Iron Sulfide Granules Soil Ecological Conditioner for Acidic & Heavy Metal Contaminated Soil

Proven in 650,000 m² mine restoration (2018–2024) to neutralize acidity, immobilize heavy metals, and rebuild fertile soil.

Product Overview

Pyrite (FeS₂) Granules – Soil Ecological Amendment

• Purity: ≥ 90% FeS₂
• Particle Size: 2–5 mm (granular, easy to spread)
• Bulk Density: 1.8–2.2 g/cm³
• Key Elements: Fe (45–50%), S (40–45%), trace minerals (Mn, Zn, Cu)
• pH Adjustment Range: 3.5 → 6.5–7.0 (stable for 3–5 years)
• Heavy Metal Immobilization: Reduces Cr⁶⁺ leaching from 120 mg/L to <0.3 mg/L (540-day test)

Why It Works

1. Slow oxidation releases mild sulfuric acid → buffers extreme alkalinity; for acidic soil, Fe²⁺/Fe³⁺ stabilizes pH at 6.5–7.0
2. Iron-sulfur complexes bind Cr⁶⁺, Pb, Cd → insoluble, non-toxic forms
3. Fe & S feed soil microbes → organic matter decomposition, nutrient release
4. Long-lasting: One application = 3–5 years of stable soil health

Key Benefits

1. Fix Acidic Soil (pH 2.5–4.5) – Neutralize to 6.5–7.0

• Pain: Stunted roots, yellow leaves, 50–80% yield loss
• Solution: Pyrite slowly raises and stabilizes pH at optimal crop range
• Result: 90%+ germination rate, healthy root development

2. Immobilize Toxic Heavy Metals (Cr⁶⁺, Pb, Cd)

• Pain: Contaminated crops, food safety risks, land abandonment
• Solution: Fe²⁺ reduces Cr⁶⁺→Cr³⁺; sulfide binds Pb/Cd → inert solids
• Result: Cr⁶⁺ leaching <0.3 mg/L (meets international standards)

3. Long-Term Effect (3–5 Years) – No Frequent Reapplication

• Pain: Lime/chemicals last only 6–12 months; high labor & material cost
• Solution: Slow-release mineral → steady action for years
• Result: 70% lower annual cost vs. traditional amendments

4. Boost Soil Fertility & Crop Yield

• Pain: Poor nutrient uptake, low organic matter, weak soil structure
• Solution: Fe/S nutrition + microbial activation → better nutrient cycling
• Result: 15–30% yield increase for rice, corn, vegetables, fruit trees

5. Safe & Eco-Friendly – No Secondary Pollution

• Pain: Chemicals kill beneficial microbes; risk of re-pollution
• Solution: Natural mineral (pyrite ore) → non-toxic, biodegradable
• Result: Restores soil ecosystem; supports sustainable agriculture

Real-World Case Study

Yunfu Pyrite Mine Restoration (China, 2018–2024)

• Problem: Mine soil pH 3.5, bare slopes, no vegetation
• Treatment: Pyrite granules + organic compost
• Results:
  • Soil pH stabilized at 6.8–7.0 (neutral)
  • 650,000 m² re-vegetated (black ryegrass, pine, acacia)
  • 1.3 million seedlings planted; 95% survival rate
  • Now a green, ecological park

Application Scenarios

• Acidic farmland (pH <5.5): rice, wheat, corn, vegetables
• Heavy metal contaminated soil: industrial sites, mining areas, orchards
• Mine reclamation & slope restoration
• Orchard soil improvement: lychee, citrus, apple (prevents chlorosis)
• Urban greening & ecological restoration

Usage & Dosage

• For acidic soil (pH 3.5–5.5): 2–3 tons per hectare (1.5–2 lbs per m²)
• For heavy metal contaminated soil: 3–5 tons per hectare
• Application: Spread evenly on soil surface → plow 15–20 cm deep → water lightly
• Best time: Before planting (2–4 weeks in advance)

FAQ

Q: Is pyrite safe for organic farming?

A: Yes. Natural mineral, no chemical additives; approved for organic use in most regions.

Q: How long until I see results?

A: pH stabilizes in 4–8 weeks; crop yield improves in 1–2 growing seasons.

Q: Will it leach into groundwater?

A: No. Low solubility; heavy metal complexes are insoluble. Tested safe for 540 days.

Q: Can it be used with other fertilizers?

A: Yes. Compatible with organic compost, manure, and NPK fertilizers.

CTA

Stop Wasting Money on Short-Lived Fixes – Choose Pyrite for Lasting Soil Health

✅ Free Sample Available (1kg for testing)

✅ Bulk Discounts (MOQ: 20 tons)

✅ Technical Support (soil testing & application guide)

Contact Us Today for a Custom Soil Solution

If you have any questions, needs, or cooperation intentions, please feel free to contact us through the following ways:

• Email: c32917930@gmail.com (Response within 24 hours)
• WhatsApp: +86 18006417081 (Real-time online consultation)

Our professional team will provide you with one-on-one service, answer your questions, and assist you in completing the purchasing process.