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There are many types of refractory bricks. Faced with the distinction between these models, the industry can see through at a glance, and the model size is clear at a glance. But laymen, especially those who purchase refractory bricks, are confused when they see so many models. Buying suitable refractory bricks is a headache for many manufacturers. Of course, many large enterprises choose according to the design institute's plan, and it is not easy to buy some special furnace types and different furnace temperatures.

The selection of suitable refractories should first consider the size, temperature and aggressive type of the furnace. Understand where the refractory is used, and the gas field of the furnace. Because the temperature is high and the size of the furnace type determines the grade of refractory bricks, the aggressive type determines the composite properties of refractory bricks. Knowing the gas field of the furnace determines whether to use neutral refractory bricks or acid refractory bricks or alkaline refractory bricks. After knowing where to use the refractory bricks, decide whether to choose a working layer, permanent layer or insulation layer.

According to the structure of the kiln, operating conditions, the cause of material damage. Accurately understand and grasp the temperature changes of various parts of the material. Understand the erosive nature of the materials burned in the furnace, the temperature of different parts, the mechanical stress, and the operation rate of the furnace. In the refractory brick number, T represents the first capital letter of the Chinese pinyin of the "tong" character of the universal brick. The z, c, s, k, and j after the T character represent the "straight", "side", "vertical", and "wide" of straight bricks, side wedge bricks, vertical wedge bricks, wide wedge bricks, and arch bricks, respectively. And the first lowercase letter of the Chinese pinyin of the word "feet".

The sequence number follows the dash. Z, C, S, K and J in the codenames represent the "straight", "side", "vertical", "wide" and "straight", "side", "vertical", "width" of straight brick, side wedge brick, vertical wedge brick, wide wedge brick and arch foot brick, respectively. The first capital letter of the Chinese pinyin of the word "foot". Straight brick letters are followed by hundred and ten digits of brick length a, followed by ten digits of brick thickness c. The wedge-shaped brick letters are followed by the hundred and ten digits of the distance between the head and the head, followed by the ten or more digits of the large head size a and the small head size a1. The k at the end of the number indicates the Chinese pinyin of the wide brick "ku" The first lowercase letter. The letter of the arch foot brick is followed by the hundred and ten digits of the slope length L, followed by the ten digits of the inclination angle α.

After choosing the material of refractory bricks, we must consider the choice of shape and weight of refractory bricks of different materials. The choice of the shape of the refractory brick and the design of its size are mainly determined by the design of the lining of the thermal equipment such as the kiln and the brick. The shape and size of the refractory bricks must serve the needs of refractory bricks in the furnace as much as possible.

Regardless of the design unit or maintenance unit, when designing and selecting the lining refractory bricks, focus on the size of the refractory bricks, which can not only ensure the convenience of masonry operation, but also ensure that the refractory bricks are most suitable for forming and sintering in the production process. Size and weight. In summary, the above refractory brick purchase methods are summarized by professional manufacturers based on years of experience. As long as you choose according to the above principles, you can choose the appropriate brick type and high-quality materials, and you can save a lot of costs.