A roller extrusion granulator is a key equipment for granulation, which has the following features and working principles:

Features

• Wide material adaptability: It is suitable for granulating various raw materials such as compound fertilizers, medicines, chemicals, feeds, coal, and metallurgy, and can produce various concentrations and types of products (including organic fertilizers, inorganic fertilizers, biological fertilizers, magnetic fertilizers, etc.).

• High granulation rate: The granulation rate of the roller extrusion granulator is high, usually more than 85%.

• Energy-saving and environmentally friendly: It granulates at room temperature without the need for drying measures such as fuel and gas, reducing energy consumption. At the same time, there is no three-waste discharge during the production process, which is green and environmentally friendly.

• Low investment and high efficiency: The equipment has a simple process flow, low investment, and quick results. It can be matched with corresponding equipment to form a small production line, realizing continuous and mechanized production.

Working Principle

• Extrusion: The core part of the roller extrusion granulator is composed of a pair of relatively rotating pressure rollers with grooves on the surface. The dry material enters the feed hopper and is compressed into a dense and hard mass (cake) under the high pressure of the pressure roller between the two rollers.

• Granulation: The extruded cake is then cut or broken into the required length of particles by a fixed or rotating tool. After strict extrusion and granulation, the utilization rate of the counter-roller granulator is high. By adjusting the gap and speed between the pressure rollers, the size and shape of the particles can be controlled.

Overall, the roller extrusion granulator is widely used in many industries due to its advantages of high efficiency, energy saving, and strong adaptability.