Can the dynamic powder selection machine in cement plants be lined with alumina ceramic sheets and what are the advantag

The dynamic powder selector in cement plants is a core equipment in cement production, mainly used to grade cement raw materials or clinker according to particle size (separating fine powder from coarse powder). Its internal components (such as rotors, guide vanes, shells, etc.) are subject to long-term erosion and wear by high-speed dust airflow.
Aluminum oxide ceramic lining plates are commonly used for the protection of guide cones/shells (dust erosion area) and air inlets (high concentration particle impact area)
Advantages of lining alumina ceramic sheets
Ultra wear-resistant: The Mohs hardness of wear-resistant alumina ceramic reaches 9 levels (second only to diamond), and its wear resistance is more than 10 times that of high chromium steel. It can resist long-term erosion from cement particles (hardness 6-7 levels).
Extend equipment lifespan: Traditional metal components need to be replaced in 3-6 months, while ceramic lining plates can be used for 3-5 years, significantly reducing downtime and maintenance frequency.
Reduce maintenance costs: Ceramic tiles are fixed with high-strength adhesive or bolts, and can be replaced separately after local wear without the need to disassemble the powder selection machine as a whole.
Improving operational efficiency: The ceramic surface is smooth, reducing material accumulation and wind resistance, which helps maintain powder selection accuracy and airflow stability.

Corrosion resistance: Ceramics have strong chemical inertness and can withstand alkaline dust and high temperatures (≤ 800 ℃) in cement production, avoiding metal corrosion and material adhesion.

Practical application cases
The rotor blades of a dynamic powder selector on a 5000t/d cement production line were originally made of high chromium alloy, which needed to be welded every 4 months. After switching to alumina ceramic lining plates, the wear decreased by 90%. The ceramic plates were only replaced once every 2 years, saving over 500000 yuan in maintenance costs annually.

Selection suggestions
Wear-prone areas: Use 10-20mm thick ceramic tiles, double fixed with bolts and adhesive
Complex surface: using irregular ceramic lining plates (such as curved or trapezoidal) for bonding
Operating condition: Select alumina ceramics with a purity of 92/95% or higher

Alumina ceramic lining is an ideal choice for upgrading the wear resistance of dynamic powder selection machines, especially suitable for cement production lines with high dust concentration and strong erosion.