Aksa ProcessPlant Teknik

Aksa Process Plant Teknik

Grinding, Classification, and Plant Improvement Solutions

From a single wear part to a complete micronized grinding plant, our solutions centre on the machines we know best: pendulum roller mills and the dynamic air classifiers that determine their performance.

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Pendulum Roller Mills (Raymond Type)

Air-swept pendulum roller mills grind, transport, classify and — where process conditions allow — dry the product in a single machine. Grinding rollers swing outward against the grinding ring; system air carries the ground material to the integrated dynamic classifier, which returns oversize particles to the grinding zone and passes acceptable fines on to product collection.

We support new mill projects, capacity and fineness studies, and the correction of underperforming installations — including imported mills that never reached their promised performance.

Schematic cross-section of an air-swept pendulum roller mill: feed inlet, pendulum rollers running against the grinding ring, air inlet below, and dynamic classifier with fines outlet at the top

Dynamic Air Classifiers and the Vortex Breaker Wheel

In a mill where grinding and classification share the same air circuit, classifier efficiency largely determines mill efficiency: a sharper cut lowers circulating load and wasted regrinding. Our classifier work centres on the vortex breaker wheel concept, developed to reduce coarse–fine remixing at the classifier wheel and improve fine-product recovery.

Separation in an air classifier depends on particle size, density and shape, airflow, classifier geometry, rotor speed, and feed conditions. We therefore treat every cut-point and capacity target as an application-specific engineering question — answered against the actual material and operating conditions, not a brochure value.

Vortex breaker classifier wheel for a dynamic air classifier, machined and assembled in our workshop

Mechanical Sealing, Vibration Damping, and Wear Parts

In conventional pendulum mills, dust ingress past the roller seals is a leading cause of blocked rollers and unplanned stops. Our mechanical seal — laser-ground Coronit graphite cast iron with a dedicated lubrication system — is engineered for the high peripheral speeds of pendulum roller service, where standard sealing arrangements cannot survive.

Pendulum mills also vibrate by nature. We damp joint oscillation with elastomer ultra bushings at the pendulum joints, and we manufacture CNC-machined seal housings, bearing-hub revisions, and pendulum-mill spare and wear parts.

Pendulum roller assembly being lowered into the grinding chamber in our workshop: four pendulum rollers with their journals, mechanical seal housings, and grinding-ring liner
Running vibration test: a full water bottle stands upright on the housing of the operating mill.

Rotary Thermal Process Equipment

Alongside grinding systems, our reference base covers rotary thermal equipment: preheaters, sinter rotary kilns, rotary calciners, rotary coolers, and rotary and double-shell dryers — including production lines for Dead Burned Magnesia (DBM), Caustic Calcined Magnesia (CCM), and cristobalite.

Rotary kiln line at a magnesia plant in Greece, part of our rotary thermal equipment reference base

Broader Plant Scope

Beyond the lead specialties, we support the wider equipment needs of mineral processing plants.