Abstract

BUSTAMANTE-RUA, Moises Oswaldo; DAZA-ARAGON, Alan José; BUSTAMANTE-BAENA, Pablo  and  OSORIO-BOTERO, Julián David. Recovery evaluation of P ₂ O ₅ through three models of froth flotation of phosphoric rock. Bol. cienc. tierra [online]. 2019, n.45, pp.41-46. ISSN 0120-3630.  https://doi.org/10.15446/rbct.n45.72354.

The main objective of the research is to evaluate the recovery of P2O5 in phosphoric rock through 3 models of froth flotation (direct, inverse and direct-inverse). Representative samples were taken from the department of Tolima and parameters were established for each of the flotations with a conditioning time of 5 minutes and flotation times between 7-10 minutes. Contact angle measurements were made with a value of 39° reflecting its hydrophilicity for the quartz case. According to Zeta potential measurements, a separation region between pH 2-5,8 was determined using anionic collectors for direct flotation and pH 5,8-10 using cationic collectors for reverse hydroxylapatite flotations. Finally, it was found that the direct-inverse flotation allowed a greater recovery of P2O5, using as oleic acid and Aero® 845 Promoter collectors in the anionic process, and the Aeromine® 3030C collector and the phosphoric acid depressant in the cationic process.

Keywords : flotation of minerals; phosphoric rocks; recovery; apatite; metallurgical indices.

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