Roasting Decomposition for Phosphate Separation from Zircon Tailing
I. Trisnawati1,2, G. Prameswara3, E. P. Sari2, A. Prasetya1, P. Mulyono1, H.T.M.B. Petrus1
1Gadjah Mada University, Yogyakarta, 55281 Indonesia
2Polytechnic Institute of Nuclear Technology, National Research and Innovation Agency, Yogyakarta, 55281 Indonesia
3Politeknik ATI Makassar, Kota Makassar, Indonesia
Keywords: Roasting, magnetic tailing, zircon, separation
Abstract
In this study, the thermal decomposition of zircon magnetic tailing has been conducted to remove phosphate using a roasting process with Na2CO3 and water leaching. The research on zircon magnetic tailing processing, which contained monazite, xenotime, zircon, anatase, rutile and cerianite, aimed to test the effectiveness of roasting techniques for phosphate decomposition so that REE can be easily extracted. The optimal conditions to ensure phosphate recovery up to 93.27% were determined. In this condition, zircon and xenotime minerals are still confirmed in the roasting products using Na2CO3.
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