Froth flotation performance

Ekmekci, Z., Bradshaw, D.J., Harris, P.J., and Buswel, A.M., Interactive Effect of Milling Media and CuS04 Additions on the Flotation Performance of Sulphide Minerals from the Morensky ore, Part II Froth Stability, International Journal of Mineral Processing, Vol. T8, pp. 164-174, 2006. 

Schacham equation, 94 von Karman equation, 95 Froth flotation, 636,638 equipment, 645 performance, 638 Fuel cells, 646 characteristics, 655, 656 Fugacity coefficient, 372... 

The pH process monitoring and control equipment is standard industrial grade instrumentation and is available from numerous vendors. The pH measurement is commonly made in the froth flotation cells, and caustic soda or lime is added to the tailings output of the froth cells. This measurement is primarily used to control the pH of the plant process water with the set point selected to yield optimum performance from the flocculants added to the static thickener. Control of the process water acidity is also required to minimize the corrosion of process equipment. 

Alkoxy xanthates mainly contain ethyoxyl and propoxy xanthates. In general, the flotation performances of alkoxy xanthates are similar to those of alkyl xanthates. But alkoxy xanthate has a better frothing capability. 

The components of several foreign crude tar oils are found in Tables 2.4 and 2.5. The flowchart of crude tar oils is shown in Fig. 2.2. The content of active ingredient of crude tar oils is twice as much as that of paper pulp products. And the component of crude tar oils is relatively steady. Therefore, the flotation performance of crade tar oils is relatively better. It should be pointed out that however, the contents of unsaturated fatty acids and resin acids are relatively higher. Therefore, the frothing capacity of crude tar oils is so high that cmde tar oils are hard to be applied in industry. 

The flotation performances of sulpfofatty acids had also been discussed in the former chapters. Based on our studies, sulfofatty acids are characterized by strong frothing capability and good water solubility. The solubility of sulfo-octadecanoic acid and sulfohexadecanoic acid is 13 g/100 g water and 25 g/100 g water, respectively. 

Banford, A.W., Aktas, Z. and Woodburn, E.R., 1998, Interpretation of The Effect of Froth Structure on The Performance of Froth Flotation Using Image Analysis, Powder Technology, 98, 61-73. 

Foams have many industrial applications. The large gas-liquid interfacial area available is exploited in foam fractionation to efficiently separate surface active substances, such as proteins. However, when foam formation interferes with physical and chemical processes, stabilizing gradients must be avoided. Bubbles play an important role in chemical reactors, distillation, froth flotation, and aeration. In low-gravity environments surface tension gradients may provide the primary mechanism for bubble motion itself. The advent of modern computers has enabled simulations of complex interfadal motions to be performed, yielding information that is difficnlt to obtain by experiment or theoretical analysis. 

Heavy pyridines can be used to flotate sulfide mineral. Therefore, xanthate dosage can be decreased when heavy pyridine is applied to the flotation process. The frothing performance of creasol is weaker than that of pine oil. Compared with pine oil, the diameter of foam produced by creasol is relatively bigger. 

FIGURE 8-48 Flotation slurry froth contains sufficient air bubbles to degrade the performance of centrifugal pumps. (Courtesy of EOMCO Process Equipment Co.)... 

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