Fermentation of livestock manure to produce organic fertilizer, turning waste into treasure, is a useful rationale for low cost and high income, effectively avoiding environmental pollution and fully utilizing the nutrients in the manure. The sown area of crops in China is more than 133 million hm2, and the annual demand for chemical fertilizer is about 140 million tons, while the domestic fertilizer is less than 100 million tons. This brings a very large environmental trend to the application of organic fertilizers, and organic fertilizer machine manufacturers emerge as the times require.
At present, the technical process of producing organic fertilizer from livestock and poultry breeding waste mainly includes granulation after fermentation to make granular products, powder products after fermentation, and the addition of microbial agents to make bio-organic fertilizers. Among them, the more mainstream process is granulation after fermentation. First of all, common granulators include roller extrusion granulator, disc granulator machine, tooth stirring granulator, and rotary drum granulator. The state of the granules produced by the machine is different, and the fertilizer granulator machine price varies. The variety of the granulator can be determined according to the selection of raw materials. The following focuses on the post-fermentation granulation process and precautions.
After the material is processed into granules by the organic fertilizer granulator, the aged peel is sent to the dryer, and the hot air is used for downstream drying. During the screening process, the fine powder with a particle size of less than 1 mm is directly screened out and sent back to re-granulation through the return belt; The return belt is sent back to re-granulation; the standard particles with a particle size between 1 and 4.75 mm are transported to the cooler, and the air is used to countercurrently dissipate heat. Go to the finished product hopper for packaging.
