- Time:Sep 25, 2023
refractory bricks can be laid with or without mortar, depending on the specific application and requirements. The choice between using mortar or not depends on factors such as the type of refractory brick, the temperature conditions, the presence of chemical environments, and the desired level of thermal insulation.
Here are the two common methods:
1. With mortar: Using mortar involves applying a refractory mortar between the bricks during the installation process. The mortar acts as a bonding agent, providing structural integrity and stability to the brickwork. It helps fill gaps between the bricks, enhances the overall strength of the lining, and improves resistance to thermal cycling and mechanical stresses. Mortar can also help seal joints and reduce gas leakage in certain applications. Different types of refractory mortars are available, such as air-setting, heat-setting, or chemically-bonded varieties, which are selected based on the specific requirements.
2. Without mortar (dry-stacked): Dry-stacked installation refers to laying refractory bricks without using mortar for bonding. In this method, the bricks are stacked tightly together, relying on their shape and dimensional accuracy to create an interlocking structure. Dry-stacked brickwork is typically used in applications where there is no risk of significant movement or vibration that could cause brick displacement. This method offers simplicity and ease of installation. However, it may have limitations in terms of overall strength, resistance to thermal expansion/contraction, and gas-tightness compared to mortar-bonded brickwork.
The choice between using mortar or dry-stacking depends on factors such as the operating conditions, required structural integrity, thermal conductivity, gas tightness, and the type of refractory being used. It is essential to consider these factors and consult the specific guidelines provided by refractory manufacturers or experts to determine the most suitable method for a given application.
