Vietnam Professional 2.5 T/H Complete Line for Fish Pellet Mill

• 
• 
• 

Country: Vietnam
Capacity: 2.5 T/H
Date: March 28th,2017

For 2021, the demand for manufactured aqua feed in Vietnam amounted to approximately 7.01 million metric tons, which slightly increased compared to the previous year. The demand for manufactured aqua feed showed a gradual increase in the last three years.

Vietnam professional 2.5 t/h complete line for fish pellet mill project started in 2020. The customer’s raw materials including grains, cake meal, rice bran, bran, blood meal, fat, antibiotics, vitamins and so on. The purpose of the customer’s investment is to make a profit, so the project is currently under trial operation and is running very well.

Ordinary of aquatic feed is characterized by fine grinding fineness (hammer mill mesh size 0.8- 2.0 mm), high conditioning requirements (using double jacketed conditioners), small product particle diameter (particle diameter of about 2-4.0 mm).The single set of SZLH350 normal aquatic fish feed project was designed to produce 3t /H, using one grinding line, one batching mixing line, one pelleting line and one packaging line. The total power of the equipment is about :210KW; The construction area of the production area is about 9.5×7×16.3m (high); allocated with 0.5T boiler. The line is with compact engineering design, reasonable structure, meeting environmental protection requirements, and can be designed according to customer requirements.

2.5 T/H Floating Fish Feed Plant Manufacturing Process

(1)Raw Material Selection

Besides the nutritional value, the processing characteristics of aquatic feed raw materials should also be an important factor to be concerned about. The ideal processing characteristics of aquatic feed raw materials are not only manifested by larger output and less energy consumption in crushing, mixing or granulation, the more important point is that the final produced fish feed pellets must have good stability in water.

(2)Crushing

Crushing process can reduce raw material size to desired particle size. For even larger aquatic fish feed manufacturing factory, the crushing process adopts secondary crushing technology, that is: first normal crushing, and then fine crushing.

(3)Mixing

Mixing is one of the most important processes in 1-5tph ce high quality aquatic feed production plant. If the physical properties of feed ingredients are the same, mixing is very simple. But as a matter of fact, the physical properties of feed ingredients are varied, and the problem of mixing and separation coexist. These physical properties include: particle size, particle shape, density or specific gravity, hygroscopicity, static charge and viscosity.

(4)Conditioning (optional)

Conditioning is to add water and heat to the powdery material before making fish feed, it can: improve the digestibility and water resistance of feed, kill pathogenic bacteria. Usually this process is realized by wet type fish feed extruder, but its price is much higher. So, for ordinary fish feed production, this process is not necessary.

(5)Floating Fish Feed Pelletizing or Extruding

For making fish feed pellets, there are mainly 2 types of fish feed processing machines can be adopted: Common Feed Pellet Mill & Fish Feed Extruder,today we are talking about extruders suitable for the Ghana market.

(6)Floating Fish Feed Pellets Drying

In order to prevent mildew of fish feed, aquatic feed must have good anticorrosive property. For fish feed factories, the most economical way is to reduce feed moisture, this is realized by dryer. The 3-layer drying machine can improve drying space and efficiency, at the same time screen fish feed pellets and seprate the powder. After heating and drying, the moisture content of the product is controlled below 11.5%, plus a well sealed outer package, generally, the feed can be stored safely for a long time. This physical anticorrosion method does not change the composition of feed, change the pH value of feed, nor affect the water quality of and feed quality. It is a safe and effective method.

(7)Out-spraying

In fish or aquatic feed production, the edible oil and heat-sensitive components are usually sprayed by drum-type sprayer. When feed pellets fall, the vaporous liquid material is sprayed to them, so feed pellets can fully contact with droplets in the air. The main technical points of this external sparying technology are:

(1) make the liquid atomized as much as possible. The smaller the droplets of atomization, the more uniform the distribution of liquid in the particles. To do this, the design of the spray nozzle is very important;

(2) the weight of the particles and the liquid material match. The outside spraying process is a continuous operation process, so the water solubility of spraying liquid must be considered to avoid loss into the water.

(8)Floating Fish Feed Pellets Cooling

The fish feed pellets, after spraying liquid, are conveyed to counter-flow cooler. The counter-flow cooler has many advantages in fish feed pellets processing, such as high automation, small air volume, low power consumption and small floor area.