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Communication Dans Un Congrès Année : 2011

The hydrochloric acid process of phosphate ores for fertilizers industry

Résumé

In order to meet ever-increasing fertilizer demand while mitigating the environmental footprint, we studied an eco-efficient HCl processes and products with a view to transforming a variety of phosphate ores into fertilizers and mineral intermediates. Indeed, the sulfuric acid process, mainly in use for phosphate ores presents several inconveniences: no recuperation of high-commercial value products as rare earth elements (REE), increasingly strict use-regulations and product specifications to reduce the environmental impact (250 millions of tons of impure/radioactive phosphogypsum annually produced with the linked storage and water pollution problems). This P-ore treatment remains the most widespread technique essentially for economical reasons. In Brazil, with no significant sulfur ore deposits and correlatively high import costs, it appears that trying to adopt an alternative process seems vital for sustainable development. In this work we studies alternative ways and methodologies to the sulfuric acid treatment in order to reduce the impact on the environment through the better efficient acid process meeting technical and economical issues.
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Dates et versions

hal-00657037 , version 1 (06-01-2012)

Identifiants

  • HAL Id : hal-00657037 , version 1

Citer

Fernando Pereira, Essaïd Bilal, Mohamed Nasraoui. The hydrochloric acid process of phosphate ores for fertilizers industry. SYMPHOS (1er Symposium International sur la Technologie et l'Innovation dans l'Industrie des Phosphates),, May 2011, Marrakech, Morocco. ⟨hal-00657037⟩
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