What are the process steps in the processing of powdered organic fertilizer production line?

What are the process steps in the processing of powdered organic fertilizer production line?

During the production of powdered organic fertilizer, it mainly absorbs dust floating in the air. In the harmless treatment of livestock and poultry manure, aerobic strip-stack fermentation is generally used. That is to say, the general stacking fermentation. During the fermentation, it is necessary to pay attention to avoiding wind and rain and reducing organic matter. Therefore, before fermentation, it is necessary to build a rainproof shed and stack fermentation tanks.

The following is an introduction to the process flow:

1.The ratio of raw materials per ton: 500kg of cow dung + 300kg of pig manure + 200kg of bacteria residue + 50g of bacteria (cow dung and pig manure can also be replaced by other livestock and poultry manure) Accessories: when the humidity of livestock and poultry manure is high, you can add appropriate Straw, rice husk, cake and other materials with low water content to reduce the water content of fermentation materials.

2.Strip stacking: According to the ratio of the above raw materials, strip stacking is carried out according to the needs. There is no limit to the length of the pile, with a width of 2 meters and a height of about 1 meter. When stacking, the materials need to be stacked evenly layer by layer. According to the amount of feces processed each time, choose the appropriate width of the turner. The picture below shows the trough-type turning machine with lifting type, which can adjust the turning height and shorten the turning speed at the same time.

3.Add bacteria: expand the bacteria and bacteria residues at a ratio of 1:5 (the purpose of this is to dilute the bacteria and spread them evenly. For example, use 1kg of bacteria with 5kg of wheat bran or rice husk powder OK). Generally, 1kg of strains can ferment 10-20 tons of feces and straw. In the case of a large amount of fermentation at one time, it can be evenly mixed with the help of a double-shaft horizontal mixer, and then sprinkled on the surface of the pile according to the number of piles.

4.Turning and fermenting: Use a trough-type turning machine to turn and throw the pile. When the temperature rises above 55°C, turn the pile once every 1-2 days, and after 10-15 days of fermentation at 55°C, put away the pile. (The purpose of turning over is to evaporate water, oxygen enter the interior of the pile, bacteria enter the interior of the pile and rapidly reproduce and ferment)

5.Crushing: Fermented materials cannot be directly sold as commodities, because long-term stacking will cause agglomeration and other phenomena. At this time, the bulk materials left by the sieve need to be finely crushed by a high-humidity material crusher, and the powdery organic fertilizer can be obtained after crushing. (In the early stage of fermentation, in order to speed up the fermentation process, the auxiliary materials can be added to the pulverizer for pulverization)

6.Screening: In order to improve the appearance, the powdery organic fertilizer is re-screened to obtain uniform powdery materials before packaging. After operating according to the above steps, it will become pure powdery organic fertilizer after being sieved by a drum sieving machine.

7.Packaging: The powdered organic fertilizer can be put into storage and sold directly after being packed by an automatic packing scale.

After these 7 steps, powdered organic fertilizer can be produced. Of course, if you want to make powdered organic fertilizers that meet the standards, you need to measure the organic matter components of fermented manure and straw fertilizers, add nitrogen, phosphorus and potassium content, and also need to adjust the proportion of straw and other auxiliary materials to determine the various content formulas of organic fertilizers.