SHRIMP FEED PELLET MACHINE
The shrimp feed pellet machine is a core piece of equipment for producing various shrimp feeds, prawn feeds, and sinking fish pellet feeds, with a single machine capacity ranging from 0.2 to 10 tons per hour.
The produced feed pellets exhibit excellent stability in water, remaining intact for several hours, and are easily absorbed by shrimp after consumption. It is widely used in aquaculture farms and aquatic feed production enterprises.
TYPES OF SHRIMP FEED AND RAW MATERIALS
Our shrimp feed pellet machine can produce a wide variety of shrimp feeds, from general formulated feeds that meet basic nutritional needs to specialized feeds tailored to specific growth stages and requirements.
Examples include juvenile shrimp feed, adult shrimp feed, high-protein feed, seedling feed, fattening feed, broodstock feed, and functional shrimp feed, among others.
The formulation of shrimp feed needs to be flexibly adjusted based on cost, shrimp species, and farming stage, but the core components all revolve around the following main categories.
Protein Source
Protein is the core ingredient in shrimp feed, providing the essential proteins and amino acids for shrimp growth.
- Fishmeal, shrimp meal, krill meal, soybean meal, and peanut meal are high-quality protein sources with high digestibility and absorption rates.
Energy Source
Provides energy and also acts as a binder and filler in the feed, helping it to take shape.
- Main raw materials include high-gluten flour, wheat middlings, corn starch, wheat bran, rice bran, and sugarcane bagasse.
Fat Source
Provides energy and essential fatty acids, crucial for shrimp growth and development.
- Common raw materials include fish oil, phospholipid oil, soybean oil, and tallow.
Minerals and Vitamins
Minerals and vitamins are essential additives in shrimp feed, used to ensure the health and normal physiological functions of shrimp.
- Main additives include calcium dihydrogen phosphate, compound mineral salts, compound vitamins, shell powder, and choline chloride.
Functional Additives
Functional additives are mainly used to enhance shrimp immunity, promote molting, improve digestion, or reduce environmental pollution.
- Various additives can be added, such as immune polysaccharides, molting agents, traditional Chinese medicine, probiotics, and papain.
SHRIMP FEED PELLET MACHINE Video
Unlike fish, shrimp cannot swallow whole feed pellets. They chew the pellets into smaller pieces before eating, and their digestive systems are also relatively weak. Therefore, a shrimp feed pellet mill capable of producing water-resistant and easily digestible shrimp feed is needed.
Our R&D, design, and manufacturing shrimp feed pellet machine is a ring die feed pellet mill with a three-layer conditioner, offering higher capacity, better pelleting results, and lower energy consumption. The shrimp feed pellets produced by this machine have more complete nutritional value, better water resistance, better palatability, and are easier to digest and absorb.
Shrimp feed pellet mill demonstration
Conditioner: Three-layer
Capacity: 0.2-10T/H
Particle size: 1.0-4.0 mm
Price: $7,000-$100,000
Demonstration of shrimp feed production process
Production line capacity: 1.0-60T/H
Main equipment: Ultrafine pulverizer, mesh belt dryer, mixer, cooler
Features: Modular, customizable
SHRIMP FEED PELLET MACHINE STRUCTURE & FEATURES
The RICHI shrimp feed pellet machine’s structural design fully considers the feeding habits of shrimp and the processing characteristics of shrimp feed raw materials and pellets, aiming to produce high-quality shrimp feed pellets with uniform particle size, good stability, and suitability for aquaculture. The main structure and design details of this shrimp feed pellet machine are detailed below.
Variable Frequency Feeder
Three-Layer Stainless Steel Conditioner
Pelletizing Chamber
Imported Siemens Motor
Variable Frequency Feeder
The variable frequency motor, stainless steel conditioner, and reducer together constitute the variable frequency feeder of the shrimp feed pellet machine. In actual operation, the feeder is usually connected to the arch-breaking structure to ensure that the shrimp feed is fed into the conditioner at a uniform speed.
