Requirements for fused bricks during the use of glass kilns

If a glass kiln wants to reach the designed service life or not be polluted by the glass solution, it is necessary to have a comprehensive understanding of the appearance quality and internal quality of fused bricks, understand the performance of fused bricks, and the weak points of fused bricks: which parts can have defects and which parts must be perfect. The following is a brief introduction to the special parts of the pool wall.

1. Appearance quality. 

The corner bricks, kiln-cut bricks, bubbling bricks, and flow hole bricks of the pool wall are generally azs 41#. The assembly gap with the adjacent bricks must be strictly required. 

The gap will accelerate the erosion of the glass solution to the brick material. The assembly gap requirement is not greater than 0.5mm. Shrinkage holes are not allowed at the bottom of the brick material. 

The surface pores are greater than 2mm, and no more than twelve are allowed per cubic meter. The brick body color is white with yellow, and cracks are not allowed in bubbling and flow hole bricks. 

There are no defects within 300mm of the top of the pool wall. These requirements are very critical. Failure to meet them will affect the service life of the brick material.

2. Internal quality, 

A. Judging the impurities in the fused cast AZS brick from the color of the brick, or judging whether the carbon content is high. The brick with high carbon content is blue in color. Such bricks are strictly prohibited from use, which will double the service life of the kiln. 

B. If there is a blocky blue phenomenon on the surface of the brick, there is a high possibility that there are iron blocks inside. The iron blocks come from the iron bar part falling off during the flat material or exhaust during the production process, as well as other factors. Such imaginary bricks should also be prohibited from use. 

C. The glass phase ratio must be strictly controlled. If the glass phase exceeds the standard, the amount of glass phase precipitation at high temperature will reduce the service life of the kiln and pollute the glass melt.

The above briefly explains a few key points. There are still many factors that need to be paid attention to. In fact, in the use of glass kilns, some problems will be encountered. These problems will have a large component of brick quality. Therefore, when purchasing fused bricks, you must have some knowledge of fused bricks to avoid the final passive situation.