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Fertilizer research

, Volume 34, Issue 1, pp 79–84 | Cite as

Process for recovery of phosphorus and aluminum compounds from Maranhão aluminum phosphate rock

  • G. I. Horita
Article
  • 42 Downloads

Abstract

This paper presents a study on an alkaline wet-process for the solubilization of aluminum phosphate ore from the state of Maranhão, Brazil. By processing a sample from Trauíra Island containing 27% P2O5 and 29% Al2O3, extraction efficiencies of about 70% for P2O5 and 94% for Al2O3 could be achieved. Phosphorus was recovered as sodium phosphate and calcium phosphate while aluminum was recovered as sodium aluminate solution by-product.

Key words

Aluminum phosphate calcium phosphate sodium phosphate sodium aluminate alumina 

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Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • G. I. Horita
    • 1
  1. 1.Divisão de Química/Laboratório de Fertilizantes São PauloIPT, Instituto de Pesquisas Tecnológicas do Estado de São Paulo S/ACEPBrazil

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