Tag: disc granulator

For the granulation stage of organic fertilizer production lines, disc granulators are the preferred equipment for most manufacturers due to their outstanding advantages, including strong adaptability, high granulation quality, and low operating costs. This equipment not only precisely matches the characteristics of organic fertilizer raw materials but also balances production efficiency and product quality, providing critical support for stable production line operation.

In terms of raw material compatibility, disc granulators are far more compatible with organic fertilizer materials than other equipment. Organic fertilizer raw materials are mostly loose, fibrous materials such as livestock and poultry manure and composted straw, which have large moisture fluctuations. By precisely matching the inclination angle and rotation speed, the disc granulator utilizes the dual effects of the material’s own gravity and centrifugal force to gradually roll the loose material into granules. This eliminates the need for excessive compression, which damages the fiber structure. Furthermore, the disc granulator can accommodate raw materials of varying particle sizes, eliminating the need for frequent adjustments to equipment parameters and significantly reducing operational complexity.

Granulation quality is the core reason for choosing a disc granulator. High-quality organic fertilizer granules require a smooth surface, moderate hardness, and good water solubility for easy storage, transportation, and field application. The disc granulator’s granulation process utilizes a “rolling granulation” mechanism, with the pellets continuously tumbling within the disc. This not only ensures uniform nutrient coating but also creates pellets with consistent density, resulting in a high yield rate. Furthermore, the pellet diameter can be flexibly controlled by adjusting the disc speed, meeting the fertilization needs of different crops.

From a cost-effectiveness perspective, the disc granulator also offers significant advantages. Its simple structure, consisting solely of a disc, transmission, and frame, reduces failure rates and reduces maintenance costs compared to extrusion granulators. In terms of energy consumption, the power output of each unit is moderate, and the energy consumption per unit product is significantly lower than other granulation equipment. Furthermore, the disc granulator’s small footprint allows for flexible integration into production lines of varying sizes. Whether small or medium-sized family farms or large organic fertilizer producers, they can choose the appropriate model based on their production capacity needs, maximizing investment returns.

In response to the demand for green agriculture, the disc granulator, through its efficient and energy-efficient granulation method, helps improve the quality of organic fertilizer products, becoming a crucial link between agricultural waste resource utilization and green farming.

In fertilizer production lines, the choice of disc granulator directly impacts production capacity and product quality. Combining the technical specifications and application characteristics of Huaqiang Heavy Industry’s disc granulators, a sound selection requires focusing on four key dimensions.

First, precisely matching production needs is crucial. Equipment requirements vary significantly across industries. For the fertilizer industry, when producing organic fertilizer, rubber or polyurethane-lined models are preferred to avoid corrosion and accommodate fermentable materials like livestock and poultry manure. The recommended rotational speed is 10-18 rpm to preserve organic matter activity. For inorganic compound fertilizer production, ensuring uniform feed distribution and a consistent mixing of nitrogen, phosphorus, and potassium is crucial. Production capacity selection should be based on specific parameters. For example, a small workshop with an hourly production capacity of 0.05-0.15 tons should choose the ZL-500 model, while a large factory with a production capacity of 3.5-6 tons should opt for the ZL-3600 model. A 10%-15% capacity margin should be reserved to account for seasonal fluctuations.

Second, pay close attention to the core configuration details of the equipment. The drive system determines operational stability. For example, the ZL-3600 model, equipped with an 18.5kW motor and a 10r/min speed, can accommodate high-load granulation needs. The disc inclination angle should be adjustable from 30° to 60°, allowing for flexible adjustment based on material viscosity. For example, highly viscous mineral powders require a larger inclination angle of around 50° to reduce wall sticking. The water spray system should be equipped with multiple sets of adjustable nozzles to ensure a stable moisture content of 10%-20% to prevent loose particles and agglomeration. This is crucial for the strength of fertilizer pellets and the quality of metallurgical mineral powder pellets.

Furthermore, a comprehensive assessment of the manufacturer’s capabilities is crucial. Prefer companies like Huaqiang Heavy Industry that have comprehensive production capabilities. Their 12 disc granulator models cover varying production capacity requirements and allow customers to visit their factory for a firsthand understanding of the equipment’s production processes and quality control procedures. Also, consider whether the manufacturer offers customized services.

Finally, prioritize after-sales service and supporting support. Confirm whether the manufacturer offers free installation, commissioning, and operator training to prevent production disruptions caused by improper operation. Equipment packaging must meet transportation standards, such as packaging the main unit bare to minimize impacts and plywood boxes for electrical components. Customized wooden boxes can be used for special transportation needs. Furthermore, the inventory cycle and warranty policy for consumable parts such as nozzles and inner linings must be clearly defined to ensure long-term stable operation of the equipment and reduce future maintenance costs.

Disc granulators are widely used in organic fertilizer production lines due to their advantages, such as uniform granulation and low cost. However, in actual operation, they are susceptible to various factors, leading to various problems that affect production efficiency and product quality.

Improper control of raw material moisture is a primary challenge. If the moisture content is too high, the raw material will easily clump on the inner wall of the disc, forming large, adhered masses. This not only prevents proper granulation but also increases the difficulty of equipment cleaning. If the moisture content is too low, the raw material will have poor flowability, making it difficult to agglomerate into granules, resulting in loose and easily broken granules. To address this issue, precise control of the raw material moisture content using a moisture meter before granulation is required. Typically, the moisture content is maintained at a stable level of 25%-35%. If the moisture content is not within this range, it should be adjusted promptly using a dryer or humidifier.

