Product Overview

The Ring Die Fertilizer Pellet Mill is a robust, industrial-grade granulation solution engineered to transform powdery and fibrous organic materials into uniform, high-density pellets. It is the core machine for modern organic fertilizer production lines, bio-organic fertilizer manufacturing, and compound fertilizer granulation. Designed for demanding continuous operation, this mill efficiently processes a wide range of raw materials—including fermented animal manure, agricultural waste (straw, peat), and composted municipal sludge—into commercial-grade fertilizer pellets. Its primary value lies in turning loose, difficult-to-handle organic matter into a stable, dust-free, and market-ready product that is easy to bag, store, transport, and apply, thereby increasing the value and profitability of your organic waste stream.

Features

High Efficiency & Premium Pellets: Achieves over 95% pelletizing rate with less than 10% fines. Produces hard, smooth pellets that minimize breakdown and dust during handling.

Dry Process & Adjustable Pressure: Uses a binder-free dry method, producing low-moisture pellets ideal for storage. Hydraulic system allows real-time pressure adjustment for compacting fibrous materials.

Wide Adaptability & Nutrient Preservation: Processes various organic materials. Pellet size is easily changed (2.5-8mm), and low-temperature operation preserves heat-sensitive nutrients.

Energy-Saving & Robust Build: Core components are made from wear-resistant alloys for durability. The optimized design ensures high output per kilowatt, lowering operating costs.

Working Process

The pellet formation is a continuous and efficient mechanical process:

Feeding & Distribution: Pre-crushed and uniformly mixed fertilizer powder is fed into the granulation chamber. A centrifugal distribution system ensures even material spread across the inner surface of the rotating ring die.

Compression & Extrusion: As the ring die rotates, two or more stationary, heavy-duty rollers exert tremendous pressure on the material layer, forcing it through the precisely machined holes in the die. This intense compression causes the fine particles to bind together naturally (through lignin plasticity and mechanical pressure) without needing added binders.

Cutting & Discharge: Long cylindrical strands of compacted material emerge from the outer side of the die. Adjustable, high-speed knives, mounted externally, cut these strands into pre-set, uniform lengths. The finished pellets are then discharged for cooling.

Applications

This machine is indispensable across multiple sectors focused on organic resource recycling and value-addition:

• Commercial Organic/Bio-organic Fertilizer Plants: The ideal solution for granulating fermented and composted materials (e.g., chicken manure, cow dung, mushroom substrate) into premium, slow-release organic fertilizer pellets for sale.

• Large-Scale Livestock & Poultry Farms: Enables on-site conversion of manure and bedding waste into manageable, value-added fertilizer products, solving waste disposal issues and creating a new revenue stream.

• Agricultural Cooperatives & Green Waste Processors: Converts crop residues (straw, husks), garden waste, and food processing by-products into standardized organic soil amendments.

• Compound Fertilizer Production: Used to granulate blended mixtures of organic and inorganic nutrients into uniform compound fertilizer pellets.

Product Details

Integral Role in a Complete Fertilizer Production Line

In a fully integrated fertilizer manufacturing plant, the Ring Die Pellet Mill is the central granulation equipment that defines the physical form of the final product.

Upstream Linkage: It receives finely ground and homogeneously blended raw material from pre-processors like crushers, mixers, and screening machines.

Core Granulation Unit: As the key pelleting machine, its performance determines the production line's hourly output, pellet quality, and overall efficiency.

Downstream Flow: The hot, soft pellets exiting the mill are immediately conveyed to a rotary cooler to reduce temperature and moisture. They are then passed through a rotary screener to separate out-sized pellets and fines (which are recycled). Finally, the on-spec pellets are coated in a coating drum to prevent caking before being sent to automatic weighing and bagging machines.

By ensuring high and stable granulation efficiency, this pellet mill is the critical link that maximizes the throughput, quality, and profitability of your entire fertilizer production system.

Ready to transform your organic materials into premium fertilizer pellets? Contact us today to discuss your project requirements, receive a detailed equipment quotation, or schedule a live material test with our technical team.