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Preliminary laboratory studies on Eppawela apatite-II

Authors:

J. Amarasekera ,

Ceylon Institute of Scientific and Industrial Research, P.O. Box 787, Colombo 7, LK
About J.

Minerals Technology Section

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M. G. M. U. Ismail

Ceylon Institute of Scientific and Industrial Research, P.O. Box 787, Colombo 7, LK
About M. G. M. U.
Minerals Technology Section
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Abstract

Investigations carried out earlier showed that the phosphate in Eppawela apatite can be converted into a citric acid soluble form by treatment with soda ash. In the present series of experiments apatite obtained from the grinding plant at Eppawela was used. Calcination of this powdered apatite at 14000C complete conversion of P5O5 to citric acid soluble form was obtained. The chemical and the energy dispersive spectrometer analyses of the powdered sample of apatite showed that it contains alumina, iron oxide and silica as main impurities. These impurities favoured the conversion of P5O5.in apatite to citric soluble form. Treatment of pure apatite with red clay containing alumina, iron oxide and silica also showed a positive effect on the conversion of P5O5 to citric soluble form.
How to Cite: Amarasekera, J. and Ismail, M.G.M.U., 1983. Preliminary laboratory studies on Eppawela apatite-II. Journal of the National Science Foundation of Sri Lanka, 11(2), pp.211–224. DOI: http://doi.org/10.4038/jnsfsr.v11i2.8384
Published on 30 Jun 1983.
Peer Reviewed

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