Improper disc inclination and rotation speed can also cause problems. If the inclination angle is too large, the raw materials will stay in the disc too short, causing the particles to be discharged before they have time to fully round, resulting in irregularly shaped finished particles. If the inclination angle is too small, the raw materials will pile up, easily causing “sticking” and affecting normal equipment operation. Excessive rotational speed will subject the raw materials to excessive centrifugal force, preventing effective agglomeration. Too slow rotational speed will significantly reduce granulation efficiency. Generally, the disc inclination angle should be adjusted to 35°-45° and the rotational speed to 15-20 rpm, depending on the raw material characteristics. These parameters should be gradually optimized through trial production.

In addition, uneven mixing of raw materials can also affect granulation performance. If the organic raw materials and auxiliary materials are not fully mixed, nutrient imbalances in certain areas can lead to poor granulation quality and uneven particle size. This requires the use of high-efficiency mixing equipment before granulation to ensure that the raw materials are mixed uniformly to a level above 90%. Regular inspection of the mixing blades of the mixing equipment should also be performed to prevent blade wear that may reduce mixing efficiency.

In response to these common problems, a complete inspection mechanism needs to be established during production, and the operating status of the equipment and raw material indicators should be checked regularly, and the process parameters should be adjusted in time to ensure the stable operation of the disc granulator and improve the quality of the finished organic fertilizer.

In industries requiring granular materials, such as fertilizers, building materials, and metallurgy, the choice of granulation equipment directly impacts production efficiency and product quality. Disc granulators, with their numerous advantages, have become the preferred equipment for many companies.

In terms of granulation efficiency, disc granulators excel. Their unique disc design allows the material to quickly form a stable trajectory during rotation, shortening the time it takes for the material to aggregate and granulate. For example, in fertilizer production, under similar operating conditions, a disc granulator can process dozens of tons of raw materials per hour, increasing efficiency by over 30% compared to traditional granulation equipment. This significantly reduces production cycle time and meets the needs of large-scale production.

Granulation quality is a key consideration when choosing a granulator, and disc granulators offer significant advantages in this regard. By precisely controlling the disc’s rotational speed, inclination, and material moisture content, they achieve uniform granule size, typically maintaining a stable diameter of 2-5 mm. The granules are also strong and resistant to breakage. This characteristic is particularly important in fertilizer production. High-quality granulated fertilizers are not only easy to store and transport, but also ensure uniform nutrient release, improving fertilizer utilization and enhancing product market competitiveness.

The disc granulator’s wide range of applications is a key factor in its popularity. It can efficiently adapt to applications ranging from organic fertilizer and compound fertilizer production lines to the processing of building materials such as cement and expanded clay, and even to the granulation of metal ore powders. Different materials require only adjustments to relevant parameters, eliminating the need for large-scale replacement of equipment components. This reduces equipment costs associated with producing different products and enhances production flexibility.

Disc granulators also offer advantages in terms of energy consumption and cost. Their relatively simple structure and low power consumption during operation can reduce energy costs per ton of material produced by 15%-20% compared to other types of granulators. Furthermore, the equipment’s low manufacturing and maintenance costs, along with the limited number of wearing parts and easy replacement, reduce ongoing operating expenses and offer significant financial savings.

Overall, the disc granulator‘s advantages in efficiency, quality, applicability, and cost make it an ideal choice for granulation production.

Fertilizer granulators are widely used in the fertilizer industry, and disc granulators are particularly common. What are some common problems with disc granulators in fertilizer production? If problems such as material sedimentation and clumping occur during granulator operation, how can you resolve them? Below, we will guide you through resolving these issues.

Precipitation can occur during fertilizer production. Some materials cannot be mixed; when they are mixed and dissolved in water, precipitation occurs. Some fertilizers are soluble in certain proportions, but above a certain concentration, salting out occurs, causing another material to precipitate. Some materials, such as metal salts, are easily soluble in acidic media, but will precipitate. Other materials, such as humic acid, are easily soluble in alkaline media, but will precipitate when dissolved in acidic solutions.

The main methods to prevent precipitation are to properly adjust the pH of the solution, add cosolvents, and increase the solubility of insoluble substances. The raw materials used in NPK fertilizer production lines should be properly proportioned to prevent salting out and oversaturation. Appropriate additives should be added to protect the reaction materials and prevent precipitation. Appropriate raw materials should be selected to prevent precipitation caused by reactions between them.

Bloating in fertilizer production is caused by the release of gas from the reaction of two or more materials. Materials that may cause bloating during fertilizer production include borax, ammonium salts, and fillers. To effectively prevent bloating, the following points should be noted when using a disc granulator to produce pellets: When sourcing qualified raw materials, avoid blindly pursuing low costs; and ensure that raw materials are properly combined to prevent chemical reactions between them.

Clumping in fertilizer production: This problem is primarily related to the raw materials, humidity, temperature, external pressure, and storage time. Organic fertilizer production equipment requires the proper selection of raw materials, meaning those that are less prone to caking.