From phosphate mines, phosphate rock is produced and shipped to fertilizer industries. The fertilizer industry is traditionally using large amounts of energy when producing highly concentrated phosphoric acid from the phosphate rock. The phosphoric acid is thereafter used as a raw material for different types of phosphate fertilizers.
A substantial part of the fertilizer industry's operational cost (energy) comes from the need concentrating for phosphoric acid through water evaporation. The processes also often lack the ability to remove heavy metals, such as, cadmium from the end product.
The CleanMAP Technology enables cost effective production of pure and well defined mono ammonium-phosphate (MAP) or di-ammonium phosphate (DAP), of technical grade(i.e.fully water soluble). The cadmium content in the ammonium phosphate product is below 1 mg Cd/Kg P. The CleanMAP technology can be integrated parallel in existing production line, replacing existing production line or in new plants.
- Reduced operational costs are mainly due to exclusion of the need for steam for acid concentration, and no need for complex effluent gas treatment
- Reduced maintenance costs are mainly due to no need for sludge and scale removal from evaporation systems
- Energy savings of ca 5 ton steam/ton phosphorus (ca 2.2 ton steam per ton P2O5) is achieved compared to state-of-the-art production of fertilizer grade ammonium phosphate production
- Enables direct production of MAP or DAP of technical grade
- Phosphorus concentration in MAP of technical grade is about 20 percent higher than in ammonium phosphates of fertilizer grade.
- More energy-efficient than state-of-the-art
- Separation of pollutants, such as, cadmium, uranium and fluorine is achieved
- Low contamination of final products - The cadmium content in the ammonium phosphate is below 1 mg Cd/Kg P (<0.5 mg Cd /kg P2O5)
- Less energy demanding than state-of-art