20T/H Turnkey NPK Compound Potassium Fertilizer Manufacturing Plant Full Set Production Machinery Details
20T/H Turnkey NPK Compound Potassium Fertilizer Manufacturing Plant Full Set Production Machinery Details
Global agricultural demand for high-nutrient NPK compound fertilizer keeps rising year by year. NPK fertilizers provide balanced nutrients to the crops and plays a critical role in boosting crop yields. Producers and investors who wants to tap into the growing global demand for high-efficiency compound fertilizers, LANE Heavy Industry has researched, developed and manufactures the 20T/H turnkey NPK compound potassium fertilizer manufacturing plant, a fully integrated complete production line tailored for industrial-scale NPK potassium compound fertilizer production. This fully automated NPK fertilizer manufacturing plant combines automated batching, advanced granulation technology, and precision packaging into a single, efficient production system.
This article provides breakdown of a 20-ton per hour (T/H) turnkey NPK compound potassium fertilizer manufacturing plant designed and supplied by LANE Heavy Industry Machinery Technology Co., Ltd.
What Is a Turnkey NPK Compound Potassium Fertilizer Manufacturing Plant?
A turnkey NPK compound potassium fertilizer manufacturing plant refers to a complete, ready-to- operate production facility that is manufactured, delivered, installed and commissioned as a single integrated solution. The 20 T/H featured in this article means this plant can produce 20 tons per hour of premium quality NPK (Nitrogen, Phosphate, Potassium) compound fertilizers.
NPK compound potassium fertilizer manufacturing plant designed and manufactured by LANE Heavy Industry is proven and famous for its stability, efficiency, and customization flexibility. This NPK fertilizer manufacturing plant integrates modern technologies and automation for raw material mixing, granulation, drying, cooling, screening, and packaging into one seamless process.
Main Raw Materials
Ther term NPK stands for Nitrogen, Phosphate, and Potassium. these are the three primary nutrients for plant growth. The production process of this NPK compound potassium fertilizer manufacturing plant utilizes MOP/SOP as the primary potassium source.
Raw materials used in this NPK compound potassium fertilizer manufacturing plant include:
- Nitrogen (N):Provided by urea, ammonium nitrate, or ammonium sulfate
- Phosphate (P):Provided by phosphate rock or superphosphate
- Potassium (K):Provided by MOP (potassium chloride) or SOP (potassium sulfate)
These materials are combined in precise ratios to produce compound fertilizers tailored to specific crop requirements and soil conditions
Core Equipment and Process Flow
A high-performance NPK fertilizer manufacturing plant requires carefully engineered sequence of machinery. LANE Heavy Industry equips its 20 T/H NPK compound potassium fertilizer manufacturing plant with industry-leading components, each designed for continuous, automated operation.
- Raw Material Batching System
The production process begins with the automatic dynamic batching system. LANE NPK fertilizer manufacturing plant features a dynamic batching machine equipped with a weighing scale and sensors to accurately dispatch raw materials into the production line. manufacturer can input the ratio or amount in the PLC control panel to control the formulation.
Raw materials sometimes arrive in clumps or oversized particles. Our NPK fertilizer manufacturing plant utilizes a hammer crusher or cage crusher to reduce the raw material into uniform powder. Proper crushing of the raw material ensures optimal mixing consistency and improves final granule quality.
After crushing, raw materials enter a twin-shaft mixer or horizontal mixer. This NPK compound potassium fertilizer manufacturing plant relies on the mixer to achieve uniform distribution of all nutrients. mixing ensures that each granules contains balanced NPK content. uniform mixing is critical for product quality and customer satisfaction.
Granulation represents the core transformation step in any NPK compound potassium fertilizer manufacturing plant. LANE’s rotary drum granulator is a wet granulator; it is enhanced with steam/water injector. It produces round, dense granules measuring 3.5–4mm in diameter. The rotary drum granulator achieves a granulation rate of over 90%. This minimizes material waste and maximizes production efficiency.
- Drying System
After granulation, the granules contain around 20-30% moisture. This moisture must be removed to prevent caking and ensure long-term storage stability. The NPK compound potassium fertilizer manufacturing plant employs a rotary drum dryer, often configured as a two-stage system to reduce moisture content to approximately 2-3%. The cyclone collectors and bag filters capture dust to maintain clean air discharge.
After high-temperature drying, granules must be cooled before further processing. LANE production line features a counter-flow rotary cooler that reduces granule temperature to within 5°C above ambient room temperature. Proper cooling solidifies granule structure, prevent caking, and maintains product integrity during storage and transportation.
