Tag: Prayon

The latest developments in the recovery and commercialisation of fluorosilicic acid, rare earth elements (REEs) and uranium co-products associated with phosphoric acid production.

The delivery of nitrogen in nitrate form can deliver superior yields and quality in arable, fruit and vegetable crops. Because of this, production and consumption of the principal nitrate fertilizers – ammonium nitrate (AN), calcium ammonium nitrate (CAN), urea ammonium nitrate (UAN), potassium nitrate (NOP) and calcium nitrate (CN) – continue to grow.

Vacuum filtration is a key process step in phosphoric acid production. We highlight the main equipment options and recent project installations.

Phosphogypsum is finding increasing use in plaster and cement manufacture, roadbed construction and afforestation. We look at how previously unwanted solid waste generated by the phosphate industry is being turned into a valued resource.

Prayon’s Hadrien Leruth and Marc Sonveaux highlight the latest phosphate production developments at the company – and share their experience of how innovative ideas are validated, industrialised and turned into commercially-viable technologies.

Fertilizer International presents a global round-up of phosphate rock, phosphoric acid and finished phosphates projects.

Recent protests in Belarus have triggered a wave of share price volatility, London’s Financial Times reported on 18th August.

DuPont Clean Technologies has announced the successful startup and performance test of a 300,000 t/a STRATCO® alkylation unit licensed at the Hengli Petrochemical Company’s new refinery complex on Changxing Island in the Harbour Industrial Zone, China. The new alkylation unit enables Hengli to produce high-quality alkylate from a 100% isobutylene feed stream, catalysed by sulphuric acid. This first-of-a-kind unit was developed through DuPont research into the best ways to maximise product octane and minimise end point with this feedstock. Hengli had awarded DuPont the contract for the new alkylation unit as well as a MECS® sulphuric acid regeneration unit in 2015.

Demand from horticulture has seen the use of water-soluble phosphates rise globally to almost one million tonnes annually. We assess the market and its growth prospects, identify leading producers and highlight recent product innovations.

The DA-HF phosphoric acid process has been successfully implemented at Grupa Azoty’s Police fertilizer production plant in Poland, as part of a revamp of the site’s existing DH plant. Sébastien Havelange and Alexandre Wavreille of Prayon Technologies outline the performance improvements achieved by this first-of-its-kind plant.