What Should I Do If The Finished Product Produced By The Extruded Pellet Equipment Does Not Meet The Standards?

 

 

1. Raw material pretreatment stage: Uneven particle size of raw materials (e.g., some corn and soybean meal particles are still larger than 20 mesh), or unbalanced moisture content (below 12% or above 16%). If the particle size is coarse, it is difficult for the raw materials to fully contact the conditioning steam during mixing, resulting in uneven starch maturation during puffing and easily leading to locally overly hard granules. If the moisture content of the raw materials is too low, the material will lack viscosity after conditioning, resulting in a loose granule structure and low hardness during molding. If the moisture content is too high, the material will easily adhere to the screw or ring die of the puffing machine, making the finished product prone to deformation and large fluctuations in hardness.

 

2. Conditioning stage: Unstable steam pressure (below 0.3MPa or above 0.6MPa), insufficient conditioning time (less than 30 seconds), or excessively high steam moisture content. When the steam pressure is low, the material is not heated sufficiently, resulting in insufficient starch maturation (below 70%) and low granule hardness. Excessive pressure leads to localized overheating and over-maturation, causing the finished product to harden easily. Short conditioning time or steam carrying water can cause uneven conditioning, resulting in a mixture of soft and hard granules.

 

3. Extrusion and Forming Stage: Abnormal screw speed of the extruder (below 300 r/min or above 500 r/min), improper selection of the ring die diameter (e.g., using a 5mm ring die to produce 3mm granules), or excessive gap between the pressure roller and the ring die (exceeding 0.3mm). Too low a screw speed results in a longer residence time of the material in the extrusion chamber, leading to excessive extrusion and overly hard granules. Too high a speed results in rapid material extrusion, insufficient forming, and low hardness. A mismatch between the ring die diameter and the target granule size, or a large gap between the pressure rollers, prevents sufficient material compaction, all of which can cause hardness issues.

 

4. Drying and cooling process: Excessive drying temperature (above 80℃) and insufficient cooling time (below 5 minutes). Excessive drying temperature will cause the internal moisture of the granules to be lost rapidly, the surface to shrink excessively and become hard; incomplete cooling will leave residual heat inside the granules, making them prone to absorbing moisture and softening during storage, and resulting in poor hardness stability.

 

 

 

Final product display

 

 

 

MIKIM is a high-tech enterprise integrating R&D, production, and sales. Its feed extrusion equipment utilizes a high-temperature, high-pressure process, which sterilizes, improves puffing density and digestibility, and saves 8%-15% on feed costs. Pellet diameters are adjustable from 1-16 mm, and it features controllable cutting and floating adjustment to suit the needs of fish, shrimp, crab, and pet food. Core components are sourced from international brands and undergo special treatment, ensuring stability and durability while balancing safety, efficiency, and peace of mind.

 

Qualifications and Honors

 

 

Customer visit

 

 

 

 

1. What is the price of the fish feed mill?

The price ranges from approximately $4,000-$15,000

2. Do you provide maintenance services for your customers?
Yes, we offer comprehensive after-sales maintenance services to our customers.

 

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