The heart of the cement plant — where raw meal is preheated, calcined, and sintered at up to 1,450°C to form cement clinker. Complete equipment for efficient clinker calcination, cooling, drying, and emissions control.
Overview
Clinker production is the thermal core of the cement manufacturing process, where the homogenized raw meal undergoes a series of physical and chemical transformations at temperatures reaching 1,450°C. The raw meal is first preheated in the cyclone preheater, then partially calcined in the precalciner, and finally sintered in the rotary kiln to form cement clinker nodules. The hot clinker is then rapidly cooled in the grate cooler to preserve its reactive mineral phases before being conveyed to the grinding stage.
LIMING Machinery provides the complete equipment portfolio for clinker production: rotary kilns and shaft kilns for the sintering reaction, cyclone preheaters and precalciners for efficient heat exchange and fuel savings, grate coolers for rapid clinker quenching and heat recovery, cement dryers for moisture removal, and a full range of dust collection systems — including pulse-jet bag filters, electrostatic precipitators, and cyclone dust collectors — to ensure environmental compliance. Our kiln systems support capacities from 180 to 10,000 t/d with heat consumption as low as 3,000 kJ/kg of clinker.
Equipment Types
Max Clinker Capacity
Sintering Temperature
Heat Recovery Rate
Equipment Range
Explore our complete range of kilns, preheaters, coolers, dryers, and dust collection systems. Each piece of equipment is engineered for high thermal efficiency, low emissions, and reliable continuous operation in the extreme conditions of cement clinker production.
The core thermal reactor where raw meal is sintered at 1,450°C to form clinker. Rotating cylindrical furnace with refractory lining, supporting rollers, and drive system. Available in dry and wet process configurations.
Vertical shaft kiln for small to medium cement plants. Compact design with lower capital investment. Mechanized or natural ventilation for clinker burning in vertical counter-current flow.
Multi-stage suspension preheater that heats raw meal using kiln exhaust gases. Recovers waste heat, reduces kiln length, and lowers fuel consumption by 30–40% compared to long kilns.
Between the preheater and kiln, the precalciner decomposes up to 90% of limestone before entering the kiln. Dramatically increases kiln throughput and reduces thermal load on the kiln refractory.
Rotary dryer for reducing moisture content in raw materials, coal, slag, and other cement ingredients. Counter-current hot air flow ensures efficient drying before grinding or processing.
Rapidly quenches hot clinker from 1,400°C to below 100°C using forced air. Recovers heat as secondary air for the kiln, improving fuel efficiency and preserving clinker mineral quality through fast cooling.
High-efficiency baghouse dust collector with pulse-jet cleaning. Captures particulate emissions from kiln, mill, and cooler exhaust streams. Filter bags available in Nomex, PPS, P84, and fiberglass for various temperatures.
High-voltage electrostatic dust collector for large-volume kiln exhaust gas. Charged particles collect on plates under electric field. Handles high-temperature gas up to 400°C with low pressure drop.
Centrifugal dust collector for pre-cleaning of large-particle dust. Uses swirling airflow to separate particles by centrifugal force. Often used as a primary stage before bag filters or ESPs.