The present disclosure relates to a method for controlling the temperature in a granulator in which a melt of an hydrous nitrate mineral salt-based composition is granulated. The method comprises the steps of granulating the melt, separating out the undersized and oversized particles at the outlet of the granulator and recycling the undersized and oversized particles to the granulator, measuring the temperature in the granulator, adjusting the amounts of undersized and oversized particles recycled to the granulator according to the measured temperature in the granulator. The present disclosure further relates to low dust producing uncoated granules of a hydrous nitrate mineral salt-based composition.

The present disclosure relates to a method for controlling the temperature in a granulator in which a melt of an hydrous nitrate mineral salt-based composition is granulated. The method comprises the steps of granulating the melt, separating out the undersized and oversized particles at the outlet of the granulator and recycling the undersized and oversized particles to the granulator, measuring the temperature in the granulator, adjusting the amounts of undersized and oversized particles recycled to the granulator according to the measured temperature in the granulator. The present disclosure further relates to low dust producing uncoated granules of a hydrous nitrate mineral salt-based composition.

The present invention describes a device for pelletizing materials comprising a tiltable pelletizing disc configured for rotation, and a plurality of adjustable scraping modules attachable to the pelletizing disc, wherein each adjustable scraping module of the plurality of adjustable scraping modules includes a scraping blade and is configured to rotate the scraping blade in three angular directions.

A system for coating fertilizer substrates is provided. The system comprises a mixing unit wherein the mixing unit comprises a container bowl having an inlet portion and an outlet portion wherein the inlet portion is operatively fastened to a hot air conduit having a blowing unit connected at one end. The invention also relates to a process for coating fertilizer substrates and the coated substrates thereof.

Provided is a control method of a coating device that can perform coating of coating targets well. The control method of a coating device includes a coating tank (25) which includes a drum (28A) having a cylindrical shape and rotatable, and a disk (38A) having a dish shape and disposed to close a lower end of the drum (28A) and rotatable coaxially with the drum (28A). The method executes a first rotation process of setting a posture of the coating tank (25) in a standing posture in which a rotation axis of the coating tank (25) is directed in a vertical direction, rotating the drum (28A) in one direction, and rotating the disk (38A) in the other direction, and a second rotation process of setting a posture of the coating tank (25) in an inclined posture in which the rotation axis is inclined with respect to the vertical direction and rotating the drum (28A) and the disk (38A) in the one direction.

A device suitable for forming spherical particle clusters from fine powder is a device through which spherical particle clusters having a controlled particle size and a controlled hardness can be prepared from the fine powder by using a rolling granulation principle without adding any solution or solid binder. In particular, the device includes the following components: a) a preforming device for preforming particle clusters formed from fine powder, so that the particle clusters have a certain strength and shape while conveying the particle clusters to a next step at a certain speed; b) a spheroidizing device for further strengthening the particle clusters formed by a) the preforming device, so that the particle clusters have a higher sphericity and hardness; and c) a grading device for sieving the particle clusters spheroidized by b) the spheroidizing device to obtain particle clusters of different particle size ranges.