[ Comportement à la flottation du minerai oxydé cuprocobaltifère de Kimpe en RD Congo par sulfuration superficielle ]
Volume 31, Issue 3, December 2020, Pages 498–508
P. Sony1, O. Tshibangu2, G. Kasongo3, F. Manene4, P. Kalenga5, L. Zeka6, and A. Ilunga7
1 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
2 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
3 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
4 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
5 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
6 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
7 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The flotation by surface sulphidisation of the oxidized copper-cobalt-bearing ore from Kimpe (1.97% Cu; 0.66% Co) was studied in order to evaluate its behavior by the analysis of its most influential parameters and their possible interactions. Tests limited to a simple roughing were planned and carried out according to a factorial approach using the Taguchi method. The results were found on the basis of the Signal-to-Noise (S/N) analysis and the analysis of variance (ANOVA) by considering the experience plan of the orthogonal matrix L16 (45). The work consisted in studying the doses of the main collector potassium amyl xanthate (PAX), of the sulphiting (NaHS), of the dispersant (Na2SiO3) and of the mixture (Gasoil-Rinkalore 840) as well as the particle size of the former miner at float. The predictive model of Taguchi's analysis predicts recovery yields of 88.44% Cu and 84.90% Co under optimal copper recovery conditions and 88.70% Co and 86.00% Cu under optimal conditions cobalt recovery. The optimal relative levels of the parameters studied are: 300 g/t PAX, 200 g/t Mixture, 4000 g/t NaHS, 200 g/t Na2SiO3 and a particle size of 20% +75 µm for Cu and 400 g/t PAX, 200 g/t Mixture, 4000 g/t NaHS, 300 g/t Na2SiO3 and a particle size of 20% + 75 µm for cobalt. It also emerges from the results obtained that the dose of PAX and that of NaHS are the influencing parameters. In terms of parametric interactions, for the recovery of copper, the mixture and the dose of the dispersant are in interaction considered to be weak. While the dosing of the collector and the particle size are in strong interaction given the differences in parallelism noted. The interaction between the dose of silicate and the dose of sulphiting can be considered weak for the recovery of cobalt.
Author Keywords: Floatation, Taguchi method, analysis of variance, copper-cobalt-bearing oxidized ore from Kimpe.
Volume 31, Issue 3, December 2020, Pages 498–508
P. Sony1, O. Tshibangu2, G. Kasongo3, F. Manene4, P. Kalenga5, L. Zeka6, and A. Ilunga7
1 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
2 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
3 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
4 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
5 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
6 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
7 Département de Chimie Industrielle, Faculté Polytechnique, Université de Lubumbashi, B.P. 1825, Lubumbashi, RD Congo
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The flotation by surface sulphidisation of the oxidized copper-cobalt-bearing ore from Kimpe (1.97% Cu; 0.66% Co) was studied in order to evaluate its behavior by the analysis of its most influential parameters and their possible interactions. Tests limited to a simple roughing were planned and carried out according to a factorial approach using the Taguchi method. The results were found on the basis of the Signal-to-Noise (S/N) analysis and the analysis of variance (ANOVA) by considering the experience plan of the orthogonal matrix L16 (45). The work consisted in studying the doses of the main collector potassium amyl xanthate (PAX), of the sulphiting (NaHS), of the dispersant (Na2SiO3) and of the mixture (Gasoil-Rinkalore 840) as well as the particle size of the former miner at float. The predictive model of Taguchi's analysis predicts recovery yields of 88.44% Cu and 84.90% Co under optimal copper recovery conditions and 88.70% Co and 86.00% Cu under optimal conditions cobalt recovery. The optimal relative levels of the parameters studied are: 300 g/t PAX, 200 g/t Mixture, 4000 g/t NaHS, 200 g/t Na2SiO3 and a particle size of 20% +75 µm for Cu and 400 g/t PAX, 200 g/t Mixture, 4000 g/t NaHS, 300 g/t Na2SiO3 and a particle size of 20% + 75 µm for cobalt. It also emerges from the results obtained that the dose of PAX and that of NaHS are the influencing parameters. In terms of parametric interactions, for the recovery of copper, the mixture and the dose of the dispersant are in interaction considered to be weak. While the dosing of the collector and the particle size are in strong interaction given the differences in parallelism noted. The interaction between the dose of silicate and the dose of sulphiting can be considered weak for the recovery of cobalt.
Author Keywords: Floatation, Taguchi method, analysis of variance, copper-cobalt-bearing oxidized ore from Kimpe.
Abstract: (french)
La flottation par sulfuration superficielle du minerai oxydé cuprocobaltifère de Kimpe (1,97 % Cu; 0,66 % Co) a été étudiée afin d’évaluer son comportement par l’analyse de ses paramètres les plus influents et leurs interactions éventuelles. Des essais limités à un simple ébauchage ont été planifiés et réalisés suivant une approche factorielle en utilisant la méthode de Taguchi. Les résultats ont été évalués sur base de l’analyse du ratio Signal-Bruit (S/B) et l’analyse de la variance (ANOVA) en considérant le plan d’expérience de matrice orthogonale L16 (45). Le travail a consisté à étudier les doses du collecteur principal amyl xanthate de potassium (PAX), du sulfurant (NaHS), du dispersant (Na2SiO3) et de la mixture (Gasoil-Rinkalore 840) ainsi que la granulométrie de l’échantillon du minerai à flotter. Le modèle prédictif de l’analyse de Taguchi prévoit les rendements de récupération de 88,44 % Cu et 84,90 % Co dans les conditions optimales de récupération cuivre et de 88,70 % Co et 86,00 % Cu dans les conditions optimales de récupération du cobalt. Les niveaux optimaux relatifs des paramètres étudiés sont: 300 g/t PAX, 200 g/t Mixture, 4000 g/t NaHS, 200 g/t Na2SiO3 et une granulométrie de 20 % +75 µm pour le Cu et 400 g/t PAX, 200 g/t Mixture, 4000 g/t NaHS, 300 g/t Na2SiO3 et une granulométrie de 20 %+75 µm pour le cobalt. Il ressort aussi des résultats obtenus que la dose de PAX et celle de NaHS sont les paramètres influents. En termes d’interactions paramétriques, pour la récupération du cuivre, la mixture et la dose de dispersant sont en interaction considérée comme faible. Tandis que le dosage de collecteur et la granulométrie sont en forte interaction étant donnée les écarts au parallélisme remarqués. L’interaction entre la dose de silicate et la dose de sulfurant peut-être considérée comme faible pour la récupération du cobalt.
Author Keywords: Flottation, méthode de Taguchi, Analyse de la variance, minerai oxydé cuprocobaltifère de Kimpe.
How to Cite this Article
P. Sony, O. Tshibangu, G. Kasongo, F. Manene, P. Kalenga, L. Zeka, and A. Ilunga, “Flotation behavior of the oxidized copper-cobalt-bearing ore from Kimpe in RD Congo by surface sulphidisation,” International Journal of Innovation and Applied Studies, vol. 31, no. 3, pp. 498–508, December 2020.
