Double Roller Press Granulator: a new life of turning powder into granules

fertilizer granulator Nov 5, 2025

Efficient and eco-friendly granulation technology that revitalizes powder materials, opening a new era in industrial granulation

A Revolutionary Breakthrough in Granulation Technology

In modern industrial production, double roller press granulators are quietly transforming traditional powder material processing methods with their exceptional performance and environmental characteristics. This innovative granulation equipment converts loose powders or fine particles into regular, sturdy pellet products through precise mechanical design and advanced working principles, bringing unprecedented convenience to various industries.

The core appeal of double roller press granulators lies in their unique working principle. When powder materials enter between two counter-rotating rollers, powerful pressure instantly compacts the loose material into shape. This high-pressure extrusion process not only gives the pellets ideal shape and strength but, more importantly, significantly enhances material flowability and usability. Products processed through granulation not only become more convenient to package but also see substantial improvements in transportation and storage efficiency, truly achieving a magnificent transformation from powder to premium product.

Extensive Application Fields

The outstanding performance of double roller press granulators makes them shine in numerous industrial fields, becoming an important force driving industrial upgrading. Their application scope is so broad that it covers almost all industries requiring pelletization processing.

Fertilizer Industry

Granulation of various fertilizers including organic fertilizers, compound fertilizers, and slow-release fertilizers to enhance fertilizer efficiency and usability

Chemical Industry

Pelletization processing of chemical raw materials such as catalysts, dyes, pigments, plastics, and rubber additives

Pharmaceutical Industry

Precision granulation of pill preparations and pill intermediates to ensure drug quality and stability

Food Industry

Granulation processing of products such as seasonings, food additives, and feed to improve product quality

Environmental Protection Industry

Innovative applications in environmental fields including sludge treatment, coal slurry shaping, and waste resource utilization

The true value of double roller press granulators lies in their perfect integration of industrial needs with environmental concepts. Compared with traditional granulation methods, this equipment requires no binder additives, avoiding chemical pollution and truly achieving green production. Meanwhile, its efficient granulation capacity and stable operational performance make large-scale industrial production possible, providing strong technical support for sustainable development across various industries.

Opening a New Chapter in Industrial Granulation

With continuous advancement of global industrial technology and increasing environmental requirements, modern granulation equipment like double roller press granulators and rotary drum granulators are becoming indispensable in manufacturing. These systems are revolutionizing the fertilizer production process, from specialized fertilizer compaction machines to complete NPK production lines.

Our comprehensive solutions cover the entire spectrum – from organic fertilizer fermentation process to advanced NPK fertilizer production technology. We provide specialized equipment for biofertilizer production, innovative new type two-in-one organic fertilizer granulators, and complete roller press granulator production lines with integrated rotary screeners for optimal quality control.

Whether through efficient drum granulation or advanced fertilizer granules compaction techniques, our equipment delivers tangible value across industries by improving production efficiency, optimizing product quality, reducing energy consumption, and minimizing environmental impact. As technology develops and application fields expand, these granulation solutions will play an increasingly vital role on the global industrial stage.

Easy Guide to Homemade Organic Fertilizer

fertilizer granulator Nov 5, 2025

Easy Guide to Homemade Organic Fertilizer

Liquid Fertilizer Method

Compost Tea (Quick Nutrient Boost)

This method provides rapid nutritional support for plants, especially suitable for plants in urgent need of nutrients.

Materials: Bucket, water, organic materials (grass clippings, weeds, coffee grounds, fruit and vegetable scraps)

Instructions:

• Fill bucket half-full with organic materials (chopping increases surface area)
• Fill with water (rainwater is ideal, tap water should be dechlorinated)
• Steep for 24-48 hours, up to 1-2 weeks for stronger fertilizer
• Strain liquid and dilute with water (typically 1:1 or 1:3 ratio)
• Apply to soil or use as foliar spray

Compost Method

Long-term Soil Amendment

This method takes longer but produces nutrient-rich soil amendment.

