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Upgraded rock - Ecophos

About

Modular HCl-based process to upgrade your raw material

Prayon has the widest experience available on the market in processing high-impurity phosphate rocks.

Depending on the type and quantity of impurities, traditional phosphoric acid processes can meet the following issues with low-grade rocks :

  • Filtration affected by the high viscosity
  • Formation of gel at the concentration stage
  • Post precipitation and scaling

Therefore, Ecophos as part of Prayon Technologies developed the unique “Ecophos” process to recover P2O5 from low-grade phosphate rocks by adding diluted hydrochloric acid. HCl specific consumption can be reduced by addition of sulfuric acid in a final module to recycle HCl and generate a pure gypsum. This process provides an outstanding raw material for any phosphoric acid plant: the DCP “super-rock”.

Ecophos is a chemical beneficiation process with a recovery efficiency far above any traditional beneficiation plant (up to 90%). It produces a DCP “super-rock” of high quality (up to 41% P₂O₅) leading to the following benefits using it as raw material instead of phosphate rock.

Advantages
What are the benefits of using DCP super-rock upgraded through the Ecophos Process to feed your Phosphoric Acid plant?

Significant increase of capacity for an existing plant

Up to 200% of the initial capacity

High-quality acid product

High P₂O₅, low MER, low solids, and low heavy metals content

Valuable phospho-gypsum

Low P₂O₅, low Fluorine and low radioactivity

Low consumptions

Steam, sulfuric acid and phosphate rock

Low maintenance

Reduction of the scaling, abrasion, and corrosion

Improvement of the environmental footprint

Fluorine emissions
For more information

Download our brochure

Brochure: Ecophos - Prayon Technologies
EN

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