How to Use Double Planetary Mixer to Produce Fertilizer?

Double Planetary Mixer

A double planetary mixer contains two mixing bowls that rotate on their own axis within a larger stationary housing. The bowls also revolve around a central shaft in opposite directions, creating an intricate planetary motion. Inside each bowl are mixing tools or blades that continuously fold and shear material against the wall as it circulates. This intense shearing and folding action thoroughly combine even very fine or cohesive ingredients that can be difficult to blend uniformly with other mixers. Double planetary mixers typically range in capacity from 50-5,000 liters, allowing efficient production of large fertilizer batches. Their robust design accommodates dry, wet, or heat-treated mixing applications as well.

Details of Double Planetary Mixer

  • The common agitators include paddle type, twist type, claw type, and frame type.
  • good mixing, reaction, kneading, and dissolution functions.


inks, colorants, dyes, coatings, and other industries.

Fertilizers are essential for maximizing agricultural yields by replenishing nutrients in soils. As the world’s population grows, there is increasing demand for fertilizers to help boost global food production. Producing high-quality fertilizers efficiently and cost-effectively is therefore critical. Double planetary mixers excel at thoroughly blending fertilizer ingredients into uniform formulations while maintaining strict quality control. Their application in the fertilizer industry helps meet rising demand.

Dry Blending in Fertilizer Production

Most fertilizers are produced via a dry blending process where various dry ingredients like nitrogen, phosphorus, and potassium sources are uniformly combined. This involves mixing macro and micronutrients with inert fillers and other additives. Thoroughly distributing ingredients at a fine, microscopic level is crucial for fertilizer performance in the soil. Any segregation or lack of homogeneity can lead to inconsistent nutrient availability for crops.

Double planetary mixers are well-suited for dry blending applications common in fertilizer production. Their unique mixing motion provides superior homogeneity compared to other dry mixing equipment like tumble blenders. This high degree of uniformity ensures fertilizers deliver consistent, predictable nutrient levels throughout their application area.

FPM double planetary mixer

Benefits of Fertilizer Production

– Uniform blending – Their planetary motion ensures all ingredients are evenly distributed throughout each batch. This consistency is vital for reliable, predictable fertilizer performance in the field.
– Thorough de-lumping – Dry fertilizer ingredients like urea or potash often contain aggregates that need breaking down into uniform particle sizes. Double planetary mixers gently de-lump without compromising integrity.
– Moisture control – Many fertilizer formulations require precise moisture levels to prevent caking, clumping, or other handling issues during transport and application. Programmable temperature/time controls carefully regulate moisture.
– Continuous production – Large-capacity mixers allow ongoing, high-volume fertilizer manufacturing without interruptions for cleaning or changeovers.
– Hygienic design – Smooth surfaces and sealed components keep production lines clean and contained. This is important for organic fertilizers or those used in food crop cultivation.
– Automated controls – Programmable logic ensures consistent, repeatable mixing protocols and tight batch-to-batch quality control. Data logging supports process documentation.
– Minimal dusting – Enclosed, vented mixing chambers reduce airborne dust versus other equipment, improving workplace safety.

Nitrogen-Phosphorus-Potassium Blending Example

As an example, consider producing a common NPK 15-15-15 granular fertilizer blend containing:

– Urea (45% nitrogen – 30% of total weight)
– Diammonium phosphate (18% nitrogen, 46% phosphorus – 30%)
– Potassium chloride (0% nitrogen, 0% phosphorus, 60% potassium – 30%)
– Clay filler (10%)

The clay filler is first pre-blended and loaded into the double planetary mixer. Urea is then slowly fed in and thoroughly distributed throughout the clay using the intense shearing action.

Next, diammonium phosphate is carefully added and similarly blended until homogenous. The potash follows and the mixing cycle continues to evenly disperse all ingredients.

The granular NPK fertilizer is then discharged, sampled, and packaged if quality tests confirm specifications are met. Regular analysis verifies consistent nutrient levels across production runs for this and other formulations.

Compared to tumble blenders commonly used, the double planetary mixer achieves the necessary uniformity and production efficiency goals for this NPK blend in a hygienic, repeatable process. Its ability to gently de-lump even cohesive dry ingredients makes it ideal for fertilizer manufacturing.

double planetary mixers provide an excellent solution for fertilizer producers to meet strict quality demands cost-effectively. Their unique mixing motion uniformly distributes ingredients at a fine scale while preventing degradation. Automated controls ensure consistent, repeatable quality batch after batch. As the global population rises, double planetary mixing will remain crucial for sustainably boosting agricultural yields through high-quality, efficient fertilizer production.

As a professional double planetary mixer manufacturer, FRANLI provides a complete set of mature equipment for related machines and production lines for more than 60 countries and thousands of industries in the world, and in Russia, Turkey, Spain, Brazil, Malaysia, Indonesia, and other regions, for Many enterprises have established related production lines.

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Guidelines For Double Planetary Mixer

FRANLI is a professional double planetary mixer manufacturer. Our double planetary mixer is especially suitable for dissolving, mixing, kneading, and reacting from powder to high-viscosity and high-density materials. According to different viscosities and material characteristics, Choose the right stirring paddle, and provide supporting equipment and production lines for double planetary mixers.

Double Planetary Mixer
Guidelines For Double Planetary Mixer

How to buy a double planet mixer?

This double planetary mixer can mix all types of viscosity of the material in no time. This double planetary mixer contains high-capacity blades that can work from 1 million centipoises to 8 million centipoises.

Double Planetary Mixer
Guidelines For Double Planetary Mixer

Double Planetary Mixer For Sale

FRANLI double planetary mixer is a high-efficiency, multi-purpose, and no-dead angle mandatory mixing and dispersing equipment.

Double Planetary Mixer
Guidelines For Double Planetary Mixer

Electronic Slurry & Double Planetary Mixer

Double planetary mixers are widely used, especially in the field of electronic slurry, whether it is stirring or mixing, the final output effect has been recognized by all walks of life.

Laboratory Double Planetary Mixer
Guidelines For Double Planetary Mixer

Double Planetary Mixer: Laboratory & Production

There are two types of double planetary mixers produced by FRANLI, which mainly involve two major application fields, one is laboratory research type, and the other is a factory production line

Double Planetary Mixer
Guidelines For Double Planetary Mixer

Structural Adhesive Production Equipment & Double Planetary Mixer

The double planetary mixer is one of the ideal types of equipment for low-viscosity materials. This facility has a low and fast mixing dispersing disc, which can complete the functions of high shear and dispersing low viscosity materials at the same time.

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