Materials: Compost bin, green materials (nitrogen-rich), brown materials (carbon-rich)

Instructions:

• Layer green and brown materials
• Keep pile moist
• Turn pile every few weeks to aerate
• Ready when transformed into dark, crumbly soil (2-12 months)

Other Homemade Options

Eggshell Calcium Fertilizer

Crush eggshells and mix with vinegar to make calcium-rich fertilizer. Dilute before use.

Banana Peel Fertilizer

Dry or boil banana peels, then crush and add directly to soil around plants.

Coconut Water Nutrient Solution

Mix 3.5 tablespoons fresh coconut water with 4 cups chlorine-free water, spray on leaves and roots.

Aged Manure

Use only aged manure as fresh manure can be too strong. Mix into soil or add to compost pile.

Usage Tip: Test all homemade fertilizers on small areas first. Start with lower concentrations as different plants have varying tolerance levels.

Environmental Value and Significance

Homemade organic fertilizers provide an economical solution that transforms kitchen waste and yard trimmings into valuable nutrients through simple organic fertilizer fermentation processes. This approach significantly reduces chemical fertilizer dependency, minimizes environmental pollution, and improves soil structure. While urban gardeners can practice basic composting, larger operations utilize equipment like the wheel compost turner to enhance the organic fertilizer fermentation process, demonstrating how fermentation composting technology for organic fertilizer can be adapted to various scales.

For those considering commercial production, understanding organic fertilizer machinery price becomes essential when scaling up from home composting to establishing a small organic fertilizer factory. The transition from manual turning to mechanized systems using large wheel compost turner or chain compost turner equipment marks a significant step in production capacity. These machines form the core of any complete organic fertilizer production line, efficiently managing the fermentation process that converts organic waste into high-quality fertilizer.

The integration of specialized equipment like the organic fertilizer granulator or other fertilizer granulator types enables the transformation of composted materials into uniform, easy-to-apply products. This scalable approach – from simple backyard composting to sophisticated production lines – allows both urban balcony gardeners and rural farming enthusiasts to participate in environmental protection while promoting sustainable agriculture. The versatility of modern organic fertilizer technology ensures that everyone can contribute to greener agricultural practices regardless of their scale or budget.

Soil Restoration and Fertilizer Production Technology

fertilizer granulator Nov 4, 2025

 Healthy soil is the foundation of sustainable agricultural development. Facing widespread global issues of soil infertility, pH imbalance, and compaction, the scientific use of fertilizers and advanced organic fertilizer production line technology has become crucial for soil restoration.

Comprehensive Solutions for Soil Infertility

For nutrient-deficient soil, the first step is to produce high-quality organic fertilizers through organic fertilizer production equipment. Modern compost fertilizer machines can efficiently process livestock manure and agricultural waste to produce decomposed organic fertilizer rich in organic matter and trace elements.

While supplementing basic nutrients, bio-organic fertilizers play an important role. Professional bio organic fertilizer production lines integrate microbial fermentation and granulation processes, producing granular fertilizers containing beneficial bacteria through organic fertilizer granulators. These equipment are core components of equipments required for biofertilizer production, ensuring microbial activity and improving fertilizer efficiency.

Precise Strategies for Soil pH Adjustment

For acidified soil, in addition to traditional neutralizing agents, specific fertilizer formulations can also be used for adjustment. Modern NPK fertilizer production lines can precisely control fertilizer components to produce specialized fertilizers with pH-adjusting functions.

In the NPK fertilizer manufacturing process, the fertilizer mixer machine ensures even distribution of various raw materials, while the disc granulator is responsible for forming the mixed materials into uniform granules. The entire NPK production process achieves precise formula control, providing customized solutions for soils with different pH levels.

Systematic Approaches to Soil Compaction

Improving soil compaction requires the synergistic effect of organic matter and microorganisms. Complete organic fertilizer production lines can transform agricultural waste like straw into high-quality organic fertilizers, which become more convenient for application and storage after processing through organic fertilizer granulators.

In fertilizer production technology, fertilizer granulation processes continue to advance, with innovative designs of disc granulator machines improving granule uniformity and strength. Meanwhile, the development of NPK blending machines and bulk blending fertilizer machines makes fertilizer formulations more flexible, allowing quick adjustments according to specific soil conditions.