A vibrant rotary screening machine separates on-spec granules from oversized and undersized particles. Qualified granules proceed to the next stage, while off-spec material is returned to the crusher for reprocessing. This closed-loop recycling feature in the NPK compound potassium fertilizer manufacturing plant eliminates raw material waste and maximizes yield.
- Coating System
Surface coating prevents moisture-induced caking and allow manufacturer to add micro nutrients and controlled release coatings. Coated fertilizers maintain free-flowing characteristics and retain their market appeal throughout the supply chain.
The final stage of this NPK fertilizer manufacturing plant is automated weighing and bagging. Electronic weighing and packaging machine fill 25–50 kg bags with accuracy within ±0.2%. This ensures consistent product weight and reduces labor costs. An optional palletizing system may be integrated for bulk handling.
- Centralized PLC Control System
The entire NPK compound potassium fertilizer manufacturing plant operates under a centralized PLC control system. user can utilize SCADA/PLC automation to monitor and control the whole production line. Operators can adjust all production parameters from a single console; this reduces labor requirements and minimizes error rates.
Key Technical Specifications Summary
The 20 T/H NPK compound potassium fertilizer manufacturing plant from LANE Heavy Industry delivers the following performance benchmarks:
| Specification | Value |
| Production Capacity | 20 tons per hour |
| Granulation Method | Wet granulation (rotary drum with steam injection) |
| Granulation Rate | ≥90% |
| Final Moisture Content | ≤2–3% |
| Granule Size | 3.5–4 mm |
| Potassium Source | MOP (up to 62% K₂O content) |
| Packaging Accuracy | ±0.2% |
| Control System | PLC centralized automation |
Advantages of the LANE Heavy Industry Turnkey Solution
Investing in this NPK compound potassium fertilizer manufacturing plant offers multiple strategic benefits:
- Complete Turnkey Delivery: From initial 3D drawing design and process flow layout to manufacturing, installation, commissioning, and operator training, LANE provides end-to-end project execution.
- Flexible Formulation: The NPK compound potassium fertilizer manufacturing plant can produce various NPK ratios (e.g., 15-15-15, 20-20-20) by adjusting batching parameters, accommodating different crop and soil requirements.
- Energy Efficiency: Optimized equipment configuration and heat recovery in the drying and cooling systems reduce operating costs.
- Environmental Compliance: Integrated dust collection systems and waste gas treatment meet international environmental standards.
- Five-Year Warranty: LANE offers a comprehensive five-year warranty along with overseas installation and after-sales support
FAQ: NPK Compound Potassium Fertilizer Manufacturing Plant
Q1: What does “NPK” stand for in compound fertilizer?
A: NPK stands for Nitrogen (N), Phosphorus (P), and Potassium (K)—the three primary macronutrients essential for plant growth. A balanced NPK compound potassium fertilizer manufacturing plant produces fertilizers containing all three nutrients in customizable ratios.
Q2: What is the actual production capacity of this plant?
A: This NPK compound potassium fertilizer manufacturing plant is rated at 20 tons per hour (T/H). Assuming continuous 8-hour daily operation, the plant can produce approximately 160 tons per day, or around 48,000 tons annually.
Q3: What type of potassium source is used?
A: The NPK compound potassium fertilizer manufacturing plant described in this article uses MOP (Muriate of Potash) or SOP (Sulfate of Potash). Both have their own advantages.
Q4: Does LANE Heavy Industry provide installation and training?
A: Yes. LANE offers a complete turnkey solution that includes 3D drawing design, process flow layout, manufacturing, equipment installation, commissioning, and comprehensive operator training. Overseas installation services are available with professional engineering teams.
Of course, we also offer other types of products for your different needs, you can click to view.
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Related News
SOP (sulfate of potash) is a valuable potassium fertilizer used for crops that are sensitive to chloride. During fertilizer production, granulated SOP usually contains residual moisture that must be removed before the product can move to the next processing stage. If the granules are not dried properly, they may become sticky, form lumps during storage, or create problems during screening and packaging.
Choosing the right fertilizer dryer for SOP is therefore an important part of planning an SOP fertilizer production line. However, selecting a dryer is not simply a matter of matching the machine to the production capacity. The inlet moisture content, required final moisture, granule characteristics, heating source, and local fuel prices all affect the actual drying requirements.
For most granular fertilizer applications, a rotary drum dryer is a practical option. It works with a hot air system to remove moisture continuously, making it suitable for production lines that need stable and consistent output.
This guide explains how to select a fertilizer dryer for SOP, compare common drum sizes, choose a suitable heating source, and match a hot blast stove to the drying process.
