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Gypsum Fertilizer Manufacturing: How to Produce High-Quality Fertilizer from Gypsum

02/28/2026

With the growing demand for soil conditioning and secondary nutrient fertilizers, Gypsum Fertilizer Manufacturing has become a strategic investment direction for fertilizer producers worldwide. Agricultural gypsum not only supplies calcium (Ca ≥ 18–23%) and sulfur (S ≥ 14–18%), but also improves soil permeability, reduces sodium adsorption ratio (SAR), and enhances root-zone structure.

Why Gypsum Matters in Modern Agriculture

Agricultural gypsum (CaSO₄·2H₂O) provides:

  • Calcium (CaO equivalent: 22–32%) for cell wall development

  • Sulfur (S content: 14–18%) for protein synthesis

  • Soil flocculation in sodic soils (ESP reduction efficiency up to 30–50% depending on soil conditions)

  • Improved water infiltration rates by 20–40% in compacted clay soils

Typical application rates range from 500 kg/ha to 2,000 kg/ha, depending on soil type and salinity level.

Gypsum Fertilizer Manufacturing Process Flow

A standard Gypsum Fertilizer Manufacturing plant can be designed with capacities ranging from 5 TPH (tons per hour) to 30 TPH, equivalent to 30,000–200,000 tons per year depending on operating hours.

1. Raw Material Handling and Crushing

Feed size: ≤ 300 mm gypsum rock
Output size after crushing: ≤ 20–30 mm

Equipment configuration:

  • Heavy-duty jaw crusher (capacity: 10–50 TPH)

  • Hammer crusher for secondary reduction

  • Belt conveyors with dust collection system

LANE designs enclosed crushing workshops equipped with pulse-jet bag filters to maintain dust emissions below 30 mg/Nm³, meeting international environmental standards.

2. Grinding System

For powder-grade gypsum fertilizer:

  • Final fineness: 80–200 mesh (180–75 μm)

  • Mill capacity: 3–20 TPH

  • Power consumption: 18–35 kWh per ton

Recommended equipment:

  • Raymond mill or vertical roller mill

  • Cyclone separator + pulse dust collector

  • Automatic feeding control system

The grinding system in Gypsum Fertilizer Manufacturing directly impacts solubility and field performance. LANE integrates frequency-controlled feeders and online particle size monitoring to ensure uniform fineness.

3. Granulation Section (Optional but Recommended)

For better storage and mechanized spreading, granular gypsum fertilizer is preferred.

Disc Granulator

  • Capacity: 1–6 TPH

  • Granule size: 2–4 mm

  • Balling rate: ≥ 85%

Rotary Drum Granulator

  • Capacity: 5–20 TPH

  • Moisture control: 12–15% during granulation

  • Granule size uniformity: ±0.5 mm

Double Roller Extrusion Granulator

  • Capacity: 1–8 TPH

  • No drying required

  • Energy consumption reduced by 30–40%

LANE selects the granulation method based on raw material moisture, investment budget, and local climate conditions.

4. Drying and Cooling System

For wet granulation processes:

Rotary Dryer

  • Inlet moisture: 12–15%

  • Outlet moisture: ≤ 2%

  • Heat source: natural gas, diesel, coal, or biomass

  • Thermal efficiency: ≥ 65%

Rotary Cooler

  • Outlet temperature: ≤ 40°C

  • Improves granule hardness (≥ 15 N compressive strength)

LANE integrates hot air furnace, induced draft fans, and intelligent temperature sensors to stabilize moisture levels and reduce fuel consumption by up to 10–15%.

5. Screening, Coating, and Packaging

  • Vibrating screen efficiency: ≥ 95%

  • Oversize/undersize recycling rate: automatic closed-loop

  • Coating rate: 0.2–0.5% anti-caking agent

  • Packaging range: 25 kg, 50 kg, 1-ton jumbo bags

  • Packing accuracy: ±0.2%

Automated packaging lines can reach 300–500 bags/hour, reducing labor demand significantly.

LANE’s Integrated Gypsum Fertilizer Manufacturing Solutions

Unlike equipment-only suppliers, LANE provides full EPC (Engineering, Procurement, Construction) services for Gypsum Fertilizer Manufacturing projects.

1. Factory Layout & Process Design

LANE offers:

  • 2D/3D plant layout drawings

  • Civil foundation design guidance

  • Material flow optimization

  • Power load calculation reports

  • Dust control and ventilation design

Typical land requirement for a 100,000 TPY plant: 8,000–15,000 m², depending on configuration.

2. Modular & Scalable Plant Engineering

LANE designs scalable production lines:

  • Phase 1: 50,000 TPY

  • Phase 2 expansion to 100,000–150,000 TPY

  • Reserved space for additional granulation or blending units

This modular concept reduces initial capital expenditure and allows future expansion without major reconstruction.

Phosphate Rock Fertilizer Process

3. Project Delivery Capability

LANE’s delivery scope includes:

  • Equipment manufacturing (carbon steel or stainless steel contact parts)

  • Pre-installation testing before shipment

  • On-site installation supervision

  • Commissioning & operator training

  • Production formula optimization

Typical project timeline:

  • Engineering design: 20–30 days

  • Equipment manufacturing: 60–90 days

  • Installation & commissioning: 30–45 days

Total project cycle: approximately 4–6 months.

4. Intelligent Control System

Modern Gypsum Fertilizer Manufacturing plants supplied by LANE can be equipped with:

  • PLC-based centralized control

  • Touchscreen HMI interface

  • Real-time temperature and moisture monitoring

  • Production data recording

  • Remote troubleshooting support

Automation reduces manual error and increases production stability by over 15%.

Environmental Compliance and Sustainability

LANE integrates:

  • Pulse bag dust collectors

  • Sealed conveyors

  • Low-NOx burners

  • Waste heat recycling options

Industrial by-product gypsum utilization also helps reduce landfill waste and supports circular economy principles.

Partnering with LANE

High-efficiency Gypsum Fertilizer Manufacturing requires not only reliable equipment but also professional engineering design, process optimization, and project management expertise.

With capacities ranging from 5 TPH to 30 TPH, precise moisture control (≤ 2%), granule strength ≥ 15 N, and full automation options, LANE delivers turnkey gypsum fertilizer plants tailored to regional market needs. From factory layout design to commissioning and operator training, LANE ensures that every project achieves stable operation, controlled costs, and long-term profitability.

If you are planning to invest in Gypsum Fertilizer Manufacturing, selecting an experienced engineering partner with proven factory design and delivery capability is the key to project success.

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