15t/h sulfur-coated urea fertilizer production process and analysis

Advantages of sulphur-coated urea fertilizer

Sulfur coated urea, also known as sulfur coated urea, sulfur coated urea, controlled-release urea, is a new type of slow-release fertilizer. Similar to NPK granular fertilizer processed by rotary drum granulator, the product has the function of slow release and controlling fertilizer effect. According to different growth stages of crops, releasing nutrients according to nutrient requirements can reduce nutrient loss, improve fertilizer utilization, save resources and protect the environment. This product is not only an ecological and green agricultural product, but also a new type of product to replace common urea in the future.
1. The empty shell of sulfur fertilizer can store water. Through the soil, it can drive away the sterilization. Sulfur fertilizer and its compounds have been successfully applied to the improvement of saline alkali soil.
2. The product can not only supply sulfur to the soil, improve the yield of crops, but also improve the quality of crops to a certain extent.
3. Applying sulphur urea once can meet the needs of each growth stage of crops, which can greatly reduce the input of labor force.

A large number of studies show that most of the effective components of conventional chemical fertilizer are lost due to the volatilization and decomposition of drenching culture, resulting in less than 50% absorption by crops, that is, the utilization rate of conventional chemical fertilizer is less than 50%. Therefore, improving the utilization rate of fertilizer is the main content of fertilizer industry research. China’s research shows that more than 10 million tons of nitrogen are lost out of the world every year due to unreasonable fertilization, with a direct economic loss of over 10 billion yuan. The economic loss caused by the pollution caused by the loss of drainage to the people’s health and the quality of agricultural products is incalculable, with an upward trend in recent years.

Production process of sulfur-coated urea fertilizer

Different from organic fertilizer manufacturing process, sulfur-coated urea is coated with sulfur uniformly on the outside of ordinary urea, and then coated with a small amount of sealant and conditioner containing trace elements on the surface of sulfur. After this product is scattered in the farmland, urea nutrients are slowly released through the sulfur shell for crop absorption and utilization, which plays a role in prolonging fertilizer utilization. Chinese Tianci factory has specially designed a fertilizer production line with an output of 15t/h to process this fertilizer, so that urea can achieve the required fertilizer efficiency.

15t/h sulfur-coated urea fertilizer production process
15t/h sulfur-coated urea fertilizer production process

For general agricultural producers, in order to increase crop yields, the amount of fertilization must be increased accordingly, but when the fertilization reaches a high enough, and resources and the environment does not allow, it should seek to reduce the amount of fertilizer, through the use of new fertilizers. The new fertilizer formula can fully achieve the purpose of increasing production. The compound fertilizer granules and sulfur-coated urea fertilizer made by NPK fertilizer granulator are welcomed by the market.

Detailed analysis of process flow of NPK fertilizer production line

The NPK compound fertilizer production line is a comprehensive and scientific compound fertilizer production flow line, which plays an extremely important role for the user’s own production demand, cost control and economic benefit improvement. Generally speaking, the NPK fertilizer production line mainly includes raw material distribution, mixing and agitation, material pulverization, granulation and discharge, primary classification, material drying, secondary grading, finished product coating and packing etc., through effective process control and material selection, Comprehensively grasping the required material targets, the production and use of compound fertilizers have achieved the desired results.

NPK fertilizer production line

Especially with the grasp, refinement and classification of the concept of ecological planting, green planting, resource utilization and recycling, the demand and demand level of the NPK compound fertilizer production line have been maximized. Moreover, as the technology continues to mature and continue to advance, the production processes of each branch are refined and subdivided. For example, for raw material ingredients, the industry generally adopts the ratio of urea, ammonium chloride, ammonium phosphate and ammonium nitrate, and is equipped according to a certain proportion, and also needs to have the conditions of the local soil itself. For example, there is also a great demand for material granulation. Before the material is fed into the fertilizer granulator machine for granulation, the material should be uniformly stirred, pulverized uniformly, and the overall shape is good, and this step is in the process of the NPK fertilizer production. It is a must and the most important part.


As a leading fertilizer machine manufacturer in China, we can produce different kinds of fertilizer granulator machine for the fertilizer manufacturing process, welcome to inquiry.

For the optimization, adjustment and upgrading of the NPK compound fertilizer production line, as well as the control and scientific management of the entire assembly line operation; it has played a positive role in saving manpower, reducing costs, long-term production and profit improvement.


