800-1000 KG/h Floating fish feed Extruder machine
Catering to the 800–1000 kg/h range, the DGP-160B (dry) and DSP-135B (wet) models are both available. The dry, boiler-free option suits areas with low power costs and no steam access, while the wet model uses precision steam conditioning to produce high-quality floating and sinking feed.
Running on an 8-hour workday, it is the perfect fit for clients with a daily demand of 6400kg (6.4 tons) and up, effectively supporting large-scale, continuous production.
Overview of 800-1000KG/H Floating Fish Feed Extruder Machine
The 0.8-1.0 t/h floating fish feed extruder is a medium-sized machine that balances production capacity, process precision, and formula adaptability.
The 0.8-1.0 t/h output is not fixed; the actual production rate varies based on the feed formula (e.g., starch and oil content), pellet diameter (0.6-8.0 mm), and process requirements (floating or sinking). For example, producing 1.5 mm floating feed may result in an output close to 0.8 t/h, while producing 4.0 mm pellets can reach 1.0 t/h or even higher.
For this capacity range, our company offers two main technical solutions:
DGP-160B Dry Type Extruder
DSP-135B Wet Type Extruder
DGP-160B Dry Type Extruder
— 800-1000 kg/h Steam-Free Fish Feed Production Line Solution
This machine does not rely on an external steam source. It achieves expansion through the heat generated by the mechanical friction of materials during the extrusion process.
The DGP-160B features a relatively simple structure and a small footprint, making it ideal for production sites with low electricity costs or limited steam access. However, its adaptability to raw material moisture and formulas is slightly lower.
Equipment Model Breakdown
- RICHI Machinery: Brand
- DGP: Equipment Series
- 160: Screw Diameter is 160 mm (i.e., φ160)
Key Equipment Parameters
- Capacity: 800-1000 kg/h
- Main Motor Power: 90 kW
- Screw Diameter: φ160 mm
- Overall Dimensions: 3100×2650×1800 (mm)
Application Fields & Scenarios
- Applicable For: Aquatic fish/shrimp feed, pet food, extruded pellets
- Performance Features: Steam-free, boiler-free; relies on frictional heat for expansion
- Application Scenarios: Small-scale feed plants, designed to work with crushers, mixers, dryers, coating machines, etc
DSP-135B Wet Type Extruder
— 800-1000 kg/h High-Quality Steam Conditioning Fish Feed Production Solution
This machine requires an external steam system and is specifically designed for aquatic feed plants pursuing high quality and large-scale production. By precisely injecting steam into the barrel, it achieves accurate control over material temperature and moisture.
The feed produced by this model features a higher degree of cooking, a smoother pellet appearance, and superior water stability, making it ideal for the long-term commercial production of high-quality floating or sinking fish feed.
Equipment Model Breakdown
- RICHI Machinery: Brand
- DSP: Equipment Series
- 135: Screw Diameter is 135 mm (i.e., φ135)
Key Equipment Parameters
- Capacity: 800-1000 kg/h
- Main Motor Power: 75 kW
- Screw Diameter: φ135 mm
- Overall Dimensions: 3750×1980×1950 (mm)
Application Fields & Scenarios
- Applicable For: High-quality floating fish feed, sinking fish feed, shrimp feed, pet food, etc.
