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Brief introduction to the roller press granulator

 DZJ series double roller press granulator is improved extrusion granulation equipment developed by our company based on years of production experience and customer feedback in production practice on the basis of the original two-roll extrusion granulation.This series of granulators has a wide range of applications, and its characteristics are as follows:
1. There is no drying process for the roller extrusion granulator, granulation at room temperature, one molding, less investment, quick effect and good economic benefit.
2. Compound fertilizer on the roller extrusion granulator power small operation is reliable, no three waste discharge, stable operation, convenient maintenance, reasonable process layout, advanced technology, low production costs.
3. The roller extrusion granulator has wide applicability and can be used for granulation of various raw materials such as compound fertilizer, medicine, chemical, feed, coal, metallurgy, etc., and can produce various concentrations and types of compound fertilizer(including Organic fertilizer, inorganic fertilizer, biological fertilizer, magnetic fertilizer, etc.).
4. The squeezing granulator of the roller, especially the rare earth, ammonium bicarbonate and ammonium sulphate compound granulation, fills the domestic blank and ranks at the domestic leading level. It is the promotion project of the national environmental protection applicable technology.

Performance characteristics:
The roll extrusion granulator is the key equipment for compound fertilizer granulation. It has advanced technology, reasonable design, compact structure, novel and practical, low energy consumption, and is matched with corresponding equipment to form a small production line, which can form a continuous and mechanized production. It adopts eugenic formula, does not need to be dried, and is produced at room temperature. The product is formed at the same time, so that the product quality meets the requirements of compound fertilizer technical specifications. It is industry's energy-saving and consumption-renewing product used for high, medium, and low-concentration special compound fertilizer for the production of various crops and the current compound fertilizer.

The working principle:
The work of the roll extrusion granulator mainly consists of two parts: 1. Extrusion. 2. Granulation. Extrusion: The dry material is agglomerated under pressure into a dense and hard mass (cake), which is called extrusion process. In this process, the principle of intermolecular forces in physics is utilized to allow the extruded molecules to freely combine into molecules of appropriate spatial density. Granulation: The extruded cake is then crushed and sieved to become granules, called the granulation process. After strict extrusion and granulation, our company's counter-roller granulator has a utilization rate of more than 87%. There are two types of extrusion: front discharge and side discharge. The prepared material is poured from the top of the roll extrusion granulator. The tank has a vertical auger. Through the rotation of the auger, the material is forcibly sent to the bottom of the two rolls to squeeze, the two rolls rotate relative to each other, so that the material sent into a cake, the cake into the granulator is broken by the rotating knife row, the broken material enters the granulator,the particles and a portion of the powdery material are sieved by rolling the knife row into a vibrating screen. Qualified particles are sent to the outside. The sifted powdery material is re-rolled back to the raw material bin for secondary rolling, and the magnitude of the pressing force can be controlled by the hydraulic system according to the granulation needs. By changing the groove form of the roll surface, materials such as sheets, strips, and flat balls can be obtained.