Similar to RICHI animal feed pellet machines, all feeders, conditioners, feeder inlets, ring dies, and other parts in contact with the feed are made of food-grade 304 stainless steel, as can be seen from the embossing process.
Three-Layer Stainless Steel Conditioner
Compared to single-layer and double-layer conditioners, the three-layer conditioner doubles the conditioning time for shrimp feed, resulting in better gelatinization and improved pelleting. Simultaneously, the feed has a higher degree of maturity, which is beneficial for shrimp digestion and absorption. The sterilization effect is more thorough, reducing the incidence of disease.
Pelletizing Chamber
The main components of the pelleting chamber include a dedicated shrimp feed feeding switch plate, pressure rollers, ring die, and cutter. The conditioned material enters the pelleting chamber through a feed trough. A feed tray evenly distributes it between the ring die and the pressure rollers, then it is extruded through the ring die holes and cut by a cutter.
Note: Shrimp feed pellets are generally 1-3 mm in diameter and 1.5-2 times their diameter in length. The compression ratio of the shrimp feed ring die is 1:20-1:25.
Imported Siemens Motor
Due to the high compression ratio of shrimp feed and the difficulty of pelleting, a higher displacement motor is required. Our shrimp feed pellet machine uses an imported Siemens motor as its main motor, which can provide a stable power source even under prolonged high-intensity operation, ensuring the stability of the feed production process.
SHRIMP FEED Pellet MILL Models & Specifications
| Model | SZLH250 | SZLH320 | SZLH350 | SZLH420 | SZLH508 | SZLH558 | SZLH678 | SZLH768 | SZLH858 |
|---|---|---|---|---|---|---|---|---|---|
| Capacity(T/H) | 0.2-0.4 | 0.6-0.8 | 1-1.4 | 1.5-2.5 | 2.0-3.5 | 3-5 | 4-6 | 5-8 | 7-10 |
| Main Motor Power(kw) | 22 | 22 | 37 | 90 | 132 | 180/220 | 220/250 | 250/280 | 315/355 |
| Feeder Power(kw) | 0.75 | 1.5 | 1.5 | 1.5 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 |
| Conditioner power(kw) | 1.5 | 2.2 | 3 | 7.5 | 11 | 11 | 11 | 11 | 15 |
| Ring Die Diameter(mm) | 250 | 320 | 350 | 420 | 508 | 558 | 678 | 768 | 858 |
| Finished shrimp feed pellet diameter(mm) | 1-4 | 1-4 | 1-4 | 1-4 | 1-4 | 1-4 | 1-4 | 1-4 | 1-4 |
Note: The capacity shown is the rated output of the entire feeding line. The actual output may vary depending on the specific circumstances. Please refer to the actual production situation.
SHRIMP FEED MAKING MACHINE PROJECT
With over 30 years of experience in the R&D and manufacturing of aquatic feed equipment, RICHI conducts in-depth research into the actual needs of shrimp farming enterprises and shrimp feed producers in raw material processing, crushing, mixing, pelleting, cooling, screening, and packaging. Based on different shrimp species, growth stages, and feed specifications, RICHI has specifically optimized the complete production processes and equipment for shrimp feed pellet machines and shrimp feed mills.
Based on its long-term technical experience and project accumulation, RICHI has provided shrimp feed production project solutions for several major shrimp farming markets, including Ecuador, India, Vietnam, Indonesia, Thailand, Malaysia, and Bangladesh, covering project construction from single-machine equipment to complete shrimp feed production lines.
Bangladesh | 1-2 T/H Shrimp Feed Production Line Project
Indonesia | 1.5-3 T/H Shrimp Feed Production Line Project
India | 3 T/H White Shrimp Feed Production Line Project
Ecuador | 4 T/H White Shrimp Feed Mill Expansion
Vietnam | 4-5 T/H White Prawn and Black Tiger Prawn Feed Project
Bangladesh | 1-2T/H Shrimp Feed Production Line Project
This project is a newly built specialized shrimp feed production line in Dhaka, Bangladesh. It adopts a modular design, integrating the entire process from raw material receiving, micro-grinding, ingredient mixing, pelleting to finished product packaging.
