To avoid the effect of anisotropy caused by impeller in mechanical cells and investigate the effect of energy, Changundaet al.(2008) developed a flotation cell with oscillating grid. In this cell, the China Agitation Equipment is promoted by the oscillatory motion of parallel grids positioned inside the machine. Posteriorly, based on the cell by Changundaet al.(2008), Massey (2011) developed a cell flotation with the same dimensions, but which can operate at higher energies, reaching 5 kW/m3, similar to the conventional cells.

Soft power has become China’s new diplomatic tool to spread its influence in today’s changing international landscape. The establishment of Confucius Institutes (CIs) since 2004 to promote the understanding of Chinese language and culture is a striking example of how the government promotes soft power through cultural means. Through the macro- and micro-level analysis of CIs, this study shows that CIs fail to increase the soft power of China because many countries regard CIs as a propaganda tool and a threat to academic freedom and the local community. It shows that China’s soft power is not so attractive in the eyes of receivers. In fact, China’s aggressive cultural initiatives through the establishment of CIs have triggered another version of the ‘China threat’.

The solution purification process is an essential step in zinc Hydrometallurgy Equipment. The performance of solution purification directly affects the normal functioning and economical benefits of zinc hydrometallurgy. This paper summarizes the authors' recent work on the modeling, optimization, and control of solution purification process. The online measurable property of the oxidation reduction potential (ORP) and the multiple reactors, multiple running statuses characteristic of the solution purification process are extensively utilized in this research. The absence of reliable online equipment for detecting the impurity ion concentration is circumvented by introducing the oxidation-reduction potential into the kinetic model.

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