The double roller granulator consists of one roll with opposite rotation direction, which is installed side by side with a small spacing.

Main characteristics of compound NPK fertilizer produced by double roller granulator

The double roller granulator consists of one roll with opposite rotation direction, which is installed side by side with a small spacing. Generally, one roller is fixed and the other is relatively rotating. A certain number of die holes are engraved on the surface of each roll. This fertilizer granulator machine price is cheap and easy to operate.

The powder material enters the hopper. With the continuous rotation of the roller, the material enters the arc triangle between the two rollers and is gradually compressed. When the roller reaches the geometric center line of the opposite roller, the fertilizer in the mold hole is pressed into fertilizer under the maximum pressure. When the roller rotates through the center line, there is sliding between the particles and the mold hole. Under the action of gravity, the granular fertilizer falls off from the mold hole. This extrusion process is purely volume compression, and the force is mainly related to the radius of the counter roll, die hole size and fertilizer filling degree. In addition, the full agitation before granulation and the screening in the later process, there is no temperature rise in the production of the whole process, and there is no need to dry and remove water, so that the material does not have chemical reaction, so the processing is very convenient.

The main characteristics of compound NPK fertilizer produced by double roller granulator are as follows.

1. It can process compound fertilizer containing certain proportion of nitrate nitrogen. Nitrate nitrogen has been widely used because of its quick effect, but it has strong hygroscopicity. It will be deliquesced into mud under high temperature and humidity, which makes the npk fertilizer granulator unable to produce. There is no temperature rise in the production of double roller granulation, and there is no need to dry and remove water, so that the material does not have chemical reaction, so it is very convenient to process.

2. The water-soluble phosphorus content index of the product is easy to guarantee. When superphosphate (or heavy calcium) is used as phosphorus source and mixed with urea and potassium chloride, the liquid phase of the mixture is often increased due to the free acid contained in the product or the addition reaction occurs. It is easy to degrade the water-soluble phosphorus by adding calcium magnesium phosphate fertilizer to solve the problem. In the production of the equipment, phosphorus ammonia (or heavy calcium) and calcium magnesium phosphate fertilizer are added according to the standard, and the water-soluble phosphorus content of the product is within the standard index Inside.

drum granulator

3. Widely used raw materials. In low concentration, ammonium phosphate, ammonium sulfate and ammonium sulfide can be used as nitrogen source, superphosphate and calcium magnesium phosphate fertilizer can be used as phosphorus source; ammonium sulfate, ammonium chloride and urea can be used as nitrogen source for medium and high concentration, and superphosphate (heavy calcium), ammonium phosphate and calcium magnesium phosphate fertilizer can be used as phosphorus source.

4. The anti crushing and hardness of the product meet the requirements of the index. The dissolution and diffusion of the product in the soil are much slower than that of the powder fertilizer. After deep application of the granular fertilizer, the ammonia volatilization, leaching loss and denitrification loss are reduced, and the utilization rate of chemical fertilizer is improved.

Zhengzhou Tianci Heavy Industry Machinery Ltd has been established for 20 years. It has experienced many ups and downs, rich production experience and continuous innovation spirit. Our main production of organic fertilizer machines are: organic fertilizer granulator machine, crusher, mixer, double roller granulator, conveyor, compost windrow turner, coating machine, packaging machine, dryer, cooler, screening machine, etc., while the sale of 1-200000 npk fertilizer production line, organic fertilizer production line, biofertilizer project production line, BB fertilizer complete equipment. We provide customers with a series of after-sales services, such as plant design, equipment debugging and installation. We are looking forward to cooperating with you!