The project primarily produces feed for tiger prawns. The production line is equipped with an ultra-micro-grinding system, a high-efficiency twin-shaft mixer, a shrimp feed pellet machine, a cooling and drying system, and an automatic spraying system for the precise addition of functional oils and additives such as fish oil and immune enhancers. Pellet sizes range from 0.8mm to 2.5mm.
Production Results
- Pellet stability in water greater than 4.5 hours, effectively reducing feed loss.
- Customer feedback indicates a reduction of approximately 15% in the breeding cycle.
- Production line automation reaches 80%, requiring only 4-5 operators.
Indonesia | 1.5-3T/H Shrimp Feed Production Line Project
Located in Sumatra, this project’s production line design fully considers the hot and humid tropical climate, utilizing corrosion-resistant 304 stainless steel equipment and enhanced electrical protection systems.
Key configurations include: an ultra-fine pulverizer (pulverization fineness <0.3mm), a high-precision automatic batching system (capable of adding functional additives at proportions as low as 0.1%), a multi-stage liquid spraying system, and an automated packaging and palletizing system.
Production Benefits
- Annual production capacity of approximately 5000 tons, with a capacity utilization rate exceeding 90%.
- Finished pellet stability in water reaches 6 hours.
- The entire line is equipped with a centralized control system, reducing operator requirements by 30%.
India | 3T/H White Shrimp Feed Production Line Project
This production line is designed to meet the production needs of both medium-grade feed and starter feed for white shrimp larvae, making it a high-end shrimp feed production line capable of producing both products simultaneously.
The main equipment includes: a shrimp feed pellet mill, an ultrafine grinding system, a mesh belt dryer, a precision liquid spraying system, and a fully automatic packaging system. During the raw material processing stage, a high-grid sieve grading system is specially designed to ensure uniform particle size distribution of the ground raw materials.
Production Results
- Pellet stability in water exceeds 6 hours
- Pellet sinking rate reaches 98%, effectively reducing feed loss
- High degree of automation, simple operation, leading to repeat purchases from the customer for subsequent phase two expansions.
Ecuador | 4T/H White Shrimp Feed Mill Expansion
This project involves expanding the production line of the company’s existing large-scale shrimp feed mill.
The core equipment of the expansion line includes: an ultra-fine grinding system, a shrimp feed pellet machine, a digital control system (achieving fully automated management from raw material receiving and production planning to finished product packaging and shipping), and an integrated drying-coating-cooling post-processing system.
Production Results
- Finished pellet diameter is precisely controlled within multiple specifications of 1.2mm, 1.5mm, 1.8mm, 2.0mm, and 2.5mm.
- Pellet stability in water is greater than 6 hours; products are exported to shrimp farming areas in neighboring Latin American countries.
Vietnam | 4-5T/H White Prawn and Black Tiger Prawn Feed Project
Located in the core shrimp farming area of Vietnam, this project utilizes two shrimp feed pellet machines combined into a flexible production line capable of producing feed for both white prawns and black tiger prawns. The client can dynamically adjust the production schedule according to market demand.
Key equipment includes: an ultra-fine grinding system, mixing equipment, a high-precision batching system, a Prawn feed making machine and an intelligent drying-spraying-cooling post-processing system. The spray coating system achieves an oil addition accuracy of ±0.5%, providing technological assurance for low-starch, high-fat shrimp feed formulations.
Production Results
- Finished pellet sizes cover 1.2mm-3.0mm
- Pellet stability in water >5 hours
- The production line has a reserved interface for extruded floating feed to meet the future growth demand in the micro-particle starter feed market.
shrimp feed production PROCESS AND KEY TECHNOLOGIES
— Richi Manufacture —
In order to obtain high-quality shrimp feed pellets, we not only need a high-quality shrimp feed preparation and shrimp feed pellet machine, but also need to crush raw materials and other processes. Below is a design diagram of a 2.5-5T/H shrimp feed production line to help you understand the shrimp feed production process.
