Double rollers are commonly used in fertilizer granulators to compress and shape materials...... In a double roller fertilizer granulator, the materials are fed into the machine and fall between two rotating rollers. The rollers rotate in opposite directions and compress the materials, forcing them through the die holes that are built into the machine. The die holes determine the size and shape of the granules. Double roller fertilizer granulators are often used to produce high-quality, evenly sized granules from a variety of materials, including organic and synthetic fertilizers. They are efficient, reliable, and easy to operate, making them a popular choice for fertilizer production plants. Additionally, the use of double rollers in the granulation process can help to reduce dust and improve the overall quality of the final product.