The flotation reagents can be added in a feed forward fashion based on the plant raw coal tonnage. Automatic feedback control of the flotation reagent addition rates has been lacking due to the unavailability of sensors for determining the quality of the froth cell tailings. Expensive nuclear based sensors have been tried with success.
Once the air was opened, the concentrates were collected at 1, 3, 5, and 7 min. At the end of the flotation process , the respective samples and the remaining material reported to the tailings were collected in different containers. The flotation products were weighed and dried at 110 ° C.
The AFW is a limiting curve indicating the possible ash and sulfur that could be achieved using froth flotation technology. Note that the packed column provided both low ash and sulfur; however, the Microcell and Jameson cell both provided high combustible recovery.
Effect of flotation reagents in zinc recovery from tailings Amir Hossein Navidi Kashani, Fereshteh Rashchi Faculty of Metallurgy and Materials Engin eering, University of Tehran, P.O.Box:365/4563
The mine tailings sample used in this study was taken from BCL mine, Selebi Phikwe, Botswana. The mine tailing is represented as flotation tailings in the form of mud containing residual metal sulfides in the form of chalcopyrite, pyrite, pyrrhotite and pentlandite and reagents after flotation.
Highlights The reuse of phosphate flotation tailings from a Brazilian fertilizer manufacturer has been evaluated. The use of a mixture of collectors synthetic and conventional increased the flotation selectivity. The flotation performance as a function of operating variables has been quantified. A grade of 29.4 wt.% P 2 O 5 and a recovery of 46.2 wt.% were obtained under selected ...