What is an roller press granulator production line?

A roller press granulator produciton line is a commonly used complete set of fertilizer production machine for organic fertilizer and compound fertilizer production. It relies on mechanical extrusion molding, eliminating the need for drying and low-temperature granulation. The process is simple, with low operating costs, and is suitable for granulating raw materials such as fermented manure, humic acid, wood ash, and mineral powder. The entire production line mainly consists of a raw material screening machine, a horizontal ribbon mixer, a double-roller extrusion granulator, a pellet shaping machine, a grading and screening machine, and finished product conveying equipment. The process is continuous and highly automated. During production, the fermented material and nutrient additives are first fed into the mixer for thorough mixing, adjusting moisture and fineness, and then fed into the extrusion granulator. Through strong extrusion by counter-rotating rollers, it is pressed into regular cylindrical granules. This production line has significant advantages: room-temperature molding does not damage organic matter and beneficial bacteria; the granules have high strength, are not easily broken, have a high granulation rate, and eliminate the need for drying and cooling processes, significantly saving energy. The equipment has a compact structure, small footprint, is easy to operate and maintain, and is suitable for a wide range of raw materials, processing both dry and wet mixtures. The moisture content, fineness, and proportions of the materials directly affect the granulation effect during production. Excessive moisture content leads to clumping, while insufficient moisture results in loose and easily broken granules. The extrusion pressure and roller gap must be properly adjusted to ensure uniform granule size. After screening to remove powder and broken particles, the produced granules can be directly packaged and stored. The entire production line operates stably, has moderate capacity, and low investment costs, making it the preferred granulation equipment for small and medium-sized organic fertilizer plants. It is widely used in the resource utilization of livestock and poultry manure and the processing of straw organic fertilizer.

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