- Performance Features: Requires a boiler / steam system
- Application Scenarios: Medium to large-scale aquatic feed plants
DGP-160B vs. DSP-135B Fish Feed Extruder Machine
As two core machines in the feed processing sector, the DGP-160B Dry Extruder and the DSP-135B Wet Extruder feature distinct process designs to meet different production scenarios and requirements. The following table provides a systematic comparison across multiple dimensions, helping you make the right choice based on your production conditions and product positioning. (→Swipe right to view)
| Comparison Dimension | DGP-160B Dry Type Extruder | DSP-135B Wet Type Extruder |
| Operating Principle | Mechanical friction generates heat, no external steam required | Precise steam injection into barrel to control temperature and moisture |
| Steam Dependency | No steam, no boiler required | Requires boiler / steam system |
| Raw Material Suitability | Weaker adaptability to moisture and formulation | Stronger adaptability to raw material moisture and formulation |
| Product Quality | Meets basic expansion requirements | Higher gelatinization, smoother pellet surface, better water stability |
| Applicable Products | Aquatic fish/shrimp feed, pet food, expanded pellets | High-quality floating/sinking fish feed, shrimp feed, pet food |
| Application Fields | Small-scale feed mills (where electricity cost is low or steam is hard to obtain) | Medium to large-scale commercial aquatic feed mills |
| Output | 800-1000 kg/h | 800-1000 kg/h |
| Main Motor Power | 90 kW | 75 kW |
| Screw Diameter | φ160 mm | φ135 mm |
| Machine Dimensions (mm) | 3100×2650×1800 | 3750×1980×1950 |
| Footprint | Smaller | Larger |
| Supporting Equipment | Hammer mill, mixer, dryer, sprayer, etc. | Requires additional steam boiler system |
Other Extruder Models Display
DGP-90B Dry Type Extruder
Output: 0.3-0.4 T/H
Power:37 kW
DGP-120B Dry Type Extruder
Output: 0.5-0.6 T/H
Power:55 kW
DSP-90B Wet Type Extruder
Output: 0.5-0.6 T/H
Power:37 kW
The Structure of the Floating Fish Feed Extruder Machine
Essentially, the structure of the fish feed extruder is designed around the continuous process of “conveying → compression → cooking → forming → expansion.” The entire machine features multiple functional modules that work in synergy, ensuring that raw materials are transformed from powder into expanded pellets in a short time.
It is not a single piece of equipment, but a system that highly integrates mechanical energy, thermal energy, and process control. Every structural module directly impacts the final feed quality and production efficiency.
1. Feeding System
Responsible for stably and continuously feeding the uniformly mixed raw materials into the barrel.
It typically uses variable frequency speed control, allowing the feed rate to be adjusted according to production capacity requirements to prevent material blockage or interruption.
2. Conditioning System (Exclusive to Wet Extruders)
Primarily used in wet extruders. By adding steam and moisture to the raw materials, it performs pre-cooking.
This significantly improves the degree of starch gelatinization and protein denaturation, making it a critical stage that determines feed quality.
3. Extrusion System (The Core Component)
Consists of the screw and the barrel. The screw is responsible for propelling, compressing, and shearing the material. The barrel provides a high-temperature, high-pressure environment.
During this process, mechanical energy is converted into thermal energy, achieving cooking and plasticization.
4. Heating System (Available for both Dry and Wet Models)
Used to assist in regulating the barrel temperature.
Dry Type: Primarily relies on mechanical friction for heating, supplemented by electric heating.
Wet Type: Primarily relies on steam heating, offering more precise temperature control.
5. Die System
Determines the final shape and size of the pellets. By changing dies with different apertures (e.g., 0.6–8 mm), various specifications of fish feed can be produced.
The cutter is responsible for cutting the continuously extruded material column into uniform pellets.
6. Cutting System
Installed at the die outlet. It controls the pellet length by adjusting the rotation speed, directly influencing the appearance and uniformity of the final product.
7. Drive System
Includes the motor, reducer, coupling, etc. It provides stable power output to the screw and is key to ensuring the long-term stable operation of the equipment.
8. Control System
Used for centralized control of equipment operating parameters, such as feeding speed, main unit speed, and temperature. High-end models can achieve automated control, improving production stability and consistency.
Characteristics of Feed Produced by the Fish Feed Extruder
Extruded feed, processed by a fish feed extruder (whether dry or wet type), undergoes a high-temperature, high-pressure, short-time treatment followed by instant pressure-release expansion. This process gelatinizes the internal starch and denatures the protein, forming a porous and loose pellet structure.
This unique processing method gives the feed numerous advantages over traditional hard pellets, with significant improvements across three dimensions: physical form, nutritional value, and aquaculture performance. These will be detailed in the following sections.
1. Physical Characteristics（Swipe right to view）
Excellent Expansion
The feed pellets feature a uniform, sponge-like micro-porous structure and a loose texture. Floating feed can stay on the water surface for a long time (typically over 12 hours), making it easy to observe fish feeding and reducing feed waste.
Superior Water Stability
The extrusion process ensures thorough starch gelatinization, so the pellets do not easily dissolve or disintegrate in water. Sinking feed can maintain its shape for over 30 minutes, while floating feed remains stable for hours, effectively reducing the risk of water pollution.
