During the maintenance process of CFB boilers, the key points and quality requirements for the maintenance of refractory, wear-resistant and insulating bricks are as follows.
Inspection of refractory, wear-resistant and thermal insulation bricks
Key points of the process: 1. Check whether the refractory, wear-resistant and thermal insulation fire bricks are collapsed, dislocated, worn, etc. 2. Check and record the erosion and wear of refractory, wear-resistant and thermal insulation bricks.
Quality requirements: 1. Those that are collapsed, dislocated, or severely worn should be replaced. 2. The supporting iron parts that are deformed or broken should be replaced.
Removal of fire-resistant, wear-resistant and insulating bricks
Key points of the process: The demolished bricks must be delivered manually and throwing is strictly prohibited.
Quality requirements: Removed bricks must be cleaned in time, and bricks stacked on the scaffolding platform must not be overloaded.
Preparation of fire-resistant, wear-resistant and insulating bricks
Key points of the process: 1. Transport refractory, wear-resistant and thermal insulation bricks to the site according to the required quantity. 2. Before transportation, check whether the fire-resistant, wear-resistant and thermal insulation fie rbricks are defective. During transportation, handle with care to prevent damage to refractory, wear-resistant and thermal insulation fire bricks. 3. After being transported to the construction site, they must be stacked neatly to prevent collapse.
Quality requirements: 1. Before transportation, check the model of fire-resistant, wear-resistant and thermal insulation bricks, and do not use the wrong materials. 2. Fire-resistant, wear-resistant, and insulating bricks must not have defects such as fractures or missing corners, and must not have penetrating cracks.
Mixing of fire-resistant, wear-resistant and thermal insulation mud
Key points of the process: 1. The proportion is correct. 2. Stir evenly.
Quality requirements: 1. Ensure good adhesion; 2. Ensure fire resistance, wear resistance, and clean insulation mud.
Installation of fire-resistant, wear-resistant and insulation bricks
Key points of the process:
1. Check and install hooks and other supporting iron parts; 2. Pay out the wire. 3. Pre-assemble and number the bricks. 4. Processing bricks; 5. Formal masonry.
Quality requirements:
1. The gray seams meet the design requirements. 2. The adjacent bricks should be flat and cannot be staggered. 3. Bricks with missing edges and corners cannot be placed on the fire surface.
