How to get NPK granules coated?

Processing sulfur coated urea in 15 t / h NPK fertilizer production line
Sulfur coated urea is a kind of coated slow release nitrogen fertilizer. In the process of NPK fertilizer production line, spherical urea is coated with a layer of molten sulfur to improve the physical properties of urea.

Sulfur coated urea is increasing in agricultural applications. With the increase of high concentration fertilizer application rate, the application amount of sulfur-containing super phosphate was relatively reduced, and the crop yield increased. The amount of desulfurization in soil increases, and the area of sulfur deficient land is expanding at home and abroad.

Therefore, the application of sulfur coated urea can not only improve the utilization rate of nitrogen, but also supplement the sulfur in soil.

Fertilizer Drying Machine for Chicken Manure
Fertilizer Drying Machine for Chicken Manure

Sulfur urea fertilizer production line equipment

Zhengzhou SX Heavy Industry Technology Co., Ltd. produces various NPK fertilizer production lines, organic fertilizer production lines and fertilizer granulation production lines. As shown in the figure, our plant specially designed a 15 t / h sulfur coated urea fertilizer production line. Sulfur urea production line equipment: 1 loader feeding hopper, 3 large angle belt conveyors, 1 rotary drum heater, 1 coating machine, 2 rotary drum powder machines and 1 fertilizer packaging machine for npk.

Processing technology of sulfur coated urea in NPK fertilizer production line

Urea particles are heated by a heater and then coated with a sulfur-containing outer film. After urea coating, it is sent to powder machine by large angle belt conveyor. The powder machine sprays particles to seal the cracks of the coating and reduce the biodegradation of the sulfur coating. Two series of machines are used to ensure the quality of fertilizer. The coating of NPK fertilizer production line on the outer layer of urea ensures the slow release of fertilizer efficiency.

The outer envelope provides a physical barrier for urea, so that urea is slowly permeated by water and decomposed by microorganism. In the soil environment, urea gradually diffuses through the envelope, and releases nutrients slowly through the envelope cracks and the structure formed naturally on the envelope surface.

How to make organic compost fertilizer at industrial scale?

Composting process is to reduce moisture and decomposition odor through decomposition and fermentation, so that manure can be used. Organic fertilizer equipment for composting livestock manure, not only can eliminate odor, but also can be used in agricultural production, provide nutrients for crops, and greatly improve crop income.

Compost fermentation, temperature rise, make it harmless. The feces of livestock and poultry contain pathogenic bacteria, parasite eggs and weed seeds. Compost is treated by organic fertilizer equipment system, and harmful substances are destroyed by the rise of fermentation temperature. During the composting process, the temperature of the fermentation product continuously rises to 70 ┬░ C, which is enough to kill pathogens and parasites.

Compost fermentation requires oxygen for microbial activities. We can use composting turning machines with organic composting equipment to mix materials, increase material air and increase the gap between fermented materials.

Composting turning machine

Composting turning machine for organic fertilizer processing
Composting turning machine can handle open and close compost and mix compost at the same time, which solves the problem of raw material treatment and has complete functions. The composting truck runs on the track, which improves the flexibility of the machine, improves the transmission efficiency of the machine, and saves the operation cost. The material was processed by composting truck, which shortened the fermentation time.

Powder organic fertilizer equipment

The organic matter content of compost is high, so it can be used as fertilizer to supplement the nutrients of crops. Just by treating these composts, organic fertilizer equipment can be used in farmland. The composting process of organic fertilizer equipment is very simple, mainly screening and crushing process. The compost is sent to the hopper, and the screening material of drum screen is crushed by the chain crusher, which is the finished composting product.

How to appy bio fertilizer products?

The application of organic fertilizer can improve the soil structure, but its effective nutrient content is low and the fertilizer efficiency is slow. Biological fertilizer can enhance soil fertility, stress resistance and disease resistance, but the biological fertilizer itself does not contain nutrients.

According to the advantages and disadvantages of chemical fertilizer, traditional organic fertilizer and biological fertilizer. Zhengzhou SX chemical fertilizer plant has developed a new type of compound biological fertilizer, which has the functions of biological bacteria activating soil and transforming soil nutrients. We also designed the production method of biological fertilizer.

Benefits of applying biological fertilizer

Biological fertilizer has the characteristics of organic fertilization, soil improvement and rapid effect of inorganic nutrients, which can improve crop quality.

2. Biological fertilizer can increase the nutrient content of nitrogen, organic matter, soluble phosphorus and soluble potassium in soil, increase the number and quantity of beneficial microorganisms in soil, and enhance the function of disease resistance, drought resistance and metabolism of crops.

3. Biological fertilizer has a positive effect on increasing crop yield, improving crop quality and increasing agricultural economic income.

Production technology of pellet bio fertilizer

Due to the advantages of powder fertilizer, such as convenient agglomeration, uneven volume, unfavorable mechanized application, inconvenient transportation and storage, and serious use of biological fertilizer, granulation of biological fertilizer is an urgent need in actual production. The pan type fertilizer granulator is more suitable for the production of biological fertilizer.

Production of biological fertilizer with Pan fertilizer granulator

The effects of production formula, grinding fineness and water content of powdered fertilizer on granulation effect of compound biological fertilizer were studied. The fermented organic fertilizer was crushed and screened, and then mixed evenly with a certain proportion of inorganic fertilizer, and granulated by a pan fertilizer granulator. The pan type fertilizer granulator is equipped with spraying device, which can evenly add water to the material. In the process of biological fertilizer production, granulation is carried out according to the appropriate parameters, so as to improve the production efficiency.

Biological fertilizer granules are dried and screened to obtain the fertilizer we need.

Want to know how to make bio fertilizer products, welcome go to https://organicfertilizerplants.com/bio-organic-fertilizer-production/

How to make granules fertilizer with pan granulation machine?