Controllable Floating/Sinking Properties
By adjusting the formula, process parameters (temperature, pressure, moisture), and die design, you can produce floating feed (for surface-feeding fish like Tilapia and Carp) or sinking feed (for bottom-dwelling animals like shrimp, crab, and flatfish).
Uniform Pellet Appearance
Equipped with precision dies and high-speed rotary cutters, the pellets are consistent in length, neat in cross-section, smooth in surface, and even in color, ensuring excellent commercial value.
Wide Range of Pellet Sizes
Capable of producing pellets with diameters from 0.6 to 8.0 mm, meeting the feeding needs of all life stages—from fry to adult fish—and for various species, from small ornamental fish to large commercial fish.
2. Nutritional Characteristics（Swipe right to view）
High Starch Gelatinization
The high-temperature and high-pressure treatment ensures thorough starch gelatinization (reaching over 90%). This significantly improves the fish’s digestion and absorption rate of carbohydrates, reducing undigested starch in the feces.
Enhanced Protein Digestibility
The heat treatment during extrusion unfolds the protein molecular structure (moderate denaturation), making it easier for fish digestive enzymes to break down.
Elimination of Anti-nutritional Factors
The high-temperature process effectively destroys anti-nutritional factors in raw materials (such as trypsin inhibitors, phytates, and hemagglutinins), thereby improving feed safety.
Hygiene and Safety
The high-temperature and high-pressure environment during extrusion kills harmful microorganisms like Salmonella and E. coli, significantly reducing the risk of biological contamination in the feed.
Flexible Fat Addition
Fats (especially heat-sensitive oils and vitamins) can be added via a post-coating process. This avoids the destruction of heat-sensitive nutrients by high temperatures, while also enabling high-fat formulas.
3. Aquaculture Performance（Swipe right to view）
Improved Feed Conversion Ratio (FCR)
Thanks to enhanced digestion and absorption, less feed is required for the same weight gain in fish. The feed conversion ratio (FCR) can be reduced by 0.1-0.3, directly lowering farming costs.
Accelerated Growth Rate
With higher nutrient utilization, fish grow significantly faster than those fed with traditional hard pellets.
Reduced Water Pollution
The feed features excellent water stability and high digestibility, resulting in less uneaten or undigested residue. This reduces the production of harmful substances like ammonia and nitrite, easing the burden of water exchange and wastewater treatment.
Lower Disease Incidence
The high-temperature sterilization process minimizes the risk of pathogen transmission through feed. Meanwhile, consistent nutrient absorption helps boost the immunity of farmed fish.
Easy Monitoring of Feeding
Floating feed remains on the water surface, allowing farmers to visually monitor fish feeding activity. This enables timely adjustment of feeding amounts, preventing overfeeding, waste, and pollution.
Fish Feed & Pet Food Extruded by Our Feed Extruder Machine
Backed by mature and stable extrusion technology and flexible formula adaptability, our feed extruders are capable of producing a wide range of aquatic feed and pet food.
From floating and sinking fish feed in various specifications, to pet food with uniform pellets and excellent palatability, we ensure stable forming and mass production.
Through precise control over expansion, pellet density, and appearance, the final products deliver optimal performance in water stability, palatability, and nutrient utilization.
The Complete Extrusion Process for Fish Feed
The extrusion process for fish feed is far more than simple shaping. It is a systematic engineering process comprising multiple stages: conveying, mixing, conditioning, extrusion, expansion, cutting, drying, and coating.
The process parameters of each stage—including temperature, pressure, moisture, and time—directly impact the final feed quality.
The following section provides a complete breakdown of this process chain, helping you understand how high-quality extruded feed is produced.
1
Raw Material Receiving & Cleaning
Receive various powdered raw materials (fish meal, soybean meal, corn flour, wheat flour, etc.). Use vibrating screens and magnetic separators to remove large impurities and metal foreign objects, protecting the safe operation of downstream equipment.
2
Grinding
Grind raw materials to over 80 mesh (fineness approx. 0.18mm). This ensures complete starch gelatinization and uniform protein denaturation during subsequent conditioning and extrusion. Grinding fineness directly affects the expansion ratio and water stability of the feed pellets.
