Extruded pellet feed came into being after the aquaculture industry developed to a certain stage. Extruded pellet feed should not only be nutritionally balanced and water-stable, but also will not affect the quality of the water environment where aquatic animals live, so it has gained a good reputation in the market.
Due to the large variety of aquatic feeds, large changes in raw materials, high requirements for grinding fineness and poor material fluidity, the production process of aquatic extruded pellet feed has high requirements. The typical process mainly includes: receiving, cleaning, coarse grinding of raw materials, primary batching and mixing, secondary grinding, secondary mixing, conditioning and puffing, granulation and spraying, product grading and packaging and other processes.
| Model | Capacity(t/h) | Power(kw) | Screw Diameter(mm) | Weight |
| 75-B | 0.3-0.4 | 22 | 80 | 1000 |
| 85-B | 0.5-0.6 | 30 | 90 | 2000 |
| 90-B | 0.6-0.7 | 37 | 100 | 2100 |
| 100-B | 0.7-0.8 | 55 | 120 | 2200 |
| 135-B | 1-1.5 | 75 | 135 | 3200 |
The raw materials used in feed factories are mainly in the form of powder and pellets. The former does not require coarse grinding. For this kind of raw material, it can directly pass through the material pit and elevator, enter the cone cleaning screen for impurity removal, and then undergo magnetic separation, and then enter the batching bin directly through the distributor or spiral auger. The latter requires coarse grinding. The material passes through the material pit and elevator to enter the cleaning equipment for impurity removal and magnetic separation, and then enters the to-be-crushed bin. After coarse grinding, it passes through the elevator and distributor to enter the batching bin for batching. The first coarse grinding is the pre-treatment process of ultrafine grinding in aquatic feed processing. The main purpose is to reduce the particle size difference and variation range of the material, improve the working condition of the ultrafine grinder, improve the working efficiency of the ultrafine grinder, and ensure the stability of product quality.