Organic-inorganic compound fertilizer is a compound fertilizer that integrates organic matter and inorganic fertilizer. Organic-inorganic compound fertilizer has various components, which can not only provide crop nutrients, but also improve soil biological activity and soil fertility, so it is widely used in cash crops.

Organic matter is an important component in organic-inorganic compound fertilizer, and its content directly determines the actual effect of bio-organic compound fertilizer. Therefore, the granulation process of organic-inorganic compound fertilizer production line is particularly important. The organic fertilizer disc granulation production line can realize the complete treatment of organic-inorganic compound fertilizer.

For the pan granulator, the addition of organic matter is also the key to granulation. Want to know how does the granulator make fertilizer granules by wet granulation method, welcome to https://www.fertilizermachinesale.com/pan-granulation-process/

Disc Pelletizer for Small Scale Cow Farm Manure Granualtion
According to the actual situation, several kinds of materials with abundant raw materials, low price and convenient processing can be selected as the raw materials of the pan granulator.

Organic fertilizer: chicken manure, pig manure, peat, plant ash, etc.
Inorganic fertilizers: urea, ammonium sulfate, superphosphate, calcium magnesium phosphate, potassium sulfate, potassium chloride, etc.

Organic compound fertilizer disc granulator

Organic fertilizer has strong water absorption and looseness, and its water content, fineness and other factors have a greater impact on granulation. Therefore, organic matter plays an important role in the production of disc granulators. On the premise of keeping the compound fertilizer and other inorganic nutrients unchanged, increasing the input of organic matter is an important way to improve the quality of biological compound fertilizer.

However, organic matter has strong dispersibility and has a greater impact on granulation. The organic content is too high, which is not conducive to the production of the pan granulator.

Experiments show that in the production line of organic fertilizer disc granulation, the amount of organic matter is about 25%-35%, and a better granulation effect can be obtained. The process of organic fertilizer disc granulation production line is suitable for the production of granular organic-inorganic compound fertilizer.

How to make bio fertilizer more efficient?

Biological fertilizer production equipment is mainly used for granulation processing of compound fertilizer, biological bacterial fertilizer, clay, crop straw, biogas residue, organic fertilizer of body acid, animal manure, rice husk, household garbage and various crude fibers.

Bio organic fertilizer can improve soil ecological environment and soil microbial community, and play a greater role in reducing crop diseases and insect pests. Biological fertilizer production equipment is widely used in agriculture.

In the production of biological fertilizer applicator, the flat mold granulator is commonly used as granulation equipment. The granulator has low material requirement and high granulation rate. Maintenance is an important method to avoid abnormality in the production of biological fertilizer device.

1. When storing the granulator, the dust should be removed and the chassis plane of the mobile device should be kept clean in time. In order to avoid the product can not be damaged by material, the movable bearing can not move smoothly on the chassis, which will lead to serious accidents.

2. Good lubricating oil is of great help to bearing life, so operators should ensure that the lubricating oil injected is as clean and well sealed as possible.
In the process of fertilizer granulator, if the load current of main motor is too small, the possible reasons for operating current less than 60% are as follows:

1. The feed rate is too low, and the granulator does not meet the pressure range required for granulation.
2. The content of urea nitrogen in raw materials is too high. The flat die extruder extrudes the material into a strip and cannot round the particles.
3. Due to the high moisture content of raw materials, the fertilizer granulator can not extrude the granules out of long strips and throw them into the round granules.

Solution: adjust raw material moisture or formula, adjust feed rate.
Flat die extruder granulator
If the current fluctuation of the pelletizing load is too large to exceed the rated current value during the operation of the flat die extruder, the possible reasons are as follows:

1. The impurity of material is too thick and the mould hole is blocked too much, which leads to the high pressure in the granulation area.
2. The content of crude fiber is too high. Water content is too low or uneven, extrusion pressure is too high, temperature is too high.
Solution: adjust the moisture or formula of raw materials, select raw materials, remove impurities, and then granulation, remove abrasive tools of the granulator, and clean the impurities inside.

Bio Fertilizer Production Process Cost

Compared with common organic fertilizer, bio organic fertilizer has more advantages in efficacy and mechanism. The continuous update of biological fertilizer production technology and granulation equipment also promotes the continuous improvement of new fertilizers, thus effectively improving the soil environment, improving soil fertility and reducing diseases and insect pests. The following is a brief introduction of the new fertilizer granulator.

Compost Making
Compost Making

In the production process of granular biological fertilizer, fertilizer granulator is one of the most important equipment. The quality and output of granulator are closely related to the reasonable selection of granulator. Since fertilizer is sold in granules, it needs a good appearance for easy use; the yield of fertilizer is directly related to the production cost. From the perspective of enterprises themselves, they naturally hope to get the maximum benefit with the lowest cost.


There are many kinds of granulation equipment of biological fertilizer applicator, from the traditional  pan granulator and rotary drum granulator to the improved combined granulator of our company. Every renewal and development is to meet the requirements of new fertilizer development.

Various granulators are not only more and more suitable for materials, but also meet the granulation requirements of various materials, greatly improving the quality and output of particles. Our combined granulator (organic fertilizer and compound fertilizer granulator) is a combination of drum granulator and cascade granulator, which has higher production efficiency and lower material requirements.

Granulator for organic fertilizer and compound fertilizer

There are many kinds of granulation equipment in the production process of biological fertilizer agent. Customers can choose and purchase them according to their own granulation needs. Due to the different principle of each model, the production cost consumed is also very different. The price of fertilizer granulator ranges from thousands to tens of thousands of yuan. If you want to know more about each equipment, please contact us, we will provide you with the most satisfactory service and the most favorable price.