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According to Archimedes' principle, a submerged object with a density lower than that of aqueous acid solution is more buoyant than a smaller one. In this work, a remarkable phenomenon is reported wherein a dissolving drop on a substrate rises in the water only after it has diminished to a much smaller size, though the buoyancy is smaller. The drop consisting of a polymer solution reacts with the...
It is well-known that ultra-fine particles, especially those with oxidized surface, are difficult to float using conventional methods. Flotation of oxidized ultra-fine particles has been a serious problem which should be well solved as the demand for energy is increasing. In this investigation, the flotation behaviors of fresh and oxidized fine coal (<45 μm) and the effect of mixing with coarse...
During the coal flotation process, high ash coal fines are carried into foam, although process optimization can reduce ash content. This paper suggests an alternative method for coal flotation which has a significant effect on quality, coal production processes and plant design.
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