2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 10: Mineral & Secondary Battery

Editors:Kongoli F, Silva AC, Arol AI, Kumar V, Aifantis K
Publisher:Flogen Star OUTREACH
Publication Year:2015
Pages:340 pages
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)
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    Influence of Conditioning and Flotation Time Using Macaúba’s Oil in Microflotation

    Canuele Adamiane T Pacheco1; Andre Carlos Silva1; Elenice Maria Schons Silva1;
    Type of Paper: Regular
    Id Paper: 216
    Topic: 5


    In an essentially agricultural country, like Brazil, technological improvements to apatite's mineral group are extremely important, which is the main source of phosphate used as input in the manufacture of industrial fertilizers. Brazilian’s apatite deposits have a complex mineralogy and the phosphate concentration occurs, almost in its totality, through froth flotation. The reagent system in froth flotation is a determining factor in the mineral recovery efficiency. Researches on the vegetable oils application as collectors in froth flotation has been carried out in order to seek alternatives reagents in way to promote a higher selectivity, higher recovery and lower costs. This reagent type are, in its essence, renewable and environment friendly. Macauba (Acrocomia aculeata) is a palm tree, which naturally occurs throughout the tropical zones of Latin America and has high concentrations of fatty acids, such as oleic (58.7 %) and palmitic acids (19.7 %) for its pulp. Macauba’s oil is used to produce various products: pharmacological, nutritional, fuel and the generation of co-products such as charcoal from their waste. The present paper sought present the results for microflotation tests using Hallimond tube using Macauba’s saponified oil as apatite collector. The tests were performed with 1 g of high purity apatite samples, particle size -100 +150# (-150 +106 µm) at pH 9. The collector concentrations ranging 2.5; 5.0; 7.5 and 10.0 mg/L. Other operational parameters where: conditioning time 4; 7; 10 and 15 minutes and flotation time 1; 2; 3; 5 and 10 minutes. In total 240 tests were conducted. The results showed that at all concentrations the conditioning time of 7 minutes and flotation of 1 minute are sufficient for determining the floatability of the oil Macauba’s pulp. The Macauba’s oil was able to achieve apatite recoveries above 95%.


    Efficiency; Flotation; Sustainability;


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    Pacheco C, Silva A, Silva E. Influence of Conditioning and Flotation Time Using Macaúba’s Oil in Microflotation. In: Kongoli F, Silva AC, Arol AI, Kumar V, Aifantis K, editors. Sustainable Industrial Processing Summit SIPS 2015 Volume 10: Mineral & Secondary Battery. Volume 10. Montreal(Canada): FLOGEN Star Outreach. 2015. p. 115-124.