Magnesia-chrome brick is a kind of high performance refractory material, which is widely used in high temperature industry. During use, the following points should be noted to ensure its performance and service life:

I. Surface cleaning

Before installing magnesia-chrome bricks, it is necessary to clean the surface of the equipment to ensure that the surface is clean and free of impurities such as dust and oil stains. In the process of use, dust and impurities will accumulate on the surface of brick, so it is suggested to use brush or high-pressure water gun to clean it regularly, but corrosive chemical cleaners should be avoided.

II. Avoid excessive stress

When installing furnaces or operating equipment, it is necessary to avoid excessive force or vibration on the bricks, so as to avoid cracking or damage of the bricks. The installation shall be carried out according to the requirements of the manufacturer to ensure that the support and fixation of the brick are firm and reliable.

III. Avoid rapid heating and cooling

The operation of rapid heating and rapid cooling should be avoided as far as possible in the use of magnesia-chrome bricks, because the sharp change of temperature is easy to lead to thermal shock cracks of bricks, thus affecting their service life. For example, when stopping cooling, it should be cooled slowly to avoid direct flushing cooling.

IV. Stay dry

Magnesia-chrome brick is easy to absorb moisture at high temperature. Being in a wet state for a long time will increase the thermal expansion coefficient of brick and accelerate slag erosion and corrosion. Therefore, bricks should be kept dry to avoid long-term contact with water or humid environment.

V. Regular inspection and maintenance

Regularly check the fracture, wear and aging of magnesia-chrome bricks, and replace the bricks in time when problems are found to ensure the normal operation and service life of the equipment. You can check the integrity of the brick by tapping, visual inspection and other methods.

VI. Brick joint sealing

The gap between bricks is a vulnerable part. In order to prolong the life of brick, joint filling and sealing methods should be adopted to prevent slag or other corrosive substances from entering the joint of brick.

VII. Reasonable cooling

In the process of use, the cooling mode should be reasonably selected. For example, when stopping the machine, it should be cooled slowly, and the main exhaust fan should be turned on for cooling after 6 hours of flameout. It is forbidden to flush water on the kiln skin for cooling, because water will quickly penetrate into the brick body, which will reduce the strength of the brick.

VIII. Hang up the kiln skin

In the equipment using magnesia-chrome bricks, such as cement rotary kiln, hanging kiln skin is the key to maintain long-term operation. Kiln skin can protect brick from high temperature erosion. If it is found that the kiln skin is dark red, it should be hung up in time.

IX. Baking treatment

After installation, it is necessary to bake the magnesia-chrome brick to form a stable combination with the surface of the equipment and improve the fire resistance.

X. Protection and environmental protection

The production and use of magnesia-chrome bricks will produce dust and waste gas, which may contain toxic substances. Therefore, it is necessary to pay attention to protective measures during use, and at the same time strengthen environmental protection management to reduce environmental pollution.

Through the strict implementation of the above precautions, the service life of magnesia-chrome brick can be effectively extended, its use efficiency and performance can be improved, and the safe operation of equipment can be ensured.