Integration of Modern Fertilizer Production Technologies

The organic combination of complete NPK fertilizer production lines and bio organic fertilizer production lines provides comprehensive technical support for soil restoration. From raw material processing in compost fertilizer machines to precision processing in NPK granulation machines, and finally to finished product preparation through fertilizer granulation, each step affects the quality of the final product.

In the NPK manufacturing process, technological advancements in disc granulators and organic fertilizer granulators have resulted in fertilizer granules with better physical characteristics, which not only improves application efficiency but also enhances soil improvement effects.

Summary

Effective soil restoration fundamentally depends on integrating scientific fertilizer formulations with advanced production technologies. The manufacturing of NPK fertilizer has evolved significantly, with modern NPK fertilizer production lines incorporating specialized equipment like the NPK fertilizer granulator and disc granulator to create precisely formulated products that address specific soil deficiencies.

Within comprehensive NPK fertilizer production lines, equipment selection proves critical to product quality. The NPK fertilizer granulator machine ensures uniform nutrient distribution, while the disc granulator produces consistent, spherical granules ideal for even application. Complementing these, the NPK blending machine guarantees precise formulation accuracy, enabling customized solutions for diverse soil conditions.

By optimizing the entire manufacturing of NPK fertilizer through advanced equipment integration, we can deliver more effective soil restoration solutions. The synergy between NPK fertilizer granulator technology and precise blending systems enables the creation of specialized fertilizers that directly target soil health issues, ultimately supporting sustainable agricultural development through scientifically formulated nutrient management.

Core characteristics of raw materials processable in bio-organic fertilizer production lines

fertilizer granulator Nov 4, 2025

The core raw materials for bio-organic fertilizer production lines are various organic wastes. Their efficient conversion into high-quality organic fertilizer hinges on the core characteristics of the raw materials themselves.

1.Pure Organic Properties and No Pollutants

Processable raw materials must be composed primarily of natural organic matter, such as poultry and livestock manure, straw, mushroom residue, distiller’s grains, and garden leaves, free from excessive heavy metals and toxic chemical residues. Pure organic properties ensure that the resulting organic fertilizer is free from secondary pollution, while providing a pure nutrient substrate for beneficial microorganisms, preventing harmful substances from affecting microbial activity and the final fertilizer’s effectiveness.

2.High Decomposability and Suitable C/N Ratio

Raw materials must contain sufficient amounts of organic matter that can be decomposed by microorganisms, such as cellulose, hemicellulose, and protein. These substances can be decomposed into humus during fermentation, becoming nutrients that crops can absorb. Simultaneously, the raw materials must have an adjustable C/N ratio, adjusted to a suitable fermentation ratio of 25-30:1 to ensure efficient aerobic fermentation.

3.Abundant Nutrient Potential and Stable Source

The raw materials for processing must naturally contain basic nutrients such as nitrogen, phosphorus, and potassium, as well as micronutrients such as calcium, magnesium, and sulfur. After fermentation, these nutrients can be converted into long-lasting, slow-release organic nutrients to meet the needs of crop growth. Simultaneously, the raw materials must have large-scale supply capabilities, such as livestock manure from the poultry industry and straw waste from agricultural production. These sources are stable and concentrated, suitable for the continuous production requirements of bio-organic fertilizer production lines.

These core characteristics make organic waste a high-quality raw material for bio-organic fertilizer production, solving the environmental problem of waste disposal and, through scientific transformation in the production line, allowing “waste” to realize its fertilizer value.

NPK fertilizer mixer machine: The core of precise nutrient mixing

fertilizer granulator Nov 4, 2025

In the NPK fertilizer production process, the fertilizer mixer machine is a key piece of equipment determining the nutrient balance of the product. Its core function is to fully blend nitrogen, phosphorus, and potassium raw materials, as well as trace elements and slow-release agents, ensuring that the nutrient ratio of each fertilizer granule is consistent with the formula, providing a fundamental guarantee for precision fertilization.

