The vertical preheater serves as the primary host equipment in active lime production lines, designed to transfer limestone from the upper hopper into the preheater body. Utilizing high-temperature exhaust gas (950°C–1100°C) discharged from the calcination kiln, it facilitates efficient heat exchange, uniformly preheating materials to temperatures exceeding 900°C. This process results in approximately 30% of CaCO₃ decomposition before materials are pushed into the rotary kiln for final calcination via hydraulic push rods.

• Available in two basic shapes with multiple module geometries and size options
• Efficient counter-flow heat transfer system
• Industry-leading hydraulic discharge plungers
• Integrated standby hydraulic system pump
• Compartmentalized design with stone feed pin gate and exhaust gas isolation damper per module
• Robust construction with full refractory lining for decades of service life

• Superior heat recovery efficiency
• Modular design enables online maintenance without production interruption
• Large plunger workface reduces moving parts while increasing work capacity
• Redundant hydraulic pump ensures exceptional system reliability and availability