The working principle of the disc granulator in the fertilizer production line

The disc granulator machine is mainly used in the NPK fertilizer production line and organic fertilizer production line to produce various granular products; it’s also used in pharmaceutical products, fertilizers, feeds, etc. Adopting the overall arc structure, the granulation rate can reach above 93%. The granulation tray has three discharge ports, which facilitates intermittent production operations, greatly reduces labor intensity and improves labor efficiency.

Disc fertilizer granulator machine working principle:
The raw meal powder is uniformly wetted by the atomized water in the mixer to form a spherical core having a uniform particle size, and then fed into a ball plate for ball formation. The moisture of the ball should be controlled at 12-14%. Most of the water should be added in the twin-shaft mixer. Only a small amount of supplementary water is added to the ball plate, and the amount of water added is controlled to be about 0 to 3%. The dry powder granulation is directly added to the ball-forming plate, and the proper amount of water is sprayed. The raw material nucleus enters the spherical disk and is subjected to centrifugal force, friction and gravity in the disk, and moves along the parabola. Due to the cohesiveness and plasticity of the material, the cores are bonded to each other and gradually grow up during the movement. When the inclination angle of the ball disc, the height of the disc edge, the rotation speed and the moisture are constant, the balls of different particle sizes roll downward from the edge of the disc at different disengagement angles due to different gravity. During the continuous rolling process, the ball continuously discharges the water in the ball out of the surface. Due to the cohesiveness of the material and the natural volatilization of the surface liquid film, the ball has certain strength, and then the disk is rotated with the tilting of the disk. The sides are discharged out of the pan.

Disc granulator performance advantages:
1. The raw materials are suitable for a wide range of applications. They can be used for granulation of various raw materials such as compound fertilizer, medicine, chemical feed, coal, metallurgy, etc., and can produce various concentrations and various types (including organic fertilizer, inorganic fertilizer, and magnetic fertilizer etc.) of compound fertilizer.
2. The disc granulator is light in weight, low in height, and flexible in process;
3. The machine has simple structure, convenient adjustment and superior performance.
4. The use of unique unpowered combination scraper integration reduces auxiliary power consumption.

5, high ball formation rate, large rounded particle strength, intuitive operation, easy maintenance and so on.

Fertilizer granulator machine is the core equipment for fertilizer manufacturing process. As one of leading fertilizer machine manufacturers in China, in addition to the disc granulator, we also produce other types of fertilizer granulator machines, and other equipment such as compost turning machines, mixer machine, crusher machine, etc.


Detailed explanation of the working principle of compound fertilizer equipment

Zhengzhou Tianci Machinery specializes in the production of compound fertilizer equipment. The following is a detailed introduction to the working process of the NPK fertilizer production line and the mechanical equipment used. Hope to help you.

fertilizer machine

The following is detailed description:
1. Selection of raw materials: According to the formula operation, add additives, trace elements, N, P, K, etc. to the mixer machine for mixing. The advantage of alternate mixing with two compound fertilizer equipment is: continuous production, improved efficiency, greatly Reduce the labor intensity of people.

2. Mixing raw materials and ingredients: mixing and pulverizing with a horizontal pulverizer unique to the compounding equipment, the pulverizer can thoroughly pulverize the added bulk materials, so that the raw materials are completely mixed.

3. Granulation: Granulation is a very important step in the NPK fertilizer production line. There are also many kinds of fertilizer granulator machine. The specific classifications are: drum granulator, disc granulator, extrusion granulator, and these three granulators are the most widely used in the NPK fertilizer production.

4. Drying the granules to increase the hardness: The granulated compound fertilizer has formed granules, but since there is still moisture and the hardness does not meet the requirements, it must be dried.

5. Cooling granules: The dried granules are transferred to a cooling machine for cooling to a normal temperature, which further increases the strength of the composite fertilizer granules and further reduces the moisture.

6. Screening: After cooling, the composite fertilizer particles will have powdery particles. The fine powder and large particles will be completely sieved out by the sieving machine. The fine powder will be directly returned to the mixer and mixed with the raw materials through the return belt conveyor, and then participate in the granulation process again. After the large particles are pulverized, the fine powder is returned to the mixer through the same return belt conveyor.

7. Packing: Packing with packaging machine. After the worker puts on the bag and triggers the switch, the packaging machine automatically completes the bag, blanks and bags. At the same time, the feeding device is automatically and automatically fed. When the weighing weight of the weighing system reaches the set value, the feeding is automatically ended, and the operator puts on a new packaging bag for the next packaging process.

Zhengzhou Tianci Machinery is one of leading fertilizer machine manufacturers in China, provides you with relevant introduction and working principle of compound fertilizer equipment. We hope to help you. The company welcomes new and old customers to visit, visit and negotiate.