Roll extrusion granulator is a commonly used organic fertilizer processing equipment, which can effectively extrude various organic materials into granular organic fertilizers. This granulation method is particularly suitable for low flow and low plasticity organic materials that are difficult to form through traditional granulation methods (such as disc granulation). The following are some of the main types of raw materials that can be processed by roller extrusion granulators for the production of organic fertilizers:

Animal manure: including chicken manure, pig manure, cow manure, etc. These animal excreta are rich in nitrogen, phosphorus, potassium and other elements, and are very high-quality organic fertilizer raw materials.

Crop straw: wheat straw, corn straw, rice straw, etc., rich in cellulose and lignin, can be used as the basic material for organic fertilizers after pretreatment.

Urban sludge: Sludge from sewage treatment plants, after dehydration and disinfection treatment, can be used as raw materials for organic fertilizers. The organic matter and nutrients contained in it are very beneficial for improving soil.

Food industry waste: such as soybean residue, distiller's grains, molasses, etc. These by-products are rich in protein, vitamins, and minerals, and are high-quality organic fertilizer raw materials.

Garden waste: leaves, branches, lawn trimmings, etc., can be crushed and fermented to become part of organic fertilizers.

Kitchen waste: Food residues generated by households and the catering industry can be converted into high-quality organic fertilizers through anaerobic digestion or aerobic composting treatment.

Pharmaceutical residue: Organic waste generated in the pharmaceutical industry, after appropriate treatment, can also be used as one of the raw materials for organic fertilizers.

Pulp and paper waste: These wastes contain a certain amount of cellulose and lignin, which can be extracted and concentrated for the production of organic fertilizers.

Algae: Seaweed, blue-green algae, etc., are rich in various trace elements and growth stimulants. After drying and crushing, they can be used as supplementary raw materials for organic fertilizers.

Shell waste: such as shells, shrimp shells, crab shells, etc., rich in minerals such as calcium and magnesium, can be used as additives in organic fertilizers after grinding treatment.

The roller extrusion granulator compresses the above raw materials under high pressure, causing them to deform and form stable particles in the mold holes. This process does not require additional adhesives and can be completed by relying solely on the physical properties of the materials themselves. Therefore, the roller extrusion granulator has a wide range of applications in the organic fertilizer industry, which can adapt to different types and characteristics of organic materials, produce organic fertilizer particles with regular morphology, high strength, and good solubility, and meet the demand for high-quality organic fertilizers in modern agriculture.