Raw material compatibility is its outstanding advantage. NPK fertilizer raw materials have diverse forms and a wide range of specific gravities, requiring the mixer to have a wide range of adaptability. By adjusting parameters such as mixing speed and blade angle, it can adapt to raw materials with different particle sizes (0.5-4 mm) and different moisture contents (≤5%), preventing light raw materials from floating and accumulating, and avoiding heavy raw materials from settling and stratifying, ensuring stable mixing results.

Operation and practicality are designed to meet production needs. Fertilizer mixer machines are typically equipped with a simple control system, allowing for adjustments to the mixing time (generally 5-15 minutes) based on formula complexity, meeting the diverse needs of mass production and small-batch customization. Some models feature an openable chamber design, facilitating the cleaning of residual materials and reducing cross-contamination during formula changes. Simultaneously, the enclosed structure effectively controls dust emissions, minimizing raw material waste and environmental impact, aligning with environmentally friendly production requirements.

As the “nutrient integration hub” of the NPK fertilizer production line, the mixer’s stable adaptability, precise mixing capabilities, and user-friendly operation enable accurate implementation of NPK fertilizer formulations, providing reliable equipment support for precision fertilization in modern agriculture.

Common troubleshooting and solutions for double screws compost turning machines

fertilizer granulator Nov 4, 2025

Double screws compost turning machines operate frequently in organic fertilizer fermentation workshops. Improper operation or untimely maintenance can easily lead to problems such as uneven turning, insufficient power, and equipment jamming, impacting fermentation progress.

1.Dead corners remain after turning, and some areas remain uncomposted

The main cause is excessive clearance between the spiral blades and the sidewalls of the fermentation tank (over 10 cm), or the double screws compost turning machine is moving too fast, preventing material from being turned over the edges. To address this, adjust the position of the spiral blades to reduce the clearance to within 5 cm. Also, reduce the double screws compost turning machine’s speed to ensure that every area is thoroughly turned.

2.Motor overload and tripping, insufficient power

This is often caused by excessive moisture content (over 70%) in the raw materials, resulting in increased friction on the spiral blades due to high viscosity, or by large impurities in the raw materials that may be blocking the blades. To address this, adjust the moisture content of the raw materials to 60%-65% before clearing impurities from the fermentation tank. If the compost tank is frequently overloaded, check the tightness of the motor belt and tighten or replace it.

3.Rapid wear of spiral blades, reducing turning capacity

This is primarily due to the presence of hard impurities (such as sand and gravel) in the raw materials, or the blade material not being suitable for wear resistance. To address this, install a screen to filter out hard particles before the raw materials arrive. Regularly inspect the blades for wear. If the blade thickness has decreased by 1/3 or cracks appear, replace them promptly.

Uniform Feeder: The Stable Choice for Industrial Production

fertilizer granulator Nov 4, 2025

Equipment Overview

The uniform feeder is a key device in industrial production that ensures materials enter subsequent processing equipment at a stable and uniform rate. This equipment is widely used in various industries including chemical fertilizer, building materials, cement, chemical industry, coal, mining, ceramics, grain, and feed. Its main function is to avoid production fluctuations caused by uneven material supply, thereby improving production efficiency and product quality.

Equipment Structure and Composition

Core Components:

• Feed Inlet:Open structure design for smooth material flow
• Feeding Mechanism:Core part of the equipment, including spiral feeders, vibrating feeders, belt feeders, etc.
• Regulating Device:Speed controllers, gates, etc., for precise feeding rate adjustment
• Drive System:Motors, reducers, etc., providing power for the feeding mechanism
• Control System:PLC or microcomputer control system for automated control

Working Principle

Taking the spiral feeder as an example, materials enter from the feed inlet, and the spiral feeder rotates under the drive of the motor. The spiral blades push the materials forward. By controlling the rotation speed of the spiral feeder through the adjusting device, precise control of the material supply rate is achieved. This design ensures that materials enter subsequent equipment at a stable and uniform rate, avoiding material accumulation or interruption, and ensuring the continuity and stability of the production process.

