Ahmet YARTAŞI, Yüksel ABALI, Hakan TEMUR, M. Muhtar KOCAKERİM

Sulu Ortamda SO2 Gazı İle Fosfat Kayasındaki Kalsitin Çözünme Kinetiği

Yap lan bu çal mada fosfat kayas nda bulunan karbonatl minerallerin sulu ortamda SO2 gaz ile çözünme kineti i incelenmi tir.Çözündürme i lemlerinde reaksiyon s caklve kar t rma h z parametre olarak seçilmi tir. Reaksiyon s cakl oran ve tanecik boyutunun küçülmesi ile çözünme oran artm t r. Çözünme reaksiyonunun homojen 1. mertebe oldu u ve aktivasyon enerjisinin 21,70 kJ.mol-1 oldu u tespit edilmi tir

Anahtar Kelimeler:

Fosfat kayas , Kalsit, Çözünme kineti i, SO2 gaz

Sulu Ortamda SO2 Gazı İle Fosfat Kayasındaki Kalsitin Çözünme Kinetiği

Keywords:

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1. Anonymous, Kimya Sektör Ara t rmas : Fosfat , Türkiye S nai kalk nma Bankas Yay n , 17, 1-57, (1979).
2. San gök, Ü., Anorganik Endüstriyel Kimya , stanbul Üniversitesi Yay n , stanbul, 211-245, (1987).
3. Önal, G., Maz da Fosfat Cevherlerinin Petrografik Etüdü ve Zenginle tirilmesi , stanbul Teknik Üniversitesi Maden Fakültesi, Doktora Tezi, stanbul, (1970).
4. Sulc, J. And Hegner, P., Enriching of phosphates using sulfur dioxides , Chem. Prum., 32 (10), 521-523, Chem. Abs., 98, 18822c, (1982).
5. Enüstün, V., Güneydo u Cevherlerinin Mikro Yap s ve Çözünürlüklerinin Islah mkan , TÜB TAK Ara t rma Raporu MAG 29, Ankara, (1972).
6. Economou, E.D., Vaimakis, T.C. and Papamichael, E.M., The kinetics of dissolution of the carbonate minerals of phosphate ores using dilute acetic acid solutions: The case of pH range from 3.96 to 6.40 , Journal of Colloid and Interface Science, 245, 133-141, (2001).
7. Sadeddin, W. and Abu-Eishah, S.I., Minimization of free calcium carbonate in hard and medium hard phosphate rock using dilute acetic acid solution , International Journal of Mineral Processing, 30, pp 113-125, (1990).
8. Abu-Eishah, S.I., El-Jallad, I.S. and Muthaker, M., Beneficiation of calcareous phosphate rocks using dilute acetic acid solutions , International Journal of Mineral Processing, 31, pp 115-126, (1991).
9. Economou, E.D. and Vaimakis, T.C., 1997, Beneficiation of Greek calcareous phosphate ore using acetic acid solutions, Ind. Eng. Chem. Res., 36, pp (1491-1497).
10. McCullough, J., Philips, J. F. and Tate, L. R., Preparation of dicalcium phosphate from phosphate rock by the use of sulfurdioxide, water and carbonil compounds, U.S. Pat. 4, 113, 842, (1978).
11. Michel, R., Method for manufacture of phosphoric acid from phosphate rock , U.S. Pat. 4, 108, 957, (1978).
12. Abal , Y., Çolak, S. and Yarta , A., Dissolution kinetics of phosphate rock with Cl2 gas in water , Hydrometallurgy, 46, 13-25, (1997).
13. Yarta , A., Fosfat kayas n n sulu ortamda SO2 gaz ile çözünme kineti i , Atatürk Üniversitesi Fen Bilimleri Enstitüsü Doktora Tezi, Erzurum, (1993).
14. Abal , Y.; Çolak, S. and Yap c , S., The optimisation of the dissolution of phosphate rock with Cl2-SO2 gas mixtures in aqueous medium , Hydrometallurgy, 46, 27-35, (1997).
15. Calmanovici, C.E. and Giulietti, M., Technological optitude of some Brazillian phosphate rocks for acid decomposition , Ind. Eng. Chem. Res., 29 (3) 428-8, Chem. Abs. 112 (14), 121594 m. (1990).
16. Fitch, E.B., Roberts, E.J. and Weber, W.C., Phosphoric acid by the acidulation of the phosphate rock with sulfuric acid , U.S. Pat. 3, 552, 918. Chem. Abs., 74, 66162 p. (1971)
17. Treushchenko, N.N., Belyakov, V.A. and Pozin, M.E., Interaction of components of phosphate raw material with dilute sulfuric acid solutions , Zh. Prikl. Khim. 60 (8), 1681-5, Chem. Abs. 107, 179391 f., (1987).
18. Tennakonei K., Weerasooriya, S.V.R., Jayatissa, D.L., Domayanthi, M.L. W.D. and Silva, L.H.K., Nonhygroscopic superphosphate fertilizer from apatite and hydrochloric acid , Inst. Fund. Stud., Kandy, Sri Lanka Fert. Res., 16(1) 87-96, Chem. Abs. 109 (17), 148508 m., (1988).
19. Konyukhova, L.I. and Belokoskov, V.L., Recovery of phosphoric acid from an apatite concentrate by extraction with 1-butanol , Khim. Technol. Pererab. Redkometal Syr ya Kol sk. Poluostrava 3-11, Chem Abs. 80 (10), 49792 a., (1972).
20. Parlea, G., lovi, A. and Parlea, M., Studies on the decomposition process of phosphate rocks with nitric acid , Timisoara, Ser. Chim. 23 (1), Chem. Abs. 92. 163300 7 w., (1978).
21. Zhang, Yu. and Muhammed, M., An integrated process for the teratment of apatite obtained from dephosphorization of iron ore , J. Chem. Tech. Biotechnol., 4747-60, (1989).
22. Hussein, M. and Aglan, S., Extraction of Egyptian rock phosphate with ammonium bisulfate. Part 2. factors affecting dissolution of sibaiya rock in ammonium bisulfate , Chem. Econ. Eng. Rev. 11(10-11), 49-51 Chem. Abs. 92, 163016 y., (1979).
23. Furman, N. H., Standart Methods of Chemical Analysis , D. Van. Nostrand Company, Inc., Newyork (Six. ed.), (1963).
24. Alkan, M., Baz bor minerallerinin kükürt dioksitli sulardaki çözünürlükleri , Doktora tezi, Atatürk Üniversitesi Fen Bilimleri Enstitüsü, Erzurum, (1985).
25. Abal , Y.; Çolak, S. ve Ekmekyapar, A., Ma nezit mineralinin sulu ortamda kükürt dioksit gaz ile çözünme kineti i , Do a-Tr. J. of Engineering and Environmental Sciences, 16, 319- 324, (1992),
26. Moore, J.W. and Moore, E.A., Environmental Chemistry , Academic Pres, Inc., London, p.210- 211, (1976).