Industry Info

Equipment characteristics and operating process of roller granulator


The roller granulator is a dry granulation process that uses pressure to agglomerate solid materials. This is achieved by kneading the material through two opposite rotating roller shafts, which are driven by a bias sleeve or hydraulic system. When solid materials are kneaded, the air between the powder particles is first removed to rearrange the particles, in order to eliminate the gaps between the materials.

The roller squeezing granulator kneads the material through two opposite rotating rollers. When solid materials are subjected to external forces from the squeezing granulator, the gas between the powders is first cleaned and recombined, which can clear the empty space between the materials. When the material is squeezed and kneaded by a granulator, the particles will deform or move, generating a strong van der Waals gravitational recombination. In the final stage of the kneading and granulation process, the kinetic energy composed of working pressure to provide kinetic energy to the system forms a hot spot at the point contact between positive ions, but the material melts. After the temperature decreases and the material cools, it forms a fixed and non deformable particle.

The roller granulator is a granulation equipment that is produced using a non drying room temperature process. It is formed in one go and has a production capacity of 1-1.5 tons/hour and 1.5-3 tons/hour. This equipment has low investment, fast effectiveness, and good economic benefits. The complete equipment layout is compact, scientific and reasonable, and technologically advanced. Energy saving and consumption reduction, no discharge of three wastes, stable operation, reliable operation, and convenient repair. Wide adaptability of raw materials, suitable for granulation of various raw materials such as compound fertilizers, pharmaceuticals, chemicals, feed, etc., with high product granulation rate. It can produce various concentrations and types of compound fertilizers (including organic fertilizers, inorganic fertilizers, biological fertilizers, magnetized fertilizers, etc.). Especially for the granulation of rare earth, potassium fertilizer, and ammonium bicarbonate series compound fertilizers, it fills the domestic gap and ranks at the leading level in China.

The roller granulator is a key equipment for compound fertilizer granulation, with advanced technology, reasonable planning, compact structure, novel and practical, low energy consumption, and matching with corresponding equipment to form a small production line, which can form a certain capacity of continuous and mechanized production. The selection of eugenic formula eliminates the need for dryness and is produced at room temperature. The product is rolled and formed in one go, ensuring that the quality of the product meets the technical requirements of compound fertilizers. It is a specialized compound fertilizer with high, medium, and low concentrations used for producing various crops and an updated product for energy conservation and consumption reduction in the current compound fertilizer industry.

Fertilizer, white carbon black, inorganic salts, chloroisocyanurates, bleaching powder, pesticides, oxides, and industrial recovered dust materials, such as cast iron factory dust, lead, zinc, aluminum dust, converter dust, filter dust, grinding dust, etc The material is forcibly compressed and formed by mechanical pressure without adding any wetting agent, ensuring the purity of the product. The process flow is simple, with low energy consumption and high output. Dry powder is directly granulated without the need for subsequent drying processes, which is more conducive to the connection and transformation of existing production processes. The particle strength is high, and the increase in bulk density is more significant than other granulation methods. Especially suitable for occasions where product bulk density is added. The operation is flexible and adaptable to a wide range of scales. The kneading force can be adjusted through hydraulic pressure.