The tortoise shell mesh in the inner wall of a cement vertical mill classifier is a metal structure used to enhance the adhesion of wear-resistant materials. Its function is to prevent the lining material from falling off and extend the equipment's service life. The following is a detailed description of the tortoise shell mesh:
1. Material and Structure
Material: Made of special metal materials resistant to high temperatures and corrosion, commonly featuring a hexagonal three-dimensional mesh structure with interconnected holes on all six sides, facilitating bonding with the lining material.
Shape: Can be bent into the required curvature to adapt to the complex shapes of flat or cylindrical equipment inner walls.
2. Main Functions
Anchoring Reinforcement: After being welded to the inner wall, it forms an integrated structure with wear-resistant castables (such as ceramic coatings), enhancing the mechanical anchoring force of the lining and preventing detachment due to material erosion or vibration.
Wear Protection: Combined with refractory aggregates, it significantly improves the wear resistance of the equipment's inner wall, making it suitable for areas subject to high-concentration dust-laden gases or material erosion (such as classifier outlets and duct elbows).
High-Temperature and Corrosion Resistance: The material itself possesses high-temperature resistance and anti-corrosion properties, making it suitable for high-temperature and acidic/alkaline environments in cement production.
4. Advantages and Features
High Strength: Compressive strength can reach over 130 MPa, effectively resisting material impact.
Vibration Resistance and Toughness: The mesh structure design reduces crack formation and improves vibration resistance.
Environmental Friendliness: The material composition is free of heavy metal pollution, making it green and eco-friendly.
Convenient Construction: Can be applied on-site without disassembling the equipment, suitable for maintenance in both new and old production lines.
5. Application Scenarios
Cement Industry: Easily worn parts such as vertical mill classifier shells, outlet ducts, cyclone barrels, and discharge hoppers.
Other Industries: Wear and corrosion protection for equipment in thermal power, steel, and chemical industries, such as pulverized coal pipelines and dust collector shells.