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Abstract
This paper presents results of tests performed to investigate the effect of gas rate (1.2–2.5 cm/s),hydrophilic fines content (5–20% w/w silica) and froth depth (10–30 cm) on fines recovery in a laboratory-scale flotation column operating without wash-water addition and absence of floatable particles.A model was developed based on the entrainment coefficients presented by [Trahar,W.J.,1981.A rational interpretation of the role of particle size in flotation.International Journal of Mineral Processing 8,289–327],which describes the mass contribution of the different size classes to the solids recovered in the concentrate.The entrainment model of [Zheng,X.,Johnson,N.W.,Franzidis,J.P.,2006.Modelling of entrainment in industrial flotation cells:water recovery and degree of entrainment.Minerals Engineering 19,1191–1203] was also tested.The results show both models described well the dependence of the mass flow rate of hydrophilic solids in the
Abstract
This paper presents results of tests performed to investigate the effect of gas rate (1.2–2.5 cm/s),hydrophilic fines content (5–20% w/w silica) and froth depth (10–30 cm) on fines recovery in a laboratory-scale flotation column operating without wash-water addition and absence of floatable particles.A model was developed based on the entrainment coefficients presented by [Trahar,W.J.,1981.A rational interpretation of the role of particle size in flotation.International Journal of Mineral Processing 8,289–327],which describes the mass contribution of the different size classes to the solids recovered in the concentrate.The entrainment model of [Zheng,X.,Johnson,N.W.,Franzidis,J.P.,2006.Modelling of entrainment in industrial flotation cells:water recovery and degree of entrainment.Minerals Engineering 19,1191–1203] was also tested.The results show both models described well the dependence of the mass flow rate of hydrophilic solids in the
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