Which refractory bricks are good for glass kilns 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:
1. Silica bricks: mainly used for the top crown of the melting and working parts, breast walls and front and rear end walls, the top crown of the heat storage chamber and the upper partition wall of the heat storage chamber.
2. Clay bricks: mainly used for kiln parts with an operating temperature of 1300℃, such as checker bricks and wall bricks at the bottom of the heat storage chamber, flue bricks and clay bricks at the bottom of the pool.
3. Fused zirconium corundum brick: This brick has good corrosion resistance and thermal shock resistance, and is particularly suitable for parts of the glass furnace that directly contact the molten glass, such as the pool wall and runner.
4. Fused corundum brick: Fused-βAI203 brick is a brick material used in the working part or the pool wall of the horizontal passage of the float glass melting furnace. For large melting furnaces, it is mainly used in the working part, horizontal passage and branch passage, etc.
5. Zircon brick: Mainly used for the large crown crown of the melting part or the separation bricks between the breast wall and the large crown, fire-watching holes, detection holes, etc., with good use effect.
6. High-purity magnesium brick: 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.
7. Directly bonded magnesium brick: Mainly used for the middle and lower checker brick part of the regenerator (mainly used in the 800~1000℃ area).
8. Lightweight refractory materials: It can reduce kiln heat dissipation, save energy, reduce kiln weight and reduce kiln cost. Lightweight refractory materials include lightweight insulating refractory bricks and aluminum silicate fibers.
When selecting refractory bricks, factors such as the specific structure, working conditions, erosion and cost of the glass kiln need to be considered. In addition, the quality and performance of refractory bricks have an important impact on the operation of the glass kiln and the product quality, so reputable suppliers 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 severely 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 regularly inspect and evaluate the refractory bricks. If bricks are found to be obviously eroded, cracked or detached, 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 Henan Hongtai Refractory Material Co., Ltd., a professional manufacturer of glass kiln refractory materials, the only one that provides high-quality refractory materials and professional advice;
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