During the construction of refractory mud, attention should be paid to the following matters to ensure the construction quality and the performance of refractory mud:

I. Surface preparation

Cleaning surface: Before construction, the surface to be repaired or connected must be clean, dry, free of impurities, dust, grease or old mud. Tools such as brushes or air guns can be used for cleaning.

Leveling treatment: the base course should be smooth without obvious concave and convex or cracks, so as to improve the bonding force between the refractory mud and the base course.

II. Moisture regulation

Appropriate amount of water: according to the instructions of the refractory mud, appropriate amount of water is added to the refractory mud and stirred evenly until a uniform slurry is formed. Avoid adding too much water, so as to avoid excessive dilution and affect the bonding performance of refractory mud.

Water quality requirements: clean water should be used when preparing refractory mud, and the water quality should meet the water standard of urban residents. For mud with additives, the chloride ion content in water should be less than 300ppm.

III. Construction method

Evenly daub: use tools such as scraper, spatula or gloves to evenly daub the adjusted refractory mud on the surface to be repaired or connected, so as to ensure that the refractory mud fully contacts the surface without leaving gaps or gaps.

Compaction treatment: In the process of daubing refractory mud, it is necessary to continuously compact and smooth it to ensure that the refractory mud is evenly filled without air holes.

Construction tools: Use appropriate construction tools, such as scrapers and mixers, to ensure standardized operation and improve construction efficiency and quality.

IV. Curing and drying

Curing time: according to the type and thickness of refractory mud, follow the specified curing time. During the curing period, any pressure or external force should be avoided.

Baking and drying: After the construction is completed, baking and drying should be carried out at a proper temperature to improve the temperature resistance and stability of refractory mud. Baking should be carried out in strict accordance with the heating curve to avoid peeling or cracking caused by rapid heating.

V. Construction environment

Temperature control: the temperature of the construction environment should be suitable to avoid the influence of too high or too low temperature on the refractory mud. When the temperature is too low, the mixing water can be heated to ensure the proper temperature of the mud.

Humidity control: attention should be paid to the environmental humidity during construction to avoid the influence of excessive humidity on the hardening and fire resistance of refractory mud.

VI. Safety and maintenance

Safe operation: Construction personnel should wear personal protective equipment, such as fire gloves, goggles, fire breathing apparatus and protective clothing, to protect construction personnel from potential hazards.

Regular inspection: after the refractory mud is solidified and dried, its state should be inspected regularly, and if it is found to be damaged, detached or cracked, it should be repaired in time.

Material storage: Refractory mud should be stored in a dry and well-ventilated place, avoiding moisture or heat, and away from fire sources and high-temperature equipment.

VII. Other considerations

Material selection: Choose suitable refractory mud types according to the temperature requirements of the specific use environment, such as high-alumina refractory mud and clay refractory mud.

Mixing is prohibited: different types of refractory mud shall not be mixed, and the refractory mud that is not used up that day should not be kept for use the next day, and the refractory mud that has been initially set must be discarded.

Proper gap: Leave a proper gap at the smoke outlet and furnace foot to avoid cracking or deformation of refractory mud when it expands when heated and contracts when cooled.

Through the above precautions, the construction quality and performance of refractory mud can be ensured, its service life can be prolonged, and the stable operation of high-temperature equipment can be guaranteed.