3
Batching & Mixing
Weigh raw materials according to the formula ratio and feed them into the mixer. This ensures uniform distribution of all components, guaranteeing consistent nutrition in every pellet.
4
Extrusion & Expansion (The Core Process)
Feed the mixed material into the extruder. Under high temperature, high pressure, and high shear, the starch gelatinizes, proteins denature, and the material melts before being extruded from the die.
As the external pressure drops suddenly, moisture instantly vaporizes and expands, forming a porous, fluffy structure. This process simultaneously completes cooking, shaping, and sterilization, making it the critical step that determines the product’s palatability, shape, and quality.
5
Drying
The freshly extruded expanded pellets have high moisture content. They must be passed through a dryer to reduce the moisture to below 10%, making them suitable for storage and transportation.
6
Spraying
Dried pellets enter the coating machine, where heat-sensitive ingredients like oils, vitamins, and probiotics are added. Since these ingredients cannot withstand high temperatures, they must be added after extrusion and drying.
7
Cooling
The coated pellets are still hot and must be cooled to 3-5°C above room temperature using a counter-flow cooler. This also further removes surface moisture. The cooled pellets become crisp and hard, making them less prone to breakage and easier to package and store.
8
Screening & Packaging
Finished products pass through a vibrating screen to remove fine powder and irregular pellets, ensuring uniform particle size.
They are then weighed and sealed by an automatic quantitative packaging scale, ready for warehousing or shipment. The collected fine powder can be recycled back into the production line.
Standard Configuration List for the 800-1000 kg/h Fish Feed Production Line
The following is the typical equipment configuration list for this capacity range, helping you quickly understand the composition and functional layout of the entire line.
Cylindrical primary cleaning screen
Production: 1-25 tons/hour
Power: 30-160 kW
Removes large impurities like stones, ropes, and debris.
Hammer mill
Grinding fineness：0.5-20mm
Rotational speed ：2980 rpm
Uses high-speed rotating hammers to crush raw materials into the desired particle size.
Paddle mixer
Effective volume ：0.5-4 m3
Mixing amount per batch ：250-2000 kg/P
Thoroughly mixes multiple raw materials and additives according to the formula.
Belt dryer
Pellet Size ：6-8mm
Mesh belt width ：0.8-1.6 m
Uses continuous conveying to evenly dry formed materials, reducing moisture content.
Vacuum spraying machine
Matching production capacity:1- 15 t/h
Batch working time: 6 min
Uniformly sprays oil or functional liquids onto pellet surfaces under vacuum conditions.
Cooler
Drying area：13-58m2
Mesh belt width ：0.8-1.6 m
Uses counter-flow cold air to cool hot pellets.
Screener
Output: 2-50 tons/hour
Screen angle ：19°
Separates qualified pellets from powder, oversized, or undersized particles.
Packaging machine
Package range ：10-50kg/bag ( adjustable )
Packaging speed ：2-8 packs/minute
Automatically weighs, fills, and seals finished feed products.
RICHI’s Completed Aquatic Feed Plant Projects
With years of deep expertise in the R&D and manufacturing of fish feed equipment, RICHI has successfully completed numerous delivery projects worldwide.
From single-machine solutions for small-scale production to large-scale automated factories, we consistently build highly stable and cost-effective production systems for our clients, adhering to the standards of a professional fish feed machinery manufacturer.
Below are some of our project cases that have been commissioned and are operating stably long-term, helping you to more intuitively understand our capabilities and delivery capacity.
DRC Fish Feed Plant
Capacity: 1 t/h
Region: DRC, Africa
Application: Feed production for Tilapia and Catfish.
Pellet Size: 1.5-6 mm fish feed pellets.
Iranian Fish & Shrimp Extruded Feed Production Line
Capacity: 2 t/h
Region: Iran, Asia
Application: Feed production for fish and shrimp.
Pellet Size: 1-8 mm feed pellets. Learn More
Indonesian Shrimp Feed Pellet Production Line
Capacity: 2 t/h
Region: Indonesia, Asia
Application: Feed production for shrimp
Pellet Size: 0.6-8 mm
Malaysia Animal Feed Processing Plant
Capacity: 1-3 t/h
Region: Malaysia, Asia
Application: Feed production for Tilapia, Catfish, Grouper, Shrimp, as well as Chicken and Duck.
