1. Overview
The 800kg/h Puffing Fish Feed Pellet Production Line is an integrated, automated system tailored for medium-to-large aquatic feed factories, intensive aquaculture bases, and commercial feed suppliers. It covers the entire process from raw material crushing to finished pellet packaging, producing 700-800kg of high-quality puffing fish feed per hour.
With core advantages of precise nutrition control, stable product quality, and high automation, this line solves the pain points of traditional manual feed production—uneven nutrition, low efficiency, and poor water stability. It can manufacture both floating and sinking pellets for fish, shrimp, crab, and other aquatic creatures, becoming a cornerstone of standardized, large-scale aquatic feed manufacturing.
2. Key Specifications of Fish Feed Pellets
The line produces feed pellets that meet high-end aquatic breeding standards, with strictly controlled key parameters:
| Specification Item | Details |
|---|---|
| Pellet Diameter | 0.9-10mm (adjustable by replacing extrusion dies), suitable for fry, juvenile, and adult aquatic animals. |
| Moisture Content | 18-20% before drying; reduced to ≤13% after drying (meets long-term storage requirements). |
| Temperature Before Cooling | ~80℃ (requires cooling to room temperature before packaging to avoid mildew). |
| Floating/Sinking Property | Both options available, determined by customized formulas (free after order placement). Floating pellets stay afloat for over 12 hours without dissolution. |
| Raw Material Composition | Fish oil, fishmeal, soy protein, wheat gluten, wheat, peas, minerals, vitamins, pigments, and canthaxanthin—balanced nutrition for aquatic growth. |
3. Full Production Process & Core Equipment
The line follows a 6-step closed-loop workflow, with each link equipped with specialized equipment to ensure stable quality. Below is the detailed process and equipment configuration:
3.1 Step 1: Raw Material Pretreatment (Crushing & Dust Removal)
- Equipment: Raw Material Silo → Screw Conveyor → Grain Crusher (Hammer Mill) → Dust Collector → Cyclone → Screw Lifter
- Function:
- Raw materials (fishmeal, corn, soybeans, etc.) are stored in the silo and conveyed to the hammer mill via a screw conveyor.
- The hammer mill (22-30kW, 3-5t/h capacity) crushes large materials into fine powder, laying the foundation for uniform mixing.
- The dust collector and cyclone capture floating powder during crushing, reducing workshop pollution and raw material waste.
- The screw lifter transports crushed powder to the mixer.
3.2 Step 2: Uniform Mixing of Ingredients
- Equipment: Dual-Shaft Paddle Mixer → Silo
- Function:The U-type dual-shaft mixer (250kg/batch, 7.5kW) blends crushed powder with additives (vitamins, minerals, fish oil) evenly, achieving a mixing uniformity of CV < 5%. This eliminates nutrient segregation, ensuring each pellet contains consistent nutrition. Mixed materials are temporarily stored in a silo for subsequent extrusion.
3.3 Step 3: Puffing & Pellet Formation
- Equipment: Bucket Elevator → Fish Feed Extruder → Steam Boiler (for wet-type extruder)
- Function:
- The bucket elevator lifts mixed materials to the extruder, the core equipment of the line.
- Two types of extruders are optional:
- Dry-Type: No steam boiler required; relies on screw friction to generate high temperature (＞100℃) and pressure, fully cooking materials and forming pellets.
- Wet-Type: Equipped with a conditioner, requiring a 0.3-0.5kg/h steam boiler (locally purchasable) to supply steam. Materials are pre-conditioned for smoother, denser pellets.
- The extruder (total power 55kW) produces 700-800kg of puffing pellets per hour, with diameter adjustable from 0.9-10mm.
3.4 Step 4: Drying & Cooling
- Equipment: Pneumatic Conveying → Pellet Dryer → Bucket Elevator → Counter-Flow Pellet Cooler
- Function:
- Hot, moist pellets (80℃, 18-20% moisture) are conveyed to the multi-layer net belt dryer (40-50kW). With 3/5/7 optional layers and adjustable belt speed, it controls drying time to reduce moisture to ≤13%.
- The bucket elevator transports dried pellets to the counter-flow cooler (3t/h, 11-15kW), which cools pellets to room temperature +3-5℃—avoiding mildew and ensuring storage stability.
3.5 Step 5: Post-Treatment (Coating)
- Equipment: Coating Machine
- Function:The coating machine (5.5-7.5kW) sprays oil, vitamins, and other heat-sensitive nutrients onto the cooled pellets. This post-addition technology preserves nutrient activity (avoids thermal damage during extrusion) and enhances pellet palatability.
3.6 Step 6: Automatic Packaging
- Equipment: Conveyor → Silo → Pellet Packing Machine
- Function:Coated pellets are conveyed to the storage silo, then packed into bags by the automatic packing machine. The machine features accurate weighing and reliable operation, suitable for particle materials with good fluidity—completing the final link of production.
4. Core Advantages
4.1 Stable High Capacity & Efficiency
With a designed output of 700-800kg/h, the line matches the production needs of medium-to-large feed enterprises. Key equipment (e.g., hammer mill, extruder) adopts high-power motors and optimized structures to support 24/7 continuous operation.
4.2 Superior Pellet Quality
- Uniform Nutrition: Dual-shaft mixer with CV < 5% ensures consistent nutrient distribution.
- Strong Water Stability: Puffing process creates dense pellets that float for over 12 hours, reducing nutrient leaching and water pollution.
- Safe & Digestible: High temperature (＞100℃) during extrusion kills salmonella and bacteria; starch gelatinization improves feed digestibility by 15-20%.
4.3 High Automation & Low Labor
The entire line is controlled by a centralized electric control system, realizing automatic material conveying, mixing, extrusion, and packaging. Only 2-3 operators are needed for the whole line, reducing labor costs by 60% compared to manual production.
4.4 Flexible Adaptability
- Floating/Sinking Dual Options: Custom formulas (free after order) support both floating (for surface-feeding fish) and sinking (for bottom-feeding fish) pellets.
- Adjustable Pellet Size: 0.9-10mm diameter covers fry, juvenile, and adult aquatic animals (shrimp, crab, tilapia, bass, etc.).
5. Applicable Scenarios
- Medium-to-Large Aquatic Feed Factories: Produce commercial fish/shrimp feed for regional sales, supported by standardized production and stable quality.
- Intensive Aquaculture Bases: Build on-site feed lines to supply self-use feed, controlling nutrition formulas and reducing reliance on external suppliers.
- Specialized Aquatic Feed Suppliers: Customize high-value feed (e.g., eel, sea bass feed) with adjustable formulas and pellet specifications.
6. Key Technical Parameters (Summary)
| System Module | Core Equipment | Capacity/Power | Key Function |
|---|---|---|---|
| Raw Material Crushing | Grain Crusher | 3-5t/h, 22-30kW | Crush raw materials into fine powder |
| Mixing | Dual-Shaft Mixer | 250kg/batch, 7.5kW | Uniformly blend powder & additives |
| Extrusion | Fish Feed Extruder | 700-800kg/h, total 55kW | Form puffing floating/sinking pellets |
| Drying & Cooling | Pellet Dryer/Cooler | Dryer: 40-50kW; Cooler: 3t/h, 11-15kW | Reduce moisture/temperature |
| Post-Treatment | Coating Machine | 5.5-7.5kW | Add oil/vitamins to pellets |
| Packaging | Pellet Packing Machine | – | Automatic weighing & bagging |
| Total Line | – | 700-800kg/h | Full-process feed production |