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Factors causing low output of extruder's different materials expanding

2019-12-25 Back to List

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Feed extruder is the machinery used to produce extruded petfood, (floating) extruded aquatic feeds and extruded animal feeds.

The extrusion cooking process, because it causes a high level of gelatinisation of starches, results in feeds with good water stability. It can produce 'expanded' floating feeds as well as sinking pellets. The process also improves the digestibility of the product. However, extrusion cookers are usually very large and expensive to purchase and operate.

Feed extruder

Feeds which have ingredients such as soybean meal and cereal grains can be made more digestable, and the nutrients are therefore more available. Floating feeds are made using extruders along with highly water-stable sinking feeds which can be made with extruders as well. In some cases, extruders are used just to prepare feed materials, such as dry extrusion of soybeans.

1. Low output of extruded soybean

The screw head is worn out.

The bushing of extrusion chamber is worn out.

The pressure ring and wear ring are worn out. At this time, the wear-out parts should be replaced in time. Large wear-out pressure ring can be used as small pressure ring.

Customers want to obtain extruded soybean products with low urease activity.

The crushing fineness of soybean is too coarse.

Triangular belt tension is relatively loose, it should be checked in time. If the belt has aged, the whole set of belt should be replaced together.

If the steam quality of conditioner is poor, the steam quality should be checked in time and the drainage system of steam pipeline should be checked.

2. Low output of extruded corn

The screw head is worn out.

The extrusion chamber is worn out.

The pressure ring and wear ring are worn out.

Customers want to get low bulk density extruded corn products.

Corn crushing fineness is too coarse.

Triangular belt tension is relatively loose.

Steam quality of conditioner is poor.

Corn quality. Excessive drying causes that it is difficult for the corn after first maturing to produce 380 g/l of extruded corn.

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