What Should You Consider When Choosing a Fertilizer Dryer for SOP?
Before choosing a fertilizer dryer for SOP, collect several basic production details. These figures help determine how much heat the system needs and whether a standard rotary drum dryer can meet the production target.
Inlet moisture content
The moisture content of SOP granules entering the dryer is one of the most important factors. Granules with higher moisture require more heat and a longer drying process.
For example, a production line handling 5 tons of wet granules per hour does not necessarily need the same drying capacity as another 5 T/H line. If one line has an inlet moisture content of 8% and the other has 15%, the amount of water that must be removed will be different.
Target outlet moisture
You should also define the required moisture content after drying. A dryer must remove enough water to meet the downstream product requirements, but excessive drying wastes energy and may affect the physical quality of the granules.
The target should be based on the SOP product specification and actual production tests rather than an assumed universal value.
Actual hourly output
Use the amount of wet material entering the dryer, not only the final output of the production line. The dryer handles material before moisture has been removed, so its required feed capacity may be higher than the final dry product weight.
Granule size and physical strength
Small particles, large granules, and fragile particles may behave differently inside a rotary drum. The lifting plates, drum rotation, feeding rate, and drying conditions should be considered together to avoid uneven drying or unnecessary particle breakage.
These details provide a more reliable basis for selecting a fertilizer dryer for SOP than production capacity alone.
How to Choose the Right Rotary Drum Dryer Size?
A rotary drum dryer uses a rotating cylinder to move fertilizer granules through a heated drying zone. Lifting plates installed inside the drum repeatedly raise and release the material, allowing it to come into contact with the hot air.
The drum size affects the amount of material that can be handled and the available space for heat exchange. A larger drum generally provides more internal volume, but the correct size still depends on the material’s moisture content, required evaporation rate, and operating conditions.
The following models are common reference options listed on the manufacturer’s rotary drum dryer product page.
For a 3–5 T/H production line
The LARD1212 has a drum diameter of 1,200 mm and a length of 12,000 mm. It is a reference option for smaller production lines within the listed capacity range.
For a 5–8 T/H production line
The LARD1515 measures Φ1500 × 15000 mm. It provides a larger drum volume for production lines with higher feed rates.
For an 8–12 T/H production line
The LARD1616 measures Φ1600 × 16000 mm. It is a reference model for medium-scale drying requirements.
For a 12–15 T/H production line
The LARD1818 measures Φ1800 × 18000 mm. It is suitable as a reference option for a larger continuous production line.
These figures are the manufacturer’s listed model capacities, not guaranteed output figures for every SOP formulation. A fertilizer dryer for SOP should be selected after checking the actual inlet moisture, target outlet moisture, material properties, and available heating capacity.
For other models and detailed specifications, see the rotary drum dryer specifications.
Which Heating Source Is Suitable for a Fertilizer Dryer for SOP?
The heating source directly affects the operating cost and stability of a drying system. A rotary drum dryer needs a continuous supply of hot air, so the fuel should be selected according to local availability, price, and operating conditions.
Natural gas
Natural gas is convenient where a reliable pipeline supply is available. Its combustion process is relatively easy to control, making it suitable for production lines that require stable hot air temperatures.
However, the local gas price and pipeline connection cost should be included in the investment calculation. Natural gas is not automatically the cheapest option in every country.
Coal
Coal may be an economical heating option in areas where it is readily available at a competitive price. It can provide a substantial amount of heat for continuous industrial drying.
The disadvantages include ash handling, combustion management, emissions control, and additional environmental requirements. Before choosing coal, check local regulations and the cost of the necessary dust and flue-gas treatment equipment.
Biomass
Biomass fuels, such as biomass pellets, may be suitable for factories located near agricultural or forestry residue suppliers. Their cost can be attractive when local resources are available.
However, biomass quality varies. Moisture content, particle size, and heating value can affect combustion stability. A consistent fuel supply is important if the fertilizer dryer for SOP needs to operate for long shifts every day.
Diesel
Diesel is relatively easy to store and can be useful where gas pipelines or other fuel supplies are unavailable. It can also provide a convenient heating option for certain production conditions.
Its main disadvantage is operating cost. For a plant running continuously, calculate the expected diesel consumption before choosing this option.
LPG
LPG can be considered where natural gas is unavailable but a gas-based heating system is preferred. It offers convenient combustion control, although storage, transportation, safety requirements, and fuel prices must be considered.
The best fuel is not necessarily the one with the lowest price per kilogram or cubic meter. Compare the estimated cost of evaporating one ton of water. This provides a more useful basis for evaluating different heating options.
