Difference of feed production between single screw extruder and twin screw extruder
At present, aquatic extruder has been promoted in the field of aquatic feed. Extruded aquatic feed, as a high-end product with high feed intake rate, high conversion rate and higher environmental protection requirements, has been more and more accepted by the market.
With the further improvement of puffing technology, many manufacturers have changed the small aquatic feed processed by crushing technology into direct production by puffing machine. Moulds for the production of small aquatic feed are generally 1.2 mm, 1.0 mm and 0.8 mm, and some manufacturers even require the processing of expanded particles with a diameter of 0.6 mm... Smashing processing of small particles has the advantages of relatively convenient production and relatively low cost. However, high formula cost, large powder content, poor stability in water, return material and other shortcomings make people prefer to use expander direct production. Small granules are puffed directly by puffing machine, which has the advantages of low formula cost, low powder content, good stability in water and beautiful appearance. But the production is relatively troublesome, the processing cost is high, especially the aperture of the processing mold is large.
In practical production, there are two types: single screw extruder and twin screw extruder. Single screw extruder has the advantages of relatively simple structure, relatively low price, early development and mature technology, which is mainly used to produce low-grade bait. Twin screw extruder is a multi - screw extruder developed on the basis of single screw extruder. It has the advantages of strong adaptability, sliding transportation and self-cleaning, but the structure is complex, the investment cost is high, the corresponding maintenance and operation cost is also relatively high. It is generally used to produce high added value aquatic animals and pet bait. However, with the development of aquaculture and the improvement of the requirements for aquatic bait, twin screw extruder will be widely used.
Therefore,the choice of single screw extruder or double screw extruder to produce aquatic feed needs to be carefully considered by customers. Jinan FLD machinery co., LTD. Welcome all major customers to consult and order. Contact: Kevin, Tel :86-18660429170. Our company will wholeheartedly provide you with better prices and more reasonable product solutions.
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