Pellet Size: 1-8 mm for fish/shrimp; 2-5 mm for chicken/duck.
Vietnam Aquatic Feed Processing Plant
Capacity: 4 t/h
Region: Vietnam, Asia
Application: Feed production for Tilapia, Catfish, and White Shrimp.
Pellet Size: 0.8-5 mm for fish; 0.8-2 mm for shrimp.
Turkish pet food and floating fish feed production line
Capacity: 1 t/h
Region: Turkey, Asia
Application: Feed production for trout, bass, and snapper; pet food pellets
Pellet Size: 5-8 mm fish feed; 2-6 mm cat, dog food pellets.
FAQ About Fish Feed Machine
If you have any questions about extruders or feed production, you can first take a look at these answers.
1. Can this machine produce both floating and sinking feed? Do we need to change any parts?
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Yes, absolutely. By adjusting process parameters such as the formula, conditioning temperature, and screw speed, the same machine can switch between floating and sinking pellets. Floating feed requires a higher expansion rate, which is achieved by adjusting the steam input and screw configuration—no major parts need to be replaced. However, for frequent switching, we recommend having different dies (ring molds) to ensure the best forming quality.
2. What is the pellet size range achievable by changing the die?
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By changing the die with different hole diameters, our fish feed machine can produce pellets ranging from 0.8mm to 14mm.
The 0.8mm to 1.5mm size is suitable for fry and shrimp starter feed; the 1.5mm to 4.0mm size applies to Tilapia and Shrimp; the 4.0mm to 8.0mm size is ideal for adult fish and frogs; and the 8.0mm to 14.0mm size is suitable for cat and dog pet food. One single fish feed machine covers a wide range of applications, from small-scale aquaculture to pet food production.
3. Can this fish feed pellet machine be used alone, or does it require other equipment?
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The machine can operate independently. You can feed the pre-mixed powder directly into the extruder to produce expanded pellets.
However, if you want to produce shelf-stable finished feed, you need to add drying and cooling equipment. If you are processing from raw ingredients, you will also need a grinder and mixer. We offer complete turnkey solutions, providing all equipment—grinding, mixing, extruding, drying, cooling, and packaging—to help you build a full production line from raw material to finished product.
4. Is professional training required to operate this machine?
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No. The machine features a variable frequency feeding system and an intuitive control panel. Key parameters (temperature, speed, cutter position) are clearly marked. An ordinary worker can master daily operations like starting, production, and stopping after just 1-2 days of video training. We provide detailed English manuals and operation videos. We also offer online support for overseas customers.
Explore Complete Aquatic Feed Pellet Machine
Begin production at 0.3T/H, starting from just $7,500. Versatile in handling multiple formulations and ingredients, it delivers uninterrupted
manufacturing of aquatic feed, pet food, and animal feed pellets – all with reliable, consistent buoyancy control.
Company Profile
Founded in 1995, RICHI Machinery Co., Ltd. is a manufacturer of feed machinery processing equipment and complete plant engineering, primarily focused on the feed machinery industry. We specialize in animal feed pellet mills, aquatic feed pellet mills, wood chip pellet mills, grain storage systems, and steel structure buildings. The research and development and production of aquatic feed pellet mills are a crucial component of our business.
In the aquaculture field, we offer complete production lines including fish/shrimp/crab feed pellet machines, feed extruders, crushers, mixers, dryers, coating systems, coolers, sieving equipment, and fully automatic packaging systems. We can customize efficient and energy-saving feed production solutions for customers according to the needs of various aquatic animals and pets.
300+
We have helped build hundreds of shrimp/fish feed production lines from scratch.
140+
Our feed pelletizing equipment has been sold to 140+ of the 200+ countries and regions in the world.
1000+
We now offer our related services to so many feed producers worldwide.
International Certification
All our equipment has passed ISO9001:2008, CE, CU-TR and other certifications.
We are a top maker and supplier of machines for shrimp/crab/fish feed and pet food.
For many yearsour shrimp/fish feed equipment have reached the USA, Canada, Russia, Uzbekistan, Ukraine, lran, Indonesia, Romania, Angola, Pakistan, Ethiopia, the UK, etc.
