Improving flotation separation efficiency of quartz-coal mixtures by using polyethylene oxide

CIM Journal, Vol. 5, No. 1, 2014

H. Wang and M. Cao
Department of Chemical & Materials Engineering, University of Alberta, Edmonton, Alberta, Canada

J.-C. Sztuke and A. Stradling
Applied Research & Technology, Teck Metals Limited, Trail, British Columbia, Canada

Z. Xu and Q. Liu
Department of Chemical & Materials Engineering, University of Alberta, Edmonton, Alberta, Canada

L’eau de lavage et le polyéthylène oxyde (PEOX) ont été utilisés dans la flottation du quartz et du charbon. L’eau de lavage a diminué l’entraînement du quartz -15 μm. Le taux optimal d’eau superficielle de lavage était de 0,05 cm/s. Le PEOX a aussi diminué l’entraînement. La combinaison de l’eau de lavage et du PEOX a produit une légère réduction supplémentaire d’entraînement. Pour des mélanges 1:1 de quartz -15 μm et de charbon oxydé -300 μm, l’utilisation combinée d’eau de lavage (0,05 cm/s) et de PEOX a augmenté l’efficacité de séparation d’environ 30 % à plus de 70 %, alors que l’eau de lavage seule à un taux de 0,05 cm/s n’a pas donnée une augmentation discernable.
Résumé L’eau de lavage et le polyéthylène oxyde (PEOX) ont été utilisés dans la flottation du quartz et du charbon. L’eau de lavage a diminué l’entraînement du quartz -15 μm. Le taux optimal d’eau superficielle de lavage était de 0,05 cm/s. Le PEOX a aussi diminué l’entraînement. La combinaison de l’eau de lavage et du PEOX a produit une légère réduction supplémentaire d’entraînement. Pour des mélanges 1:1 de quartz -15 μm et de charbon oxydé -300 μm, l’utilisation combinée d’eau de lavage (0,05 cm/s) et de PEOX a augmenté l’efficacité de séparation d’environ 30 % à plus de 70 %, alors que l’eau de lavage seule à un taux de 0,05 cm/s n’a pas donnée une augmentation discernable.
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