Seed Treating & Coating

Modern Coating Technology for Increase Growth Ability

The Centricoater optimizes the consumption of chemical agents and the impact on the environment is subsequently a reduction in raw material use.

The results are homogeneous coated seeds which all have improved growth ability and meet the international standards for certified seeds.

The system provides improved seed coverage and a most uniform distribution of treatment materials on the seed as compared to traditional continuous operating drum (screw) type treaters. Main attention is also paid to economical use of the expensive coating slurries, thus simply saving money for our valued customers.  This results in a very short pay-off period for Cimbria Centricoaters.

The Cimbria Heid Centricoater is designed for the application of coating value added seeds with costly seed treating materials. The system is a continuous batch operation utilizing a highly accurate inlet scale together with highly accurate chemical dosing systems controlled by a PLC.

The system provides improved seed coverage and a more uniform distribution of treatment materials on the seed as compared to traditional continuous operating drum type treaters.

Principles and Applications

Cimbria Centricoaters are continuous operated batch treaters. A precise electronic scale prepares the needed amount of seed (batch) for the next cycle. After the scale has fed the prepared batch to the mixing drum, the rotating bottom of the drum accelerates the seed to force it to climb up the drum wall, and to be folded back to the drum middle by means of the built-in deflectors.

According to a preset recipe, including amounts and timing, all selected slurries and powders are now added to the mixing drum.  Slurries are added onto a spinning disc in the middle, atomizing the slurries and spraying uniformly onto the moving seed. Powder is added directly on top of the moving seed. This provides an intensive and highly uniform application of seed treatment materials on each kernel of seed. Stringing all single batches together allows a continuous operation of the Centricoater in an automated seed line. Amounts of product and chemicals as well as time settings can be easily changed within the PLC control to achieve optimal results. Due to this very flexible setup the Centricoater can be used for a wide range of applications, for film coating as well as for incrustation and pelleting.

The heart of the Centricoater is the mixing chamber, consisting of a stainless cylindrical housing with rotating bottom (rotor). The seed is gently dropped from the continuous batch electronic scale into the chamber onto the rotor. This rotor moves the seed gently up to the stationary chamber side wall causing a folding of seed from outward to inward in the chamber. A spinning disk in the center of the mixing chamber, on which the treating materials are delivered from the PLC controlled dosing system, atomizes the liquid treating materials into the vertical seed layer. This provides a highly intensive uniform application of seed treatment material on each kernel of seed. All kinds of treating material, liquids and powders, can be applied effectively in this system.

Permanent process monitoring and data-logging by the Centricoaters PLC supports internal quality control as well as inventory management.

• European craftsmanship, made to order in Czech and Austria
• Weigh scale with electronic load cells
• Mixing chamber with batch sizes from 2 to 250kg
• Special adjustable mixing chamber paddles
• Central spinning disc for liquid
• Product contact areas are fabricated of stainless steel
• Electronically controlled feed and discharge gates
• PLC control system for total process automation