In the production of feed machinery pelleting, the control of moisture will directly affect the quality of feed pellets and the operation status of the equipment. Generally, before the formula is put into feed machinery production, the theoretical moisture of the finished product can be estimated according to the detected moisture of the raw materials used. If the theoretical moisture of the finished product is low, it may cause the moisture of the finished product to be substandard.
In this case, even if the process parameters of the feed machinery are adjusted later, the effect is not obvious. It can be adjusted by adding high-moisture raw materials. Next, we will analyze the problem in this regard, hoping to help everyone. For example, when the moisture content of the powder after the feed is mixed is less than 12.5%, it can be considered to add water to the mixer.
In the process of adding water to the feed mechanical mixer, mainly pay attention to the following problems: 1. The atomized water must be added, and the amount added should not exceed 2% of the material (the actual water retention rate is estimated to be no more than 50%), otherwise it is easy to mold; 2 , Add liquid antifungal agent, but it has a certain impact on palatability; 3. Pay attention to the residual situation in the mixer and finished product sieve, and clean it regularly.
Secondly, water can also be added in the conditioning stage, that is, adding water through the conditioner of the feed machinery. For example, by spraying 1%-1.5% of hot water at 95-100°C at the inlet of the conditioner, the moisture content of the finished product can be increased by 0.4-0.6%. At present, there are similar molded products on the market: water replenishment flasher. Compared with adding water to a mixer, this method should be more advantageous in controlling mildew.
In general, in the production of feed machinery, the control and regulation of moisture is a relatively complex process. Including the purchase and storage of raw materials, production and processing to the storage of finished products, it is necessary to establish moisture control points in each link. Therefore, in order to obtain the ideal moisture content of the finished product, the key is to monitor the various control points of moisture and select the correct improvement method.
When using feed machinery to prepare different feed pellets, the appropriate compression ratio should also be reasonably selected according to their different raw materials. For example, the compression ratio between 8-12.5 should be selected for the compound feed with high grain content, the compression ratio between 5-8 should be selected for the heat-sensitive feed and urea feed, and the compression ratio between 5-11 should be selected for the concentrated feed containing high natural protein. compression ratio, etc.
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