Prilling is the most effective method for transforming a melt into spherical particles of a specific size to create bulk solids that meet your ideal flow-rate specifications.


Prilling is the process of spray crystallization. A molten substance is sprayed to produce drops falling through a cooling medium and crystallizing into particles. Surface tension causes the liquid drops to adopt a spherical shape as this results in the smallest surface area/ volume ratio.

Prilling as a form of granulation (sometimes also referred to as congealing or beading) is cost effective for large outputs.

The process is applied in a large variety of industries, such as for the production of:

  • Fertilizers like Urea and technical Ammonium Nitrates;
  • Inorganic substances such as sodium hydroxide and Iodine;
  • Organic substances such as stearic acids and strearates;
  • Hydrates, quaternary ammonium compounds and waxes;
  • Essential oils, Carotenoides, Sterols, Marine oils, Omega 3/6 oils;
  • Terpernoides and Lipids such as glycerines, mono- di- and triglycerides, phospholipids and others.


The right partner

Kreber designs, constructs and maintains high-quality machines and systems for international chemical companies. Because our engineers intensively work on finding alternative manufacturing concepts and lowering operating expenses, we have established an impressive track record in the growing Bisphenol-A and Urea markets. We supply efficient and safe machines here that combine a high end-product quality with high production capacity against low energy consumption and minimal down time.

Rotary prillers

Prilling process animation
Prilling Tower
Prilling Machine
Rotary Prilling Bucket
Prill Solid Handling Equipment
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