Shrimp feed production process:
Raw material receving – rough crushing – batching & mixing – micro crushing – secondary mixing – pelletizing – post-curing – cooling – screening – Final shrimp feed pellet packaging
Technology key points：
- The high-grade shrimp feed manufacturing process usually consists of twice crushing and twice mixing, the first using a drop-type hammer mill to coarsely crush the raw materials, and the second using an ultrafine grinder to crush the shrimp feed to 80-90 mesh. Because the smaller the pulverized particle size of the feed, the larger the reaction during granulation of the feed, the higher the digestibility of the shrimp.
- The curing process after the pelleting section makes shrimp feed particles further gelatinize and mature, and forms a protective film on the surface to improve its palatability, water resistance and digestion and absorption of shrimp.
- The diameter of the shrimp feed pellet is generally 1-3mm, because the size is relatively small, the screening section needs to use a high square plansifter for the screening of the final shrimp feed pellets.
- In addition, the production of 0.6-0.8mm pellets will use a crumbler, the shrimp feed pellet crumbler has the finer lines.
Complete Shrimp Feed Production Equipment
RICHI MANUFACTURE is a manufacturer of complete feed pelleting equipment. With in-depth research on all aspects and equipment of shrimp feed production lines, we can customize and provide you with the most suitable complete shrimp feed production equipment to match your formula, helping you achieve the best return on investment.
Crusher
Pulverizes various raw materials to the appropriate particle size for pelletizing, ensuring high-quality pellet formation.
Mixer
All raw materials are mixed evenly to ensure that each feed pellet has balanced and highly consistent nutrition.
Cooler
Rapidly reduce the temperature of the finished particles, thereby improving their hardness, durability and wear resistance.
Screening
Separates formed pellets from unformed feed particles and recovers fines, ensuring the overall quality of the feed pellets.
Spraying
Uniformly applies various oils, palatability enhancers, functional additives, vitamins, minerals, and other coatings.
Packing Scale
Automatically packages finished pellets according to specific specifications, facilitating convenient storage and transportation.
FREQUENTLY ASKED QUESTIONS ABOUT SHRIMP FEED MACHINE
What are the differences between shrimp feed pellet mills and ordinary livestock feed pellet mills?
Ordinary livestock feed pellet mills focus more on production efficiency, while shrimp feed pellet mills, in addition to output, need to address key issues such as “small pellet size, sinking ability, and stability in water.”
How to Choose Between Single-Layer and Multi-Layer Conditioners?
Shrimp feed has high requirements for sinking properties and water resistance; therefore, three-layer conditioners are typically chosen for shrimp feed production.
Shrimp feed usually contains various ingredients such as fishmeal, soybean meal, wheat flour, and oil. To improve the water resistance of the pellets, the ingredients need to be thoroughly mixed with steam and moisture. Multi-layer conditioners allow the materials to remain in the equipment for a longer time, resulting in more uniform mixing of steam, moisture, and ingredients. This improves the maturation effect of the ingredients and also helps improve the pellet forming quality and water stability.
It is important to note that choosing a conditioner should not be based solely on the assumption that “more layers are better.” The choice must be determined in conjunction with the actual formula, production capacity, and product requirements. Richi has a professional team to provide design solutions to help you achieve the best return on investment.
How Does a Shrimp Feed Pellet Machine Produce Pellets of Different Sizes?
The main method for producing shrimp feed of different sizes is to change the ring die with different aperture sizes.
Besides the die aperture, the final particle size is also affected by the fineness of the raw material grinding, the die aperture and compression ratio, the pressure of the pressure rollers, the cutter position, the pelleting speed, and subsequent screening.
For example, even when producing shrimp feed pellets of about 1 mm, if the raw material is not ground finely enough, the pellets will be unstable in shape. Therefore, adjusting the particle size is not simply a matter of changing the die; it requires adjusting both equipment parameters and the production process.