Equipment Advantages

Precise Control

Through advanced regulating devices, precise control of material feeding rate is achieved, ensuring uniformity and stability of material supply, providing reliable support for subsequent processes.

Strong Adaptability

Capable of handling various types of materials, including powders, particles, and flakes, suitable for different industrial production environments, meeting diverse production needs.

Automated Operation

Equipped with advanced control systems, achieving automation of the feeding process, reducing manual intervention, improving production efficiency, and minimizing human errors.

Easy Maintenance

Reasonable structural design makes the equipment easy to clean and maintain, reducing downtime, lowering maintenance costs, and extending equipment service life.

Energy Saving and Efficiency

Adopting energy-saving design, effectively reducing energy consumption, improving feeding efficiency, helping to reduce overall production costs, and enhancing enterprise competitiveness.

Industry Application Value

The uniform feeder plays a crucial role in modern fertilizer production systems, ensuring precise material handling across various manufacturing processes. In NPK fertilizer production line operations, it guarantees accurate proportioning for the NPK blending machine, while in organic fertilizer production line setups, it maintains consistent feeding for windrow composting machine operations. This precision equipment serves as the backbone for both conventional and bio organic fertilizer production line configurations, enabling reliable material flow from initial processing to final granulation stages.

Within comprehensive fertilizer manufacturing systems, the uniform feeder’s importance extends to multiple production stages. It ensures stable raw material supply for disc granulation production line operations and maintains consistent feeding for various fertilizer granulator types, including the disc granulator and double roller press granulator. The equipment’s synchronized operation with windrow machine systems in composting phases demonstrates its versatility across different production methodologies within the same NPK fertilizer line.

The stable and reliable performance of uniform feeders not only improves final product quality but also optimizes entire production processes. By ensuring consistent material flow through every component – from blending equipment to granulation machines – these feeders provide solid technical support for the intelligent and automated development of fertilizer production industries. Their integration across various production lines enables seamless coordination between different processing stages, ultimately enhancing overall system efficiency and product consistency.

How do BB fertilizer companies of different production capacities choose the right mixer operating mode?

fertilizer granulator Nov 4, 2025

The differences in production capacity among BB fertilizer companies (small-scale with daily production capacity below 50 tons, large-scale with daily production capacity above 100 tons) directly influence the choice of BB fertilizer mixer operating mode. Choosing the right mode can improve efficiency by over 30%.

Small-scale companies often operate in batch mode, making the “batch mixing + staged feeding” mode suitable: the single mixing volume is set at 70% of the equipment’s capacity, and feeding is carried out in three batches: 60% base granular fertilizer is added first, followed by 30% powdered raw materials after three minutes of mixing, and finally 10% trace additives. The total mixing time is kept to 10-12 minutes. This mode avoids energy waste caused by idling equipment for small batches of raw materials and facilitates flexible switching of fertilizer formulas.

Large-scale continuous production companies require a “continuous mixing + flow linkage” model: raw materials are continuously fed into the BB fertilizer mixer in proportion via a conveyor belt. The raw material flow rate is linked to the mixing speed. An online detection device is installed at the BB fertilizer mixer outlet to monitor mixing uniformity in real time. If the coefficient of variation exceeds 5%, feedback is immediately provided to adjust the feed ratio. Furthermore, continuous production requires cleaning of the drum wall every four hours to prevent long-term accumulation that can affect the quality of subsequent batches.

Oil palm empty fruit bunch: “Green Raw Materials” for organic fertilizer production lines

fertilizer granulator Nov 4, 2025

As a major waste product of the oil palm processing industry, oil palm empty fruit bunch, with their rich organic matter and unique physical properties, have become a high-quality raw material for organic fertilizer production lines. Their deep integration with various stages of the production line not only realizes waste resource utilization but also optimizes the organic fertilizer production process.

In the raw material pretreatment stage, oil palm empty fruit bunch need to be processed by crushing equipment to break them into 1-3 mm granular materials. This removes coarse and hard impurities while retaining an appropriate amount of fiber structure. The crushed material is then mixed with livestock and poultry manure, microbial agents, etc., in a specific ratio. Its loose properties naturally adjust the carbon-nitrogen ratio of the mixture while improving its permeability, laying the foundation for subsequent fermentation.

