Vol. 5 No. 1 (2018)
Articles

Solubility of Phosphate Rocks in citric Acid

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F. G. M. Porto
University of Uberaba, Department of Chemical Engineering, Brazil
M.C.A. Neto
University of Uberaba, Department of Chemical Engineering, Brazil
J.R.D. Finzer
University of Uberaba, Department of Chemical Engineering, Brazil
DOI: https://doi.org/10.20448/journal.510.2018.51.32.36

Published 2018-12-17

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Keywords

  • Phosphate rock, Solubility, Citric acid solution

How to Cite

Porto, F. G. M., Neto, M., & Finzer, J. (2018). Solubility of Phosphate Rocks in citric Acid. World Scientific Research, 5(1), 32–36. https://doi.org/10.20448/journal.510.2018.51.32.36

Abstract

Taking into account that phosphate rocks can have high solubility regarding the different kinds of solvents used, dissolution of apatite from different places was applied in 2% citric acid solution. Semi analytical, 0,001g resolution scales for quantifying mass were used as well as Stolhman bottles attached to Wagner-like agitator where the extraction was carried out. Also, a digital spectrometer for doing the reading which determines the phosphate grades was used. The results consisted of a minimum value of 0,33% and a maximum of 28,2% of P2O5 varying according to the origin of the milled samples. The result can be useful for the selection of rocks to be processed.

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