This custom-manufactured unit supplies all necessary machines and equipment (starting from the dryer itself) required for chemical fertilizer plants. Briefly, the process of the unit covers feeding, conveying, rotary drying, cooling, rotary screening and packaging machines and equipment. Desired quantity of chemical fertilizer dust is transferred to rotary dryer by conveyor systems, and drying process is ensured with dehumidification of the material by means of burner hot air. At the next step of the process, rotary cooler and rotary screen is used in order to obtain the desired granule size of the fertilizer. Fertilizer granules are then conveyed to packaging unit and the process is completed.