is necessary to consider the specific structure, working conditions, erosion and cost of the glass kiln. In addition, the quality and performance of refractory bricks have an important impact on the operation of the glass kiln and the product quality. Therefore, a reputable supplier should be selected to ensure the quality and supply stability of refractory bricks.

As for the replacement cycle of refractory bricks, this mainly depends on the use of bricks, the operating conditions of the kiln and the maintenance. Generally speaking, if the refractory bricks are not seriously eroded or damaged, they can continue to be used. However, in order to ensure the safe and stable operation of the glass kiln, it is recommended to inspect and evaluate the refractory bricks regularly. If the bricks are found to be obviously eroded, cracked or falling off, they should be replaced in time.

The specific selection and use recommendations should be determined according to the actual situation of the glass kiln. It is recommended to consult Rongsheng Refractory Materials or kiln design units for more accurate advice and guidance. Electric fused corundum bricks: Electric fused-βAI203 bricks are bricks used in the working part or the wall of the horizontal passage of float glass melting furnaces. For large melting furnaces, it is mainly used in the working part, horizontal passage and branch passage, etc.

Zircon bricks: Mainly used for the separation bricks, fire holes, detection holes, etc. of the large crown of the melting part or the breast wall and the large crown, and the use effect is better.