Overview of NPK Fertilizers
For agricultural production, NPK fertilizers provide essential macronutrients for crop growth. NPK fertilizers can be customized in various ratios (e.g., 20-10-10 for leafy crops and 10-20-20 for root vegetables). NPK fertilizers have many advantages over single nutrient fertilizers: balanced nutrition and reduced application frequency.
How are NPK fertilizers produced? Today, Zhengzhou Chengxiang Heavy Industry will introduce you to a Small Scale NPK Fertilizer Production Line. If you are a fertilizer manufacturer, you can learn about it. If necessary, you can come to Chengxiang Heavy Industry to choose.
The market demand for small-scale production of NPK has led to a growing interest in localized fertilizer supply chains. Small farmers can save costs compared to commercial brands. Organic waste (such as manure, compost) can be flexibly incorporated into NPK mixtures.
Design of a small NPK production line
1. Key steps
(1) Raw material preparation: Storage silos for urea, ammonium phosphate, potassium chloride and fillers (such as dolomite).
(2) Mixing system: Horizontal or vertical mixer for uniform powder mixing.
(3) Granulation 1: Disc granulator: low cost, suitable for wet granulation.
Granulation 2: Double Roller Press Granulator, no drying required.
(4) Drying and cooling: Rotary dryer to reduce moisture; Cooler to stabilize granules.
(5) Screening and coating: Vibrating screen removes particles with oversized particle size to obtain particles with the diameter required by the customer; Coating roller is coated with anti-caking agent.
(6) Packaging: Semi-automatic or fully automatic packaging machine (capacity 500g-50kg).
2. Production capacity
(1) Typical output: 1-10 tons/hour.
(2) Space requirements: Approximately 200-800 square meters for complete setup.
Production process flow
(1) Formula: Calculate the NPK ratio based on crop requirements.
(2) Crushing and mixing: Crush the raw materials; stir for 10-15 minutes.
(3) Granulation:
A. Wet method: Add a binder (such as water or starch) before disc granulation, and use a binder (such as lignin sulfonate) to improve the strength of the pellets. Then use Chengxiang Heavy Industry’s disc granulation production line for granulation.
B. Dry method: Granulate through Chengxiang Heavy Industry’s double-roll extruder production line.
(4) Drying: Reduce moisture to <5% at 80-120°C.
(5) Cooling: Ambient air cools the pellets to 30-40°C.
(6) Screening: Vibrating screen removes particles with too large a particle size to obtain particles with the diameter required by the customer, and the particles with too small a size are recycled into the mixer.
(7) Quality control: Test nutritional content (e.g., by spectrophotometry) and pellet hardness.
Economic and environmental considerations
(1) Cost analysis
Initial investment: $20,000-100,000 (depending on the level of automation and the number of complete equipment required by the customer).
Return on investment: half a year to one year, with stable demand.
(2) Sustainability benefits
Potential for integrating biowaste (such as poultry litter) into NPK mixtures.
Challenges and solutions
Regulatory compliance: Obtain local fertilizer certification.
Maintenance: Train employees on equipment maintenance to avoid downtime.
Chengxiang Heavy Industry Case Successful：small NPK production line factory in Russia
Annual output: about 5,000 tons. Serves more than 800 small farmers in the production and supply of fertilizers for corn, tea and horticulture.
Advantages of Chengxiang Heavy Industry’s NPK Fertilizer production line
Precise formula mixing control driven by artificial intelligence; automation and intelligence of the production process; can be applied to workshop environments in remote areas, with strong adaptability.
Small scale NPK fertilizer production line fill the gap between industrial supply and localized agricultural demand. With modular design and scalable technology, these systems are very important for food security in developing economies.
Chengxiang Heavy Industry is a professional fertilizer equipment manufacturer with 30 years of development. It supplies organic fertilizer production lines, compound fertilizer production lines, BB fertilizer production lines of various models and scales to global customers, and various models of single-machine organic fertilizer equipment, such as fertilizer granulators, organic fertilizer fermentation equipment, crushing equipment, mixing equipment, screening equipment, drying and cooling equipment, batching and packaging equipment, forklift silos, solid-liquid separators, conveying equipment, organic fertilizer deodorization systems, etc.
If you need fertilizer equipment, you can consult our factory. Welcome global customers to visit our factory and purchase equipment.
