Phosphogypsum (PG) crystal size distributions in presence and absence of PG seed crystals and sorbitol surfactant

• Autorzy: Abdel-Aal El-Sayed A. , Abdel-Ghafar Hamdy M. , El-Sayed Dina , Mahmoud Mohamed H.H.

Identyfikatory

DOI

10.37190/ppmp/193615

• Języki publikacji: EN

Abstrakty

EN

Leaching of calcium phosphate with sulfuric acid was carried out to study phosphogypsum (PG) crystal growth and size distributions in presence and absence of phosphogypsum seed crystals (PGSC) and sorbitol surfactant (SS) additives. PG crystallization simulates industrial Dihydrate process for phosphoric acid production. PG crystals grow in a medium containing 26±1% P2O5 phosphoric acid and 2±0.5 % free sulfuric acid. Better filterability of phosphoric acid can be achieved with large crystals. The formed PG crystals are larger with addition of either 100 ppm Sorbitol surfactant, 5%, 10% or 15% PGSC compared to the baseline (without additives). With addition of surfactant or increasing the % of PGSC from 5% to 15%, both the mean diameter and d90 of crystalized PG are increased due to enhancing the crystallization growth rates.

Słowa kluczowe

EN

crystal growth; crystal size distribution; characterization; calcium sulfate dihydrate; leaching with simultaneous crystallization

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2024
• Tom: Vol. 60, iss. 5
• Strony: art. no. 193615
• Opis fizyczny: Bibliogr. 22 poz., rys., tab., wykr.

Twórcy

autor

Abdel-Aal El-Sayed A.

• Central Metallurgical Research and Development Institute (CMRDI), P.O. Box: 87 Helwan, Cairo, Egypt

autor

Abdel-Ghafar Hamdy M.

• Central Metallurgical Research and Development Institute (CMRDI), P.O. Box: 87 Helwan, Cairo, Egypt

autor

El-Sayed Dina

• Central Metallurgical Research and Development Institute (CMRDI), P.O. Box: 87 Helwan, Cairo, Egypt

autor

Mahmoud Mohamed H.H.

• Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).