Efficiently processes high-fiber raw materials, expanding the range of low-cost raw materials. Traditional feed processing equipment and single-screw extruders have limited capacity for processing high-fiber raw materials (such as brewer's grains, corn germ meal, and wheat bran), easily leading to problems such as material jamming, insufficient processing, and poor feed formation, making it difficult to utilize these low-cost by-products in large quantities. Twin-screw feed extruders, with their strong shearing and extrusion action, can break down and soften the fiber structure. Simultaneously, the high temperature and pressure promote the full combination of fiber with starch and protein, improving feed formability and digestibility. For example, adding 20%-30% brewer's grains (fiber content ≥25%) to the feed formulation can still produce feed with stable structure and good palatability, while single-screw equipment encounters difficulties in forming feed when adding more than 10%. This advantage allows feed mills to utilize industrial by-products to replace high-priced raw materials, significantly reducing raw material costs while achieving resource recycling.
Adaptable to high-protein and heat-sensitive raw materials, ensuring nutrition and quality. The twin-screw pet feed extruder machine offers significant advantages in processing high-protein raw materials (such as fishmeal, soybean meal, and meat and bone meal). By precisely controlling temperature and pressure, it ensures sufficient protein denaturation while avoiding nutrient loss due to over-processing. For example, when processing aquatic feed with a fishmeal content ≥30%, the twin-screw extruder can control the temperature at 140-150℃ and the pressure at 4-5MPa, breaking down anti-nutritional factors in fishmeal while maintaining protein activity and enhancing the feed's nutritional value. For heat-sensitive raw materials such as vitamins and enzymes, the twin-screw extruder can reduce the damage to heat-sensitive components through a "post-addition" mode and precise temperature control, increasing the retention rate of heat-sensitive components to over 85%. Furthermore, the twin-screw extruder can also process high-moisture raw materials (14%-15%). By adjusting the feed speed and temperature parameters, it prevents raw material sticking, eliminating the need for additional drying and saving pre-treatment costs.
It offers high flexibility in raw material formulation, optimizing formula diversity. The twin-screw pet pellet making machine is less affected by changes in raw material ratios, allowing for flexible adjustments to the proportions of different ingredients and diversified formulations. For example, the ratio of corn, soybean meal, and by-products can be adjusted based on fluctuations in raw material market prices, minimizing costs while ensuring feed quality. It can also adjust the ratio of protein, starch, and oil to meet different livestock needs, producing high-protein, low-starch premium feeds, or high-starch, economical feeds. This formulation flexibility allows feed mills to quickly respond to changes in market demand and enhance product competitiveness. Furthermore, the twin-screw extruder has relatively relaxed requirements on raw material particle size; some raw materials can have their grinding precision appropriately reduced, decreasing energy consumption and time in the pre-treatment stage, further improving production efficiency.
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