Pilot scale direct flotation of a phosphate ore with silicate-carbonate gangue.

• Autor(a) principal: Albuquerque, Rodrigo Oscar de
• Data de Publicação: 2012
• Outros Autores: Peres, Antônio Eduardo Clark, Aquino, José Aury de, Praes, Plínio Eduardo, Pereira, Carlos Alberto
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFOP
• Texto Completo: http://www.repositorio.ufop.br/handle/123456789/4940; https://doi.org/10.1016/j.proeng.2012.09.452
• topic: Column flotation; Flotation reagents; Flotation collectors; Anionic flotation; Phosphate flotation

The present pilot scale study addresses the direct flotation route for the concentration of a phosphate ore bearing a silicate-carbonate gangue. The target was to selectively separate apatite from a phosphate ore bearing silicate/carbonate gangue using flotation columns. Based on the results of a previous laboratory scale investigation, a reagents scheme was selected and tested, using, under alkaline conditions, corn starch and a natural collector extracted from the distillation of coconut oil. An open rougher-cleaner circuit yielded a final concentrate reaching 30.5% P2O5 grade, at 80.8% recovery level.