The composted cow dung has achieved harmlessness and stabilization treatment, and has reached the basic conditions for the utilization of organic fertilizer resources, but it has not yet reached the level of commercialization and sales in the market, and its application effect and scope of use are still limited, so It is necessary to further process the compost material into powdered or granular organic fertilizers and organic-inorganic compound fertilizers with commercial properties through subsequent
There are big differences in the production and application of organic fertilizers at home and abroad, and the selection of organic fertilizer machine
is also somewhat different. A common practice abroad is to use a dedicated spreader to directly spread the compost to the planting plots. The reason is that the farm is attached with a composting site and a large area of planting land, which can realize a small-scale self-circulation of planting materials. my country’s national conditions are different. Most of the composting plants are operated independently and do not have their own planting plots, and some are independent of dairy farms. The product sales radius often ranges from tens to hundreds of kilometers, and some are even more. This requires that organic fertilizer products have the characteristics of storage resistance and easy transportation, and meet the requirements of market commodity circulation storage and transportation.
Since the overall nutrients of the compost product are low, it can only be used as a part of the base fertilizer, which is different from the existing agronomic planting habits and the characteristics of crop fertilizer requirements. Therefore, it is necessary to add a part of phosphorus and potassium fertilizer to the organic fertilizer to make organic-inorganic compound fertilizer. The organic fertilizer equipment used in the process of fertilizer granulation is a NPK and organic fertilizer granulator
Organic-inorganic compound fertilizer has dual characteristics, that is, it has the characteristics of long-term organic fertilizer, improving the soil and activating the organic nutrients in the soil. It also has the characteristics of high nutrient content and fast fertilizer efficiency of inorganic fertilizer. The advantages complement each other, which makes up for their respective shortcomings and achieves fast-acting fertilizers. One with long-lasting effect. Organic fertilizer products can be supported in granular form or made into powder form, depending on market demand. In order to balance nutrients and be suitable for transportation and storage, it is recommended to process organic fertilizer into granular products. The particle shapes are cylindrical or spherical.
The requirements for the moisture content of the finished particles are as follows: organic fertilizer is less than or equal to 20%, and organic-inorganic compound fertilizer is less than or equal to 10%. The organic fertilizer processing technology mainly includes crushing, batching, mixing, granulating, drying, cooling, sieving and packing. The production capacity of a single production line equipment is 1-10t/h. If it is too small, it will not reach the economic scale, and if it is too large, it will increase the difficulty of transportation and storage of raw materials and finished products. Sometimes, in order to reduce the input, the fertilizer granulator can choose the roller press granulator
, because the minutes granulator has a long service life and low price.