Abstract Flotation performance is influenced by many hydrodynamic variables, such as impeller speed, airflow rate, and cell geometry. These variables’ effects interactions remain unsatisfactorily explored, especially concerning scaling-up procedures. As an innovative approach, this study considered factorial-designed experiments to explore the of factors (impeller tip speed superficial gas velo...

This study investigates the flotation performance of a representative hard coal slime sample (d80 particle size of minus 0.2 mm) obtained from the Prosper-Haniel coal preparation plant located in Bottrop, Germany. Flotation was carried out with a newly designed flotation cell refurbished from an old ultrasonic cleaning bath (2.5 L volume) equipped with a single frequency (35 kHz) and two differ...

Flotation is a complex process that exhibits high dimensionality which makes modeling and optimization very challenging. One technique to alleviate the problem combine variables together into more informative ones. Bubble surface area flux air recovery are examples of reduction. Gas holdup also captures effect plurality including gas rate, bubble size, surfactant type, concentration. This work ...

A study was carried out to determine the effect of water quality on flotation performance. The experimental test work comprised of batch flotation tests using Denver lab cell for a period of 10 minutes. Nine different test runs were carried out in triplicates to ensure reproducibility using different water types from different thickener overflows, return and sewage effluent water (process water...

the provision of an adequate quantity of cells with proper function and purity is one of the main challenges of tissue engineering studies. stem cells, with their self-renewal and differentiation capacity, are considered one of the main cell sources in the field of tissue engineering. previously, the use of chemical factors seemed to be the only possible way for stem cell differentiation. howev...

Rubinstein J (1995) Cohtmn Flotation: Processes, Designs and Practices. New York: Gordon and Breach. Schubert Hand Bischofberger C (1979) On the optimization of hydrodynamics in flotation processes. In: Laskowski J (ed.) Proceedings of the 13th International Mineral Process Congress, pp. 1261-1287. Warsaw: Elsevier. Wills BA (1992) Introduction to Mineral Processing Technology, 5th edn, pp. 558...

Industrial wastewater contains a lot of pollutants and therefore needs special treatment processes. The treatment process may contain mechanical, biological, chemical, physical and physiochemical such as Coagulation – Flocculation process. The goal of this experimental work was to investigate the effects of coagulationflocculation and dissolved air flotation as a hybrid process of industrial wa...

Carrier flotation is a technique that can recover fine particles by using coarse carrier during the process. In heterogeneous flotation, mineral of different minerals are used as carriers to particles. By Cu2+-treated pyrite carriers, chalcopyrite recovery could be improved. However, disadvantage this it requires post-flotation separation process improve grade final Cu concentrate. This study t...

The effects of a chelating surfactant and different foaming agents on the efficiency of cleaning process waters from a thermomechanical pulp (TMP) mill were studied in a Voith flotation cell. Turbidity measurements and gas chromatography were used to determine the removal extent and characteristics of dissolved and colloidal substances (DisCo). The metal ion content in the process waters before...