The entire process of cow dung from fermentation to pelletization

Ferment and decompose cow dung:

Simply put, it is to collect cow dung and cow urine, add hay and decaying silage to make compost, and let it ferment. In the fermentation process, a dumper is used to fully ferment the cow dung. This can only be achieved by turning the dump in a timely and uniform manner. Otherwise, some places are very dry and some places are very wet, which will affect the quality and effect of fermentation.

Cow dung fermentation method:

  1. Dilute the strain: add corn flour or grain bran or wheat bran in a ratio of 1:10, so that the organic fertilizer starter and corn flour (or bran, rice husk, wheat bran, etc.) are fully stirred evenly.
  2. Adding auxiliary materials: adding 10%-15% of the total fermented cow dung to the fresh cow dung, including straw, rice sugar and other auxiliary materials to adjust the moisture, aeration, and carbon-nitrogen ratio. The carbon-nitrogen ratio is 30-40 In the meantime, the water star of cow dung should be controlled at about 60%, subject to the watermark between the fingers but not dripping.
  3. Inoculation of bacterial powder: fully stir the stirred bacterial powder and the material with adjusted moisture evenly. This step must be done fine to facilitate better fermentation of the material.
  4. Stacking: stack the materials into 80~120cm high and within 1.5 meters wide. The length can be flexibly designed according to the amount of materials.
  5. Turn the pile, according to the local temperature, the general material will increase by about 5~10 degrees every day. When the temperature reaches about 60℃, turn the pile, break the big pieces and adjust the moisture of the part to between 50-60%, and re-pile heap. After three to four days, the temperature rises to above 50°C again, and the pile is turned again. After another three or four days, the temperature reaches 60°C and let it stand. When the temperature drops to ambient temperature, the pile is piled up and then decomposed. Generally, the pile is turned over three times. The decomposing was completed in about 15 days, and the organic fertilizer was successfully fermented.

Ingredients crushed and mixed:

Use the batching bin to crush, proportion and mix the composted materials, N, P, K and other inorganic fertilizers and other additives and other raw materials in a certain proportion through a material pulverizer and a horizontal mixer. The function of this system is to crush, mix and mix the composted materials, NPK inorganic fertilizers and other additives in a certain proportion. Based on many years of experience, the equipment matching recommendations are as follows: Use a vertical crusher to crush The cow dung compost is not easy to stick to the wall and is not easy to block; the continuous automatic batching system is suitable for the dynamic metering and batching control of organic fertilizer raw materials; the mixing operation is equipped with a double-shaft continuous mixer, which has good sealing performance, and the sticky and wet materials are not easy to be at the root of the mixing shaft Stick.

 

New organic fertilizer granulator:

Organic fertilizer granulation:

A new type of organic fertilizer granulator is used to granulate the material. The function of this system is to make granules from the materials after the crushed ingredients are mixed. A flat die granulator is suitable for granulation. Its advantages are: wide adaptability of raw materials, especially suitable for organic materials, wide requirements for raw material density and raw material moisture, raw materials do not need to be dried; large diameter of the pressure roller, the template can be double-sided Used, the materials are evenly distributed in the compression chamber, the granulation is stable, the granule forming rate is high, the appearance of the finished granules is uniform and not easy to be broken; the whole granulation and molding process does not add water, which saves the cost of subsequent granule drying; the fineness of raw materials is not high. The granulating raw materials (after composting) generally do not need to be finely crushed, and the fine stones can be crushed directly, and it is not easy to block the die hole of the platen.

Screening and material return system:

The granules output from the granulation forming system have certain differences in particle size and need to be sieved and classified. The selected rotary screening machine requires low vibration, low noise, convenient screen change, and is equipped with a screen surface cleaning device. It is recommended to be equipped with an automatic return system, and the screening is not suitable

The large and small granular materials are conveyed by the belt elevator, and then sent to the granulator to continue granulation after being crushed again, which helps to improve the continuous operation capacity of the production line.

Finished organic fertilizer packaging:

Finished product:

  1. Drying: Use an organic fertilizer dryer to further remove water from the sieved particles to meet the standard requirements of organic fertilizer moisture content.
  2. Cooling: Use a cooler to cool the granular material, which helps granule storage and quality assurance. The hot granular material output from the dryer enters the countercurrent cooler from above, and the dry air flows from the lower part of the cooler under the action of the cooling fan. Enter, and carry out sufficient cold and heat exchange with the hot and humid particles from the upper tribe. After cooling, the difference between the particle temperature and the ambient temperature is less than 5℃.
  3. Packing: The cooled granular materials are transported into the finished product warehouse through the bucket elevator. Granular materials can be quantitatively weighed and packaged through automatic packaging scales. The above is the whole process of cow dung from fermentation to pelletization. If you have any other doubts, please feel free to contact us.