The mining and mineral processing of Cu-Ni-PGM sulfide ores in South Africa occurs semi-arid regions. scarcity water resources these regions has become one the biggest challenges faced by concentrators. As a result, concentrators are forced to find ways through which they can manage control their usage. recycling re-use process concentration plants therefore common practice. This practice is be...

The development of an economic model predictive control (E-MPC) strategy is presented. uses a novel dynamic flotation that incorporates the physics froth phase in cell. was previously calibrated and validated using experimental data. Sensitivity analyses were conducted to select suitable objective function accounted for both process economics variable sensitivities. While ultimate goal rougher ...

Hydrogen peroxide (H2O2) is an efficient depressant for pyrite (FeS2) flotation. However, the depressing mechanism of H2O2 not fully understood. In this paper, capacity was examined by flotation tests. Results revealed that could be inhibited at pH 6.4. The powder in solution enhanced release O2 from H2O2. concentration less than H2O2; thus, major oxidant solution. Moreover, density functional ...

Insight about the operation of froth flotation through modelling has been in existence since early 1930s. Irrespective numerous industrial models that have developed over years, metallurgical outputs often do not involve pulp chemistry variables. As such, this work investigated influence variables (pH, Eh, dissolved oxygen and temperature) on prediction performance rougher copper recovery using...

This paper reports physical and physicochemical routes for the recycling of gold, silver, copper from waste printed circuit boards (WPCBs). The results optical micrographs indicated that metals matrix are substantially separated slot after comminution process. effects various operational factors, including gravitational force fluidization water, centrifugal separators on separation performance ...

Froth feature extraction plays a significant role in the monitoring and control of flotation process. Image-based soft sensors have received great deal interest process due to their low-cost non-intrusive properties. This study proposes data-driven sensor models based on froth images predict key performance indicators The ability multiple linear regression (MLR), backpropagation neural network ...

Impellers play a key role in flotation cells, as the turbulence generated through agitation aids particle suspension, air dispersion and particle–bubble collision. Therefore, it is important to understand effect that different impeller designs have on hydrodynamics, small variations could enhance performance. The study of hydrodynamics is, however, complex task due nature systems, which are opa...

Water scarcity necessitates the recycling of process water within mineral processing practices. This may however come with its disadvantages for unit operations such as froth flotation this is intensive and sensitive to chemistry. It therefore important monitor chemistry recycle stream any other source flotation. Monitoring concentrations anions in recycled consider these are speculated impact ...

Fast agglomeration by emulsion binders to capture fine, hydrophobic particles has been developed in the past few years as an alternative froth flotation small air bubbles. This new method consists of mixing a particle suspension and saltwater-filled droplets covered with semi-permeable oil layers. These expand due osmotic flux water caused presence salt inside droplets. To better understand phy...