How Does a Hot Blast Stove Work with a Rotary Drum Dryer?
A hot blast stove is an important part of a hot-air drying system. It produces the heated air required by the rotary drum dryer. The two machines perform different functions: the hot blast stove supplies heat, while the rotary drum dryer provides the space and material movement needed for drying.
In a typical arrangement, fuel is burned in the heating unit, and the generated heat is transferred to the air supplied to the dryer. Fans move the hot air through the system. Inside the rotating drum, lifting plates continuously turn the fertilizer granules so that they come into contact with the hot air.
When selecting a fertilizer dryer for SOP, the heating unit should be matched to the actual drying load rather than selected only by the drum’s nominal capacity.
For example, a line with a nominal feed rate of 5 T/H may use a different heating configuration depending on the moisture that must be removed. If the material enters the dryer with high moisture, the required heat load may be greater than that of a line handling drier material at the same feed rate.
A suitable fertilizer dryer for SOP therefore requires coordination between the drum, hot blast stove, fans, and air ducting. The final configuration should be confirmed using the actual material and process data.
How Should You Control the Drying Temperature for SOP?
Temperature control is important because the goal is to remove excess moisture without unnecessarily affecting the granules.
A higher hot-air temperature may increase the rate of moisture removal, but it does not mean that the highest possible temperature is always the best choice. The actual drying result also depends on air volume, material feed rate, residence time, and the amount of moisture entering the drum.
Check the inlet and outlet moisture
Measure the moisture content of the material before and after drying. If the outlet moisture remains too high, the problem may be insufficient heat, excessive feed rate, poor air distribution, or insufficient residence time.
Adjust the feed rate
If wet material enters faster than the system can dry it, the outlet product may not meet the moisture target. Reducing the feed rate can help identify whether the system is operating beyond its effective drying capacity.
Avoid unnecessary overheating
Excessive heat can increase energy consumption and may affect product quality. Temperature settings should be established through commissioning and adjusted according to actual operating results.
For a fertilizer dryer for SOP, stable operation is more useful than simply pursuing a high inlet temperature. The target is consistent outlet moisture with reasonable fuel consumption.
What Other Equipment Is Needed for the Drying Process?
A rotary drum dryer normally works with several auxiliary components. These parts help maintain material flow, hot-air circulation, and dust control.
Hot blast stove: Supplies the heat required for drying.
Blower and induced draft fan: Help move hot air and maintain the required airflow through the drying system.
Dust collection system: Collects dust carried by the exhaust gas and helps control emissions. The specific equipment should be selected according to local environmental requirements.
Conveyors: Transfer wet granules into the dryer and move dried material to the next processing stage.
Rotary cooler: Dried SOP granules may still be hot when they leave the dryer. Cooling them before storage and packaging helps prevent problems caused by packing hot material.
Cooling is a separate step after drying. When planning a fertilizer dryer for SOP, make sure there is enough space and suitable conveying equipment for the following process.
What Information Should You Prepare Before Buying a Fertilizer Dryer for SOP?
Before requesting a quotation, prepare the following information. It helps the manufacturer evaluate the required drum size, heating capacity, and auxiliary equipment.
- Required production capacity: How many tons of wet material need to be processed per hour?
- Inlet moisture content: What is the moisture content of the granules before drying?
- Target outlet moisture: What moisture level should the finished product reach?
- Granule size: What is the approximate particle size range?
- Available fuel: Can the factory obtain natural gas, coal, biomass, diesel, or LPG?
- Daily working hours: Will the dryer operate for 8, 16, or 24 hours per day?
- Installation conditions: What space, power supply, and environmental control facilities are available?
Providing these details makes it easier to determine whether a standard fertilizer dryer for SOP is suitable or whether the drying system needs a customized configuration.
It also helps avoid a common purchasing mistake: choosing a large drum without checking whether the heating system can supply enough energy to remove the required amount of water.
Conclusion
Choosing a suitable fertilizer dryer for SOP requires more than comparing machine dimensions or nominal production capacities. The inlet moisture content, target outlet moisture, hourly feed rate, fuel availability, and required heat input all influence the final selection.
A rotary drum dryer is a practical option for continuous SOP granule drying. Common reference sizes range from Φ1200 × 12000 mm to Φ1800 × 18000 mm for the 3–15 T/H capacity ranges listed above. The hot blast stove should then be selected according to the actual drying load, not simply matched by nominal production capacity.
If you are planning an SOP fertilizer production line, prepare your material moisture data, production target, and available fuel information before selecting a fertilizer dryer for SOP. These details will help determine a more suitable dryer size and heating configuration.
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