फॉस्फेट उर्वरक उत्पादन (सुपरफॉस्फेट और DAP)

वैश्विक फसल उत्पादन के लिए मिट्टी के फॉस्फोरस को अनलॉक करना

Agriculture & Fertilizers Global Industrial Scale $25 billion

अवलोकन

Phosphate fertilizers are produced by treating phosphate rock (fluorapatite) with sulfuric acid to create single superphosphate (SSP), or with phosphoric acid to create triple superphosphate (TSP) and diammonium phosphate (DAP). Phosphorus is essential for plant energy transfer (ATP), root development, and seed formation. Global phosphate rock reserves are concentrated in Morocco (70%), and concerns about peak phosphorus supply have prompted efforts to improve phosphorus recycling from agricultural and wastewater sources.

रासायनिक प्रक्रिया

For SSP: finely ground phosphate rock is mixed with 70% sulfuric acid in a continuous mixer (den process). The mixture sets and cures for 3-6 weeks. For DAP: phosphate rock is digested with sulfuric acid to produce phosphoric acid (wet process), which is then neutralized with ammonia. The slurry is granulated, dried, and screened.

Ca5(PO4)3F + 5H2SO4 + 10H2O -> 3H3PO4 + 5CaSO4.2H2O + HF (wet process for phosphoric acid)
H3PO4 + 2NH3 -> (NH4)2HPO4 (DAP production)

कच्चा माल

  • Phosphate rock (Ca5(PO4)3F, fluorapatite) — Mining (Morocco, China, US, Russia) (Phosphorus source (30-37% P2O5))
  • Sulfuric acid (H2SO4) — Contact process from sulfur (Acid digestion agent)
  • Ammonia (NH3) — Haber-Bosch process (Nitrogen source for DAP/MAP)

अंतिम उत्पाद

  • Single superphosphate (SSP) — Direct-application phosphorus fertilizer (16-20% P2O5, also provides sulfur and calcium)
  • Diammonium phosphate (DAP, (NH4)2HPO4) — High-analysis NP fertilizer (18% N, 46% P2O5)
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Environmental Impact

Phosphate mining disturbs large land areas and generates phosphogypsum waste (5 tons per ton of P2O5), which contains naturally occurring radioactive materials (NORM). Phosphorus runoff from overfertilized fields causes eutrophication of lakes and rivers. Fluoride and cadmium impurities in phosphate rock require management.

सुरक्षा संबंधी विचार

हालिया नवाचार

Slow-release phosphorus fertilizers reduce runoff losses.
Phosphorus recovery from wastewater (struvite crystallization) creates a circular economy.
Biochar and mycorrhizal inoculants improve plant phosphorus uptake efficiency, reducing fertilizer requirements.

उत्पादन पैमाना

50000000

टन/वर्ष

$25 billion

बाज़ार मूल्य

%(name)s में और Agriculture & Fertilizers

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Frequently Asked Questions

What industry uses फॉस्फेट उर्वरक उत्पादन (सुपरफॉस्फेट और DAP)?
फॉस्फेट उर्वरक उत्पादन (सुपरफॉस्फेट और DAP) is used in the agriculture & fertilizers sector at global industrial scale scale.
What process is involved in फॉस्फेट उर्वरक उत्पादन (सुपरफॉस्फेट और DAP)?
For SSP: finely ground phosphate rock is mixed with 70% sulfuric acid in a continuous mixer (den process). The mixture sets and cures for 3-6 weeks. For DAP: phosphate rock is digested with sulfuric acid to produce phosphoric acid (wet process), which is then neutralized with ammonia. The slurry is
What is the economic significance of फॉस्फेट उर्वरक उत्पादन (सुपरफॉस्फेट और DAP)?
फॉस्फेट उर्वरक उत्पादन (सुपरफॉस्फेट और DAP) has a market value of $25 billion and annual production of 50,000,000 tons.
What is the environmental impact of फॉस्फेट उर्वरक उत्पादन (सुपरफॉस्फेट और DAP)?
Phosphate mining disturbs large land areas and generates phosphogypsum waste (5 tons per ton of P2O5), which contains naturally occurring radioactive materials (NORM). Phosphorus runoff from overfertilized fields causes eutrophication of lakes and rivers. Fluoride and cadmium impurities in phosphate
What raw materials are used in फॉस्फेट उर्वरक उत्पादन (सुपरफॉस्फेट और DAP)?
The main raw materials include: Phosphate rock (Ca5(PO4)3F, fluorapatite), Sulfuric acid (H2SO4), Ammonia (NH3).