Development of Shape Classifier for Fine Particles

形状分类器在先前的研究（专利申请中，62-19450）中作为实验基础。该分级器很好地适用于110 μ m以上的粒度。然而，不知道这种分级器在小于约110 μ m的颗粒的情况下是否有效。在本研究中，首先改进了圆孔筛的生产方法，以实现尽可能小的颗粒的形状分级。通过蚀刻方法加工，在薄不锈钢板上打开直径为100 μ m的许多孔。并采用非电解法对该丝网进行了镀镍处理.通过这种方法，获得了许多直径为80 μ m的均匀孔，尽管以前说100 μ m是一个下限。通过这种新筛的开发，直径为80 μ m左右的颗粒的形状分级已经成为可能。另外，通过扩大筛网的表面积，处理重量也可以提高到约10 g/min。认为该处理重量（10 g/min）足以用于研究室。1.采用非电解法加工得到了直径为80 μ m的均匀孔。2. 80 μ m以上粒度的形状分级已经成为可能。3.加工重量已经变得可以提高到约10 g/min。确定了筛网转速、吸附压力、防静电措施、颗粒配比的最佳条件。5.通过对分类的重复操作，获得了良好的效果。6.我想把这套设备装进书房里.

A shape classifier was made an experimental basis in the previous study (patent pending, 62-19450). This classifier applied well to a particle size of above 110 mum. However, it did not understand whether this classifier is effective or not in the case of smaller particles than about 110 mum.In this study, a production method of a circle hole screen was firstly improved, to carry out a shape classification of particles as small as possible than 110 m. Many holes of 100 mum in diameter on a thin stainless steel boad were opened by the etching method processing. And this screen was plated with nickel by the non- electolysis method processing. By this method, many uniform holes of 80 mum in diameter were got, although it was said that 100 mum was an under limit before now.By a development of this new screen, the shape classification of particles to about 80 mum in diameter have become possible. Also a processing weight have become possible to be raised to about 10 g/min, by expending a surface area of the screen. It is thought that this processing weight (10 g/min) is sufficient to use for a study room.The results are follows. 1. Uniform holes of 80 mum in diameter