How to make npk by dry granulation method?

NPK Dry Granulation Technology

Dry granulation is a low-cost fertilizer processing technology, not wet manufacturing. In the manufacture of NPK fertilizer, the dry powder particles are directly rolled into the other one, leading to the formation of chemicals.

How to make npk granules?

This method is used in the environment that requires humidity and temperature control granulation, so it can not only produce NPK fertilizer, but also granulation in this way.
Dry manufacturing is a kind of powder fusion method, which is used in pharmaceutical industry and chemical fertilizer process to improve the fluidity of powder by increasing particle size.

Dry Granulators for npk fertilizer production

This operation is done using a roller granulator and can be configured in different configurations and equipment designs. We also provide NPK fertilizer granulator equipment.

NPK dry granulation machine working performance

The roller granulator provides a powerful dry manufacturing process to produce particles with excellent fluidity. It is found that the fertilizer prepared by this method has good uniformity, compactness and low brittleness. The use of this method helps to reduce the physical and chemical limitations used to overcome materials.

How to make npk fertilizer granules?

With the continuous development of science and technology, the demand for agricultural fertilizer is higher and higher. For different crops, different regions and soils, the demand for fertilizer is different. In order to meet the actual needs of crop growth, in NPK fertilizer production line, fertilizer production enterprises should try to plant soil, apply fertilizer, prepare special fertilizer, adopt professional NPK fertilizer production process to produce compound fertilizer with multiple nutrients.

Roller granulator is widely used in NPK fertilizer production line. This kind of fertilizer granulator plays an important role in the production of compound fertilizer. The roller press granulator uses physical extrusion to produce elliptical particles. The roller granulator has greatly promoted the development of extrusion granulation of compound fertilizer and the extrusion granulation process of NPK fertilizer production line.

Production of compound fertilizer granules by rolling granulator
The characteristics of raw materials have an important influence on the granulation effect of roller granulator. The roller granulator can be used for granulation production of ammonium carbide, ammonium chloride, ammonium sulfate, vegetables, ammonium nitrate, magnesium sulfate, magnesium silicate, zinc sulfate, etc., as well as the granulation of NK compound fertilizers such as organic fertilizer and biological fertilizer.

On the other hand, the temperature of raw materials has a great influence on extrusion. In the extrusion process, the friction between the particles will generate heat and increase the material temperature. Generally speaking, the increase of temperature is conducive to the smooth completion of the extrusion process and the strength of the plate. However, too high temperature will also bring adverse effects, especially in the processing of urea based fertilizer materials, too high temperature will make the material adhere to the coil.

The roller granulator designed by Zhengzhou SX fertilizer equipment manufacturer adopts normal temperature extrusion granulation process, which can better maintain the characteristics of raw materials without affecting fertilizer efficiency. In order to avoid fertilizer bonding roller, the roll body of roller granulator was refined with a kind of anti-corrosion, wear-resistant, impact resistant and durable metal. More details in npk granules producion, go to https://www.fertilizermachinesale.com/npk-compound-fertilizer-granulation-equipment/

How to make npk fertilizer graules?

The physical and chemical properties, apparent structure and internal structure of products produced by different NPK compound fertilizer production processes are different. It leads to the difference of nutrient release, soil acidity and root zone nutrient change, which affects the relationship between nutrient release rate and soil nutrient supply and demand, and finally leads to crop growth. Differences in yield and fertilizer efficiency.

NPK Fertilizer Production Line Design Layout

Therefore, the difference of fertilizer efficiency between different processes of compound fertilizer is due to the differences of physical and chemical properties and structural characteristics of compound fertilizer itself, as well as the difference of manufacturing technology. In order to improve crop yield and fertilizer efficiency, NPK fertilizer production process must be improved.

NPK fertilizer production process solid aggregate method

In this method, single alkali fertilizers (such as urea, ammonium nitrate, ammonium chloride, ammonium sulfate, ammonium phosphate, potassium chloride and sulfuric acid) are used as raw materials. After grinding to a certain fineness, the raw materials are gathered and granulated in the drum of the rotary granulator by adding water and heating.

In the process of granulation, a small amount of phosphoric acid and ammonia can be added into the rotary drum granulator to improve the granulation conditions of NPK fertilizer production. It is one of the methods widely used in the world to obtain compound fertilizer products by drying, sieving and cooling granular materials. This method was used by the early United States, India, Japan, Thailand and other Southeast Asian countries.

Production of NPK compound fertilizer by solid polymerization

Zhengzhou SX fertilizer machine manufacturer, with strong technical strength, advanced fertilizer granulation technology, excellent product quality and perfect service system, has become a fertilizer production equipment industry by customers praise and trust manufacturers. We provide NPK fertilizer production machinery, and can design professional compound fertilizer production process for you. Our NPK compound fertilizer production equipment sells well in China, as well as the United States, South Korea, Malaysia, Australia, Thailand, Vietnam, Indonesia, Philippines, Pakistan and other countries.

How to produce npk fertilizer with double roller granulator

Double roller granulator is an important fertilizer granulator in NPK compound fertilizer industry. Using the extrusion principle, the fertilizer granules with a diameter of 3.5-10 mm are formed, and the granulation rate is higher than 85%. Double roller granulator is a common granulation method in NPK fertilizer production process. It does not dry at room temperature (moisture content is 2% – 5%).

Low cost and fast granulation speed bring good economic benefits for compound fertilizer investment.

Working principle of double roller granulator

Double roller fertilizer granulator machine is the representative of fertilizer granulator with extrusion mode. The dry material is compressed into a hard material. Dense blocks under pressure are extrusion processes. The blocks are then crushed, screened and pelletized, which is the granulation process. The function of extrusion is to squeeze the air between particles, so that the distance between particles is close enough to produce interaction. The hardness of particles produced by rolling is mainly attracted by intermolecular forces. Our double roller granulator is continuous extrusion of materials.

In NPK fertilizer production process, roller granulator has the following advantages compared with other fertilizer granulators:

Double roller granulator for NPK fertilizer production

1. There is no drying system in the fertilizer processing process of roller press granulator. The fertilizer can be granulated at room temperature with a moisture content of 2% – 5%. It forms once and costs less.
2. Rouble roller granulator has small power, reliable motor, no waste discharge, stable granulation and convenient maintenance.
3. Roller granulator has wide adaptability to raw materials. It can be used for granulation of compound fertilizer (including organic fertilizer, NPK fertilizer, biological fertilizer and magnetic fertilizer), mineral powder, chemical industry, feed and other raw materials.
4. This granulator has advanced structure, advanced technology and good economic benefits;
5. Popularize the series production of domestic fertilizer such as rare earth fertilizer, ammonium bicarbonate fertilizer and polysulfate fertilizer.