A soil conditioner production line is an industrial system designed to manufacture products that improve soil physicochemical properties and promote crop growth. Its design must integrate raw material characteristics, target product applications, and environmental protection requirements. Below are the core components and technical highlights of a typical production line:

I. Core Modules of the Production Line

1. Raw Material Pretreatment System
   1. Crushing & Screening: Crush bulk raw materials (e.g., limestone, phosphate rock) to 80-120 mesh to ensure mixing uniformity.
   2. Batching & Metering: Use electronic belt scales or screw metering devices for precise multi-component proportioning (e.g., NPK elements, organic matter, microbial inoculants).
2. Mixing & Reaction System
   1. Horizontal Mixers: Twin-shaft paddle mixers ensure material homogeneity ≥98%.
   2. Chemical Activation: For mineral conditioners (e.g., calcium-magnesium-silicate fertilizers), activate active ingredients via acidolysis, calcination, or other processes.
3. Forming Process
   1. Granulation Technologies:
      1. Pan Granulation: Suitable for organic fertilizers, with a capacity of 3-5 tons/hour.
      2. Extrusion Granulation: Used for mineral conditioners, producing high-strength granules via die extrusion.
4. Drying & Cooling
   1. Rotary Dryers: Adjustable hot air temperature (120-200°C), equipped with cyclone + water film dust removal systems.
5. Screening & Coating
   1. Screens: Graded screens (2-5mm) separate qualified granules from dust.
   2. Coating Process: Apply humic acid/oil coating agents to enhance slow-release properties (for functional conditioners).
6. Automated Packaging
   1. Quantitative Packing Sealer: Quantitative packing scales support 5-50kg/bag specifications, equipped with metal detectors and auto-sewing devices.
   2. Palletizing Robots: Enable automated pallet stacking to reduce labor dependency.

II. Key Equipment Selection References

 

Equipment Name	Technical Parameters Example	Applicable Scenarios
Crusher	Capacity 5-20 tons/hour, output size ≤3mm	Primary crushing (limestone, gypsum)
Twin-Shaft Paddle Mixer	Volume 1-5m³, mixing time 3-5 minutes	Multi-component dry powder mixing
Rotary Drum Granulator	Diameter 1.2-3m, inclination 45°	Organic-inorganic compound conditioner
Pulse Baghouse	Filtration area 200-1000㎡	Dust control (emission ≤30mg/m³)
Palletizing Robot	Load 500-1000kg, cycle time ≤60s	Automated finished product warehouse

III. Process Upgrade Directions

1. Customized Product Design:
   • Acidic Soil Conditioner: Limestone + phosphogypsum + humic acid (pH adjustment + water retention)
   • Saline-Alkali Soil Ameliorant: Gypsum + biochar + microbial inoculants (desalination + fertilizer retention)
   • Heavy Metal Immobilizer: Red mud + sepiolite + sulfides (adsorption + fixation)

Note: Actual design requires process adaptation based on raw material composition (e.g., calcium content, organic matter) and target soil issues (acidification, compaction, salinization). Collaboration with agricultural universities or specialized equipment manufacturers is recommended for customized solutions.