Potash Ore — Sylvinite Feedstock for MOP Refining
Run-of-mine potash ore (sylvinite) contains 12–20% K2O mixed with halite (NaCl) and insoluble clay minerals, feeding flotation and crystallization plants that produce standard MOP 60% and 62% K2O. Direct export of ore rather than refined product suits integrated processors building new refining capacity near port. Particle size 0–25 mm with moisture below 6%. From 25,000 MT vessel cargo.
Composition & Limits
- FOB
- CFR
- CIF
- Industrial
- Metallurgy
- Mineral processing
Processing & Shipment
Sylvinite ore is crushed and deslimed at the mine before export, reducing insolubles to 8% max for efficient downstream flotation. Bulk vessel loading at dedicated potash terminals; typical voyage from Baltic or Dead Sea origins to Asian processing hubs. NaCl content up to 65% is normal for sylvinite — the refining step separates KCl from NaCl.
FAQ
What recovery rate should a new MOP plant expect from this ore?
Modern flotation plants achieve 80–85% K2O recovery from 14–18% K2O ore. Crystallization routes on higher-grade ore (18–20% K2O) can reach 90%+ recovery at higher capital cost.
How does ore K2O grade affect refining economics?
Each 1% increase in ore K2O grade reduces energy consumption per tonne of finished MOP by approximately 3–4%. Sourcing 18%+ ore versus 12% ore significantly improves plant margins over the mine life.
Is potash ore suitable for direct soil application?
No. Run-of-mine ore contains 60–65% NaCl which would salinize soil. Ore must be refined to MOP or SOP before agricultural use.