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 |
| ISBN: | 978-1-987820-33-1 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Microflotation of Apatite with Pulp Oils and Macauba Chestnut
Andre Carlos Silva1; Elenice Maria Schons Silva1; Canuele Adamiane T Pacheco1; Tercio William Pereira Rocha1; Debora Nascimento Sousa2;1UNIVERSIDADE FEDERAL DE GOIAS, Catalao, Brazil; 2INSTITUTO FEDERAL GOIANO, Catalao, Brazil;
Type of Paper: Regular
Id Paper: 217
Topic: 5
Abstract:
Among the minerals phosphorus, the group of apatite is the main source of phosphate used as input in the manufacture of industrial fertilizers, so studies that seek alternatives to the best use of this ore is very important in an essentially agricultural country like Brazil. Phosphates are classified as sparingly soluble minerals and are extremely sensitive to changes in their surface properties, which affect their behavior during flotation. Thus, it becomes crucial to understand the reagent system behavior to the efficiency of this process, where the fatty acids act as collector agent. Macauba (Acrocomia aculeata) is a palmae tree which naturally occurs in Brazilian savannas and has high concentrations of fatty acids The profile of Macauba’s fatty acids shows that the highest concentration is oleic acid (58,7%), followed by palmitic acid (19,7%) for the pulp and lauric acid (39,7%) and oleic acid (25,8%) for the nuts. These differences in fatty acid composition suggest different behavior when used as collectors in the flotation of minerals. In this sense, the present study sought to demonstrate, through microflotation testing Hallimond tube, the potential use of Macauba oils in the flotation of apatite. The tests were performed with 1.0 g of high purity apatite, with a particle size of 104µm at pH 8, 9 e 10 varying concentrations of the collector at 2.5, 5.0, 7.5 and 10.0 mg/L. The results showed a better floatability at all concentrations tested for pulp oil compared with Macauba’s nut oil.
Keywords:
flotation; fatty acids; Macauba; apatiteReferences:
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