Clarification of wet-process phosphoric acid

• Autorzy: Manieh A. A. , El-Naggar N. M. S.
• Języki publikacji: EN

Abstrakty

EN

Abu-Zaabal Fertilizers and Chemicals Company is one of the largest fertilizers producers in Egypt. The company produces phosphoric acid by the wet-process using local phosphate ore. The raw acid produced is black in colour and contains considerable amounts of suspended and dissolved impurities. Several methods were experimentally tested for the purification of this acid including: gravity settling, treatment with activated charcoal, treatment with bleaching earth, and treatment with activated local calcium ben-tonite. The best operating conditions for each treatment method were experimentally determined. It was concluded that the best purification method is the treatment with activated local calcium bentonite which results in a clear and much purer acid.

Słowa kluczowe

EN

clarification; wet-process; phosphoric acid

PL

klarowanie; proces mokry; kwas fosforowy

• Wydawca: Centrum Materiałów Polimerowych i Węglowych PAN
• Czasopismo: Polish Journal of Applied Chemistry
• Rocznik: 2000
• Tom: Vol. 44, nr 2-3
• Strony: 151--157
• Opis fizyczny: Bibliogr. 6 poz.

Twórcy

autor

Manieh A. A.

• Al-Azhar Univ., Cairo, EGYPT

autor

El-Naggar N. M. S.

• Abu-Zaabal Fertilizers& Chemieal Co.,Abu-Zaabal, EGYPT

Bibliografia

• [1] El-NAGGAR, N.M.S., "Upgrading of West Sibaeya Phosphate Ore and Phosphoric Acid produced by Abu-Zaabal Fertilizers & Chemicals Co." M. Sc. Thesis, Al-Azhar Univ., Egypt (1997).
• [2] R.L. CALBERT and E.C. MORENO, Ind. Eng. Chem., Proc. Des. Dev., 4, pp. 368 (1965).
• [3] G.E. WEAVER and L.D. POLLAND, "The Chemistry of Clay Minerals", Elsevier Publ. Co. 1975, p 213.
• [4] I. MOLDOVAN, AFCFP Quarterly Journal (1980).
• [5] A. DAVISTER and M. PEETERBROECK, Chem. Eng. Prog., (March 1982).
• [6] A. DAVISTER and G. MARTIN, Fertilizer Society Proceeding, no. 201 (15 Oct. 1981).