In the vacuum system of pneumatic conveying, the authors have proposed, that a suction nozzle equipped with an injection pipe at the center, would provide a highly-dense and highly-efficient method of transporting a powder. In this paper, we examine the effect of suction velocity in suction nozzle. As a result, it was found that as the suction velocity increases, an operating range becomes smaller, although the change has negligibly small effect on the nozzle performance. An optimum condition was suggested by varying geometrical conditions. These powders behaviors were considered qualitatively with a relation of powder inflow between an injection pipe and a suction nozzle through the powder flow visualization.

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The accurate particle classification of separation diameter from 1 to 100μm is required in practical particle handling process. The cut size of louver type separator is ranged from 10 to 100μm. On the other hand, the cut size of dry-cyclone separator is ranged from 1 to 10μm. This report explains the recent research result of high performance louver and cyclone type separator based on simulation and visualization experiment.
The separation performance of new type louver separator is higher than that of the standard type. The selection of optimum blade spacing and inlet flow rectifier are important to improve particle separation efficiency.
For the cyclone separator, reverse flow region is near the upper outlet pipe region is observed from simulation and visualization experiment. By use of optimum size ring and jet flow injection near the upper plate, separation performance of cyclone is improved. In order to increase particle separation performance, the fluid turbulence region should be decreased.

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Lithium-ion batteries are now considered to be the most available power sources for not only portable devices but also larger and more powerful devices. For high energy, power and durability, the electrode structure and engineering with active material powders in Lithium-ion batteries are essential, especially the formation of the ionic and electronic conduction network in the porous electrodes. Additionally, the morphological changes of the active material powders are correlates with the electrochemical stability during the charge-discharge cycling.

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