Granular bio-organic fertilizer production process:
In the process, the livestock and poultry manure, ingredients,
bacteria, etc. are sent to the mixing mixer according to the
specified ratio, which is stirred and mixed to make it uniform, and
transported to the fermentation bed (trough, strip or tank) by
conveyor or forklift. It is fully fermented in the fermentation
bed, then pulverized and loosened by a pulverizer, and then sent to
the storage yard for secondary aging to increase activity, and then
sorted to remove impurities, and then processed into biological
granular organic fertilizer through processes such as deep
processing and granulation.
Granular organic fertilizer granulation equipment
The granulation methods of the granular bio-organic fertilizer
process mainly include an agglomerate method, shotcrete method, and
extrusion method. According to the different structures of the
granulator, the agglomeration method is divided into disc
granulation and drum granulation; according to the position of the
pressure roller (or die hole), the extrusion method is divided into
roller extrusion granulation and flat die extrusion. Press
granulation and ring die extrusion granulation.
1. Disc granulation. Disc granulation is currently the most widely
used granulation method in China. The disc granulator has the
following characteristics: it has a good classification effect and
produces fewer coarse particles, so the granulation rate is greater
than 90%, but it requires high material fineness and uniformity.
2. Drum granulation. Rotary drum granulation relies on temperature
to increase the amount of liquid phase in the granulated material,
which promotes the material to be granulated at a lower water
content, which provides convenience for drying and saves energy.
The granulation rate of drum granulation is low (4%～60%), and the
amount of returned material is large.
3. Extrusion granulation. Extrusion is a volumetric compression
process, there is no temperature rise in the whole process, no
drying is required, and the work is convenient. The extrusion
granulator has a high granulation rate (close to 100%), high
granule strength, basically no material return, and a non-smooth
granule shape.
4. High-efficiency and new type of special granulating method for
organic fertilizer. The granulation equipment was developed in
recent years, mainly for the pelletizing and granulation of organic
materials. The advantage of the process is to break through the
lack of shape and hardness of the organic matter after granulation.
The organic matter that needs to be granulated after fermentation
does not need to be dried, and no binders are needed to directly
produce spherical particles with a certain solidity and beautiful
appearance. There is no special effect on organic matter. Upon
request, spherical organic granular fertilizer can be produced. It
can be fermented chicken manure, pig manure, cow manure, rice
straw, various dregs, agricultural and urban organic solid waste,
etc., and can also add N, P, K to make organic-inorganic compound
fertilizer as required. It is the ideal equipment for granulating
organic fertilizer.