For factories that need to produce shrimp feed of various sizes, multiple sets of dies with different apertures can be prepared and replaced as needed.
The Richi technical team has extensive experience with Prawn feed making machine projects and can quickly solve related problems in producing shrimp feed of different sizes.
How to ensure the water stability of shrimp feed pellets?
Shrimp eat relatively slowly, so the feed should not disperse immediately after being placed in the water. If the pellets quickly turn to powder, it will not only waste feed but may also pollute the water.
The water stability of shrimp feed is usually related to the following aspects:
First, the raw material must be ground finely enough. The more uniform the raw material particles, the better they bind during pelleting. If there are many coarse particles in the raw material, the finished product will more easily disperse from the inside when it enters the water.
Second, sufficient conditioning is crucial. Before entering the pelleting chamber, the raw material needs to be thoroughly mixed with steam and water in the conditioner. Insufficient conditioning will result in loose binding between the raw materials; excessive conditioning may also affect normal pelleting. Therefore, moisture and temperature need to be properly controlled according to the formula.
Third, the formula is also very important. Some raw materials have good binding properties, such as wheat flour. A proper formula can help improve pellet strength and water resistance.
Fourth, the ring die parameters need to be matched. The ring die aperture, compression ratio, and pressure roller pressure all affect the compactness of the pellets. If the extrusion pressure is insufficient, the pellets are prone to loosening; if the parameters are unreasonable, it may also affect the output and equipment operation.
Why does floating material occur when producing shrimp feed in a pellet mill?
Shrimp feed is usually mainly composed of sinking pellets. If some pellets float during production, it is first necessary to determine whether it is an occasional small number of floating pellets or if there is significant floating material throughout the entire batch.
One common cause is the presence of excessive air within the pellets. If the raw materials are not mixed evenly, or the material structure is not dense enough during pelleting, air may remain inside the pellets, leading to a decrease in density in some pellets.
Additionally, the following situations can also cause floating material:
- Unstable moisture content or conditioning effect of raw materials
- Insufficiently uniform raw material grinding
- Excessive oil added to the formula
- Loose internal structure of the pellets
- Insufficient pelleting pressure
- Inappropriate subsequent cooling rate or method
Therefore, the appearance of floating material should not be immediately attributed to a problem with the pellet mill. It is usually necessary to check each stage step by step: formula, grinding, conditioning, pelleting, and cooling.
If you need help troubleshooting equipment problems and optimizing your production formula, please feel free to consult with our experts.
What causes uneven surface on the pellets during pelleting?
Uneven surface on shrimp feed pellets usually indicates that the raw materials, conditioning, or pelleting parameters are not optimally matched.
As mentioned earlier, the most common cause is insufficiently fine grinding of the raw materials or uneven particle size.
Shrimp feed pellets are relatively small. If there are larger particles in the raw material, they can easily affect the pelleting process when passing through the ring die. The final pellets may appear rough, with small particles protruding, or even have localized cracks.
The second reason is insufficient conditioning. If steam, moisture, and raw materials are not fully mixed, some materials will be too dry while others are too wet, leading to uneven pellet surfaces during pelleting.
Additionally, it’s necessary to check for wear or blockage of the ring die, whether the pressure roller pressure is appropriate, whether the gap between the ring die and the pressure roller is normal, whether the moisture content of the raw material is stable, whether the amount of oil added in the formula is too high, and whether the cutter is properly adjusted.
In short, uneven pellet surfaces are usually not caused by a single reason, but rather by instability in some part of the production system.
other AQUATIC FEED PELLET MachineS
RICHI has over ten years of experience in manufacturing aquatic feed machinery and designing and building aquatic feed production lines. In addition to shrimp feed projects, we also provide other complete aquatic feed equipment solutions, including pellet mills suitable for producing feed for sinking fish, floating fish, crabs, turtles, and other aquatic animals.
