Análise técnica e econômica do uso do óleo da polpa de macaúba (Acrocomia Aculeata) como coletor na flotação

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Universidade Federal de Goiás


The aim of this work was to evaluate the potential of macaúba’s pulp oil as anionic collector in flotation of apatite, comparing with industrial sinks (FLOMIN C9012 and FLOTIGAM 5806). Macaúba’s pulp oil was submitted to chemical characterization, with the determination of the levels of acidity and saponification, in addition to infrared analysis. The minerals were submitted to chemical characterization by x-ray fluorescence (FRX) mineralogical, by x-ray diffraction (DRX) and scanning electron microscope (MEV) with energy dispersive spectrometry (EDS). Zeta potential measurements were made also of minerals in solution of electrolyte indifferent (NaCl). The collectors were previously subjected to saponification by two methods, one hot and one cold. Microflotação tests were done in modified Hallimond tube with the use of pure minerals of apatite, calcite and quartz, varying the pH and the concentrations of the collecting solutions. Assessed the saponification method, times of conditioning and flotation, the recovery from the collectors, the selectivity between the minerals and the influence of pH. It was observed that the methodology of saponification by cold method proved to be more suitable. 7 min conditioning and flotation 1 min were more favorable times. Only macaúba’s pulp oil hit the recovery of 90 % established for the smallest reagent concentrations, in the three pHs. The reagents FLOMIN C9012 and FLOTIGAM 5806, reached the desired recovery using higher dosages to pick up. The apparent selectivity OPMSF introduced between the mineral apatite, calcite and quartz for the three pHs tested, and concentrations of 1.0 and 2.5 mg/L. Gave a consumption of about 842 g/t, concentrated to OPMSF and FLOMIN C9012 and 2105 g/t of concentrate to 5806 FLOTIGAM. The results of microflotação in Hallimond modified tube indicated that macaúba’s pulp oil can act satisfactorily in the flotation of apatite. The economic analysis showed that in addition to gains against the cost of industrial collectors the OPMSF has advantages over the volume of consumption to FLOTIGAM 5806.



óleo da polpa de macaúba, coletor, apatita, microflotação, macaúba’s pulp oil, collector, apatite, microflotation


PACHÊCO, C. A. T. Análise técnica e econômica do uso do óleo da polpa de macaúba (Acrocomia Aculeata) como coletor na flotação. 2016. 120 f. Dissertação (mestrado profissional em gestão organizacional) - Universidade Federal de Goiás, Catalão, 2016.