Humic Acid Liquid Fertilizer Production Line – A Sustainable Path to High-Yield Farming

Introduction to Humic Acid Liquid Fertilizer Production Line

A humic acid liquid fertilizer production line is a modern solution for producing nutrient-rich, plant-accessible fertilizer that promotes soil health, increased crop yields, and long-term agricultural sustainability. Derived from natural sources such as weathered lignite, peat, or composted organic matter, humic acid is a proven soil conditioner that enhances nutrient absorption and promotes root development. By converting humic acid-rich raw materials into a stable liquid formulation, the line ensures farmers receive an easy-to-apply and highly effective product.

LANE offers turnkey humic acid liquid fertilizer production lines customized for various production capacities, ensuring consistent production of high-quality liquid fertilizer for both small-scale and industrial operation.

Why Humic Acid Liquid Fertilizer Matters

Humic acid plays a crucial role in soil regeneration and plant nutrition. Its benefits include:

  • Improved nutrient absorption by chelating essential minerals.

  • Enhanced soil structure by increasing water retention and aeration.

  • Stimulated microbial activity that promotes healthy soil ecosystems.

  • Increased crop resilience against drought, pests, and diseases.

For these reasons, the demand for humic acid liquid fertilizer production lines has grown significantly in global markets, especially in regions aiming to reduce dependence on chemical fertilizers.

Raw Materials for Humic Acid Liquid Fertilizer Production

A successful humic acid liquid fertilizer production line starts with quality raw materials. Common sources include:

Raw MaterialDescriptionNutrient Value
LeonarditeHigh-purity source of humic and fulvic acids50–70% humic acid content
PeatOrganic matter rich in carbon compoundsEnhances soil organic matter
Composted manureNutrient-rich organic wasteImproves microbial diversity
Plant-based compostSustainable organic waste recyclingBalanced nutrient profile

Selecting the right raw material directly impacts the final product’s quality, stability, and performance.

How the Humic Acid Liquid Fertilizer Production Line Works – Step-by-Step

A humic acid liquid fertilizer production line follows a systematic process designed to extract, purify, blend, and package nutrient-rich liquid humic acid fertilizers. Each stage plays a critical role in ensuring the final product’s quality, stability, and effectiveness.

Step 1: Raw Material Selection & Pre-Treatment

The process starts with selecting humic-rich raw materials such as leonardite, peat, lignite, or composted organic matter. These are tested for humic acid content and impurities before processing.

  • Equipment Used:

    • Front-End Loader (for raw material handling)

    • Feeding Hopper with Conveyor

    • Compost Screening Machine or Vibrating Screener (to remove oversized particles, stones, and debris)

  • Goal: Ensure only high-quality, uniform raw material enters the production line.

Step 2: Crushing & Particle Size Reduction

The screened raw material is then reduced to fine particles for better extraction efficiency.

  • Equipment Used:

  • Goal: Increase the surface area for faster and more complete extraction of humic acid.

Step 3: Humic Acid Extraction

The crushed raw material is fed into stainless steel extraction tanks. Depending on the formulation, alkaline extraction (using potassium hydroxide or sodium hydroxide) or hot water extraction is applied to dissolve humic and fulvic acids.

  • Equipment Used:

    • Stainless Steel Extraction Tank with Agitator

    • Industrial Steam or Electric Heating System (if hot extraction is used)

  • Goal: Maximize humic acid yield while preserving beneficial organic compounds.

Step 4: Solid-Liquid Separation

Once extraction is complete, the mixture is separated to remove undissolved solids.

  • Equipment Used:

    • Screw Press Separator or Decanter Centrifuge

  • Goal: Obtain a clear humic acid-rich liquid for further processing.

Step 5: Filtration & Purification

The extracted liquid is passed through a dual filter to remove fine particles and impurities.

  • Equipment Used:

    • Coarse Mesh Filter (primary)

    • Fine Cartridge Filter (secondary)

  • Goal: Achieve a clean, clog-free product that is suitable for drip irrigation and foliar spraying.


Step 6: Blending & Nutrient Fortification

The filtered humic acid liquid is blended with micronutrients (zinc, boron, iron, manganese) or other bio-stimulants to enhance its performance.

  • Equipment Used:

    • Horizontal Mixer or Paddle Mixer

    • Automatic Nutrient Dosing System

  • Goal: Create a balanced, nutrient-rich fertilizer tailored to market needs.

Step 7: pH Adjustment & Stabilization

To ensure long shelf life and optimal compatibility with crops, the liquid’s pH is adjusted (typically between 8.5–10 for humic acid solutions) and stabilizers are added.

  • Equipment Used:

    • In-line pH Control System

    • Chemical Dosing Pump

  • Goal: Maintain product stability during storage and transport.

Step 8: Quality Control Testing

Samples from each batch are tested for humic acid content, pH, electrical conductivity (EC), and heavy metal levels.

  • Equipment Used:

    • Laboratory pH Meter, EC Meter

    • Spectrophotometer for humic acid content analysis

  • Goal: Ensure each batch meets quality and regulatory standards.

Step 9: Storage

The finished product is stored in sealed stainless steel holding tanks to prevent microbial contamination and sedimentation before packaging.

Step 10: Packaging

Finally, the humic acid liquid fertilizer is filled into bottles, drums, or IBC totes according to customer requirements.

  • Equipment Used:

  • Goal: Deliver a market-ready product that is easy to handle and transport.

A humic acid liquid fertilizer production line transforms raw organic matter into a clean, stable, and nutrient-rich liquid fertilizer through precise extraction, purification, blending, and packaging. With the right design—like those provided by LANE—producers can achieve high yields, consistent quality, and cost-efficient operations for both domestic and export markets.

Why Choose LANE for Your Humic Acid Liquid Fertilizer Production Line

Building a humic acid liquid fertilizer production line not only requires purchasing individual equipment, but also a complete system, optimized workflow, and reliable technical support. LANE offers turnkey solutions covering all stages, from custom factory layout design to equipment manufacturing, on-site installation, operator training, and after-sales service. 

The characteristics of our production line: 

Customized production capacity design - from pilot-scale to an industrial chemical plant with an annual output of over 10,000 tons. 

High-quality materials - corrosion-resistant stainless steel, durable and long-lasting, ensuring hygiene in production. 

Automation and efficiency - Advanced metering, mixing and filtration systems can reduce labor costs and ensure consistency between batches. 

Global project experience - Successfully installed in over 20 countries/regions, serving the organic agriculture and traditional agriculture sectors. 

Fully compliant - CE certification and adherence to international quality standards ensure that your products have the necessary export qualifications. 

By choosing LANE, you will obtain a partner that not only provides equipment but also ensures that your production line operates at its best performance. This enables you to produce high-quality humic acid liquid fertilizers that meet market demands, maximize profitability, and support sustainable agriculture.

A humic acid liquid fertilizer production line is more than a manufacturing setup—it’s an investment in sustainable agriculture, improved crop productivity, and long-term soil health. With LANE’s expertise, high-quality equipment, and global project experience, businesses can produce premium humic acid fertilizers that meet the needs of modern farming. LANE stands ready to provide turnkey solutions that transform raw organic materials into market-ready products, helping you lead in the growing biofertilizer industry.

For more details, please feel free to contact us.

Henan Lane Heavy Industry Machinery Technology Co., Ltd.

Email: sales@lanesvc.com

Contact number: +86 13526470520

Whatsapp: +86 13526470520

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