In the fermentation stage, oil palm empty fruit bunch a highly efficient combination with a compost turning machine. During the composting and fermentation of the mixed materials, the fibrous structure of the oil palm empty fruit bunch prevents the pile from compacting, while the periodic turning by the compost turner further enhances aeration, allowing aerobic microorganisms to multiply rapidly and maintaining the composting temperature at a stable 55-65℃.

In the post-processing stage, the composted oil palm empty fruit bunches are suitable for the forming requirements of organic fertilizer granulators. Their residual fiber toughness enhances granule cohesion, preventing breakage due to compression during granulation and avoiding die clogging, thus improving granulation efficiency. The formed granular organic fertilizer, retaining some of its fibrous structure, possesses both long-lasting fertilizing effects and soil-improving functions.

The deep integration of oil palm empty fruit bunch with the organic fertilizer production line solves the waste disposal problem and optimizes the production process through the characteristics of the raw materials.

Cyclone Dust Collector: Efficient Gas Purification Solution

fertilizer granulator Nov 3, 2025

Equipment Overview

A cyclone dust collector is a dust removal device that uses centrifugal force generated by rotating airflow to separate particulate matter from the gas stream. With simple structure and low operating costs, it is widely used for gas purification in various industrial processes including cement, chemical, metallurgical, power, and food processing industries, effectively removing dust and particulate matter from flue gas.

Equipment Structure and Composition

Core Components:

• Inlet Pipe:Guides dusty gas into the collector, designed tangentially or spirally to promote airflow rotation
• Cyclone Body:Main part of the equipment, cylindrical design with smooth inner walls for generating and maintaining rotating airflow
• Cone Section:Located below the cyclone body, conical structure helps further separate and collect particulate matter
• Exhaust Pipe:Located at the top of the cyclone body for discharging purified gas
• Ash Hopper:Located at the bottom of the cone for collecting and storing separated particles
• Ash Discharge Device:Star-shaped discharge valves, screw conveyors, etc., for regular removal of particulate matter from the ash hopper

Working Principle

Dusty gas enters the cyclone dust collector through the inlet pipe and enters the cyclone cylinder tangentially or spirally, forming a high-speed rotating airflow. Under centrifugal force, heavier particles are pushed toward the cylinder wall and then fall along the wall into the ash hopper, achieving separation from the airflow. Purified gas is discharged through the central exhaust pipe. The rotating airflow continuously decelerates in the cyclone body and cone, further improving separation efficiency and ultimately achieving dust removal goals.

Equipment Advantages

Efficient Separation

High separation efficiency for larger particle sizes, effectively removing dust from industrial flue gas.

Simple Structure

No moving parts, compact structure, low maintenance costs, long service life, suitable for various industrial environments.

Reliable Operation

Easy operation, stable performance, strong adaptability, capable of handling high-temperature and high-dust-concentration gases.

Economical and Practical

Relatively low initial investment and operating costs, particularly suitable for small and medium-sized gas purification needs.

Environmentally Friendly

No secondary pollution, relatively low energy consumption, meeting modern industrial environmental requirements.

Application Value

With its unique working principle and superior performance characteristics, the cyclone dust collector plays an important role in industrial dust control across various fertilizer production facilities. It provides essential environmental protection for complete production lines including the npk fertilizer production line, organic fertilizer production line, and bio organic fertilizer production line. These systems, which incorporate equipment such as the npk blending machine, disc granulator, double roller press granulator, and windrow composting machine, generate significant dust during operation. The cyclone collector effectively controls particulate matter from the disc granulation production line and windrow machine operations, not only improving working environments and protecting employee health but also reducing atmospheric pollution to promote sustainable development. As environmental requirements continue to increase, cyclone dust collectors will remain crucial in creating cleaner production environments for the fertilizer industry, ensuring that fertilizer granulator operations meet the highest environmental standards while maintaining production efficiency.