7 detailed process to make compound fertilizer

Process design description of NPK fertilizer production line:
1. Batch processing:
Electronic batching or disc batching.
2. Crushing process:
The mixed fertilizer proportioned according to the design requirements is sent to the raw material crusher for raw material crushing. The purpose is to crush various raw materials to a certain fineness. Basically, the particle size of raw materials is less than 1mm, which is conducive to the material in the granulator. Roll inside to meet the standard ball.

20t per hour drum granulation plant layout
20t per hour drum granulation plant layout

3. Granulation process:
The crushed mixture is conveyed to the fertilizer granulator through the conveyor. The liquid phase provided by the slurry or water in the extrusion granulator makes use of the centrifugal force brought by the rotation of the fertilizer granulator to turn the material into organic fertilizer. At present, it is better to use the disc granulator to produce organic fertilizer. The granulation rate of disc granulator can reach more than 90%, but the table output is low.
4. Drying process:
The granular materials are transported to the rotary three drum dryer through the conveyor. The hot blast stove is set at the inlet of the dryer to provide heat for the drying of materials in the dryer and evaporate the water in the formed materials into water. The steam is introduced into the dust collection chamber through the fan to remove dust. After the material enters the dryer, the liquid phase of the material is high and the ball strength is low. In order to ensure the sphericity of the material, we used it in the design of the dryer.
5. Cooling process:
The moisture content of materials after drying generally can not meet the water content requirements of organic fertilizer. Cooling in the cooler is very important for the NPK fertilizer manufacturing process.
6. Screening process:
The cooled organic fertilizer still has a certain temperature. After the organic fertilizer material enters the screening machine, the organic fertilizer material is roughly classified, and the screened fine powder is directly returned to the granulator for granulation. After screening, the screened coarse material is crushed by the return chain crusher, and then returned to the granulator for re granulation. The finished product is directly sent to the silo of the packaging scale. On the other hand, compound fertilizer materials are also used for screening projects. Cooling engineering plays a certain role in reducing temperature and preventing material caking.
7. Packaging process:
The coated finished organic fertilizer enters the silo of the packaging scale, automatically counts according to the set quantity, then puts it into the packaging bag, and then through the automatic sewing system, the sewn compound fertilizer can be stacked in the silo. Warehouse. In principle, the height of each stack shall not exceed 8 bags and the height shall not exceed 10 bags. The ground must be damp proof.

More detailed info, go to https://fertilizerproductionlines.com/npk-fertilizer-production-line/

Manure to Compost

Manure is organic matter, in addition to green manure, most of it comes from animal manure, which can be used as agricultural organic fertilizer.

Manure improves soil fertility by adding organic matter and nutrients (such as nitrogen), which are used by bacteria, fungi and other organisms in the soil. Then higher organisms feed on fungi and bacteria in the life chain of soil food web.
In the past, the term “manure” included inorganic fertilizer, but this usage is very rare now.

Animal excrement

Most animal faeces consist of faeces. Common forms of animal manure include farmyard manure (FYM) or farm mud (liquid manure). FYM also contains plant materials (usually straw), which are used as bedding for animals and absorb feces and urine.

Bio Fertilizer Production Line
Bio Fertilizer Production Line

Agricultural fertilizers in liquid form, called slurries, are produced by more intensive livestock feeding systems using concrete or slats instead of straw bedding. Different animal faeces have different quality and need different application amount when used as fertilizer.

For example, horses, cattle, pigs, sheep, chickens, turkeys, rabbits and bird droppings from seabirds and bats all have different characteristics. For example, the contents of nitrogen and potassium in sheep manure are very high, while the contents of nitrogen and potassium in pig manure are relatively low. How to make pig manure compost? Here are solutions for you: https://manurefertilizermachine.com/composting-pig-manure/

Horses mainly eat grass and some weeds, so horse manure may contain grass and weed seeds, because horses don’t digest seeds like cattle. Cow manure is a good source of nitrogen and organic carbon. The content of nitrogen and phosphate in chicken sand is very high, and it is highly praised for these two characteristics.

Animal faeces may be adulterated or contaminated with other animal products, such as wool (poor quality and other hair), feathers, blood and bones. Livestock feed may be mixed with manure due to spillage. For example, chickens are often fed meat and bone meal, an animal product that may eventually be mixed with chicken manure.

Human excrement

Some people call human excrement human excrement, others use the word “human excrement”. Like animal manure, it can be used as a soil conditioner (reusing waste in agriculture). Sewage sludge is a kind of material containing human excreta, because it is produced after sewage treatment plant mixes excreta with water and processes wastewater.


Compost is the decomposition residue of organic materials. It usually comes from plants, but usually includes some animal manure or bedding.

Advantages of organic fertilizer production line:

1. Semi wet material crusher is adopted, which has strong adaptability to water content.
2. The particle polishing machine makes the spherical particles uniform in size, smooth in surface and high in strength. Suitable for connection with various granulators.
3. Belt conveyor and other supporting equipment are used to connect the whole line.
4. Compact structure, stable performance, easy operation and maintenance.
5. The equipment can be selected according to your actual needs.

Applicable product line main products:

Semi wet crusher
Fertilizer mixer – Horizontal
Fertilizer mixer – vertical
Fertilizer dryer
Drum cooler
Rotary screen
Automatic packaging machine

More details, welcome go to https://manurefertilizermachine.com/manure-processing-machinery/