1. Procedure
Mix masonry slurry → process inspection → sawing and processing mullite insulation bricks → masonry.
2. Mix masonry mud
(1) When the masonry mud is made of finished refractory mud or combined clay mud, mechanical stirring should be used as much as possible, and the stirring time should not be less than 5 minutes. The mud consistency is controlled by the amount of water added.
(2) In the absence of mechanical stirring, the soaking method should be adopted, that is, the raw materials used for mixing the masonry mud are flooded with water, and the soaking time shall not be less than 24h. After soaking, the excess water is decanted and the mud is mixed.
3. Process inspection
(1) Before laying thermal insulation bricks, check whether the contact surface between the thermal insulation bricks and the kiln shell meets the requirements.
(2) When building heavy furnace walls, check whether the quality of the previous refractory masonry meets the requirements and whether the accessories are installed correctly.
4. Sawing processing
(1) The bricks used for the staggered joints of the thermal insulation masonry or other bricks need processing should be sawed with a hand saw or a hacksaw, and can not be cut with a brick knife.
(2) When mullite heat-insulating bricks are processed in batches, it is advisable to use template control, and use saw blades or steel needles to draw lines directly.
(3) In order to improve the processing accuracy, the contact point between the mullite insulation brick and the special-shaped steel component should be determined by the embossing method.
Next issue we will continue to introduce wet masonry process of mullite insulation brick. Please stay tuned!
