Your materials

With our Ecophos HCI-based solution, the GetMoreP  process and Prayon’s five phosphoric acid production processes, we have a solution to turn your materials into high value by-products.

As an actor in the chemical industry, do you have excess Hydrochloric acid (HCl)?

Hydrochloric acid (HCl) is a by-product from several industries like Caustic soda (NaOH), Potassium sulphate (SOP) and some polymers (Polyurethane).


If you are active in the metal industry or other sectors, you can valorize your sulfuric acid (H2SO4) (waste) in phosphate production independently of its content in impurities and low concentration.

At a high concentration (> 70%, typically 96% to 98.5%), Prayon offers five processes that may be of interest for you.

At a low concentration (< 12%, typically 5-10%), Prayon has developed a solution that allows you to recover P2O5 to produce DCP.

All Prayon phosphoric acid and DCP production processes are perfectly suited to use low to high grade phosphate rocks.

Based on the chemical analysis of the rock and in-depth discussion, we will guide you to the optimum process. During the pilot test phase, the process conditions will be adjusted to improve P2O5 recovery and filtration rate with regards to the type of rock impurity.

Considering low-grade rocks contain a high level of impurities, a chemical beneficiation will be required to extract the P2O5. Prayon offers two unique process solutions producing DCP as intermediate or final product.

The growing scarcity of phosphorous highlights the importance to efficiently and sustainably manage this natural resource. Prayon innovative technologies enables to recover phosphates from various sources using waste from phosphate rock beneficiation, recycling phosphoric acid industrial waste or recycling phosphate from sewage sludge incineration ash.

Process Fly Ash

Phosphoric acid can be purified to produce technical or food grade acid or used as a raw material to produce phosphate salts.

It can also be used to process secondary phosphates (fly and bone ashes).