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Dihydrate

About

The best-seller process to produce phosphoric acid

The Prayon Dihydrate (DH) Process is widely used by producers due to its reliability, simplicity of operation and the use of proven equipment (Profile). 

It consists in the attack of the phosphate rock under dihydrate conditions cooled by a specific flash cooler designed to limit the scaling. The square compartment reactor fitted with Prayon agitators provides the best available conditions on the market in terms of lifetime, maintenance and reaction efficiency.

Dihydrate slurry is filtered on a Prayon tilting pan filter to recover the phosphoric acid. Depending on the rock processed, the ex-filter acid strength is typically 25-29% P2O5 and the typical P2O5 recovery efficiency is 94-95%.

Advantages
Why should we select Prayon Dihydrate Process?

Low investment and maintenance costs

Flexibility to process all types of phosphates

Sedimentary and igneous

Possibility of feeding phosphate slurry

From wet grinding or pipeline supply

Easily-controlled water balance

Recycling of pond water, reduction and/or elimination of liquid effluent

Easy to operate after training

Recommended
When should Prayon Dihydrate Prayon be applied?

When low- to medium-cost rock is accessible

Where low-cost energy is available

Steam and electricity

Where gypsum disposal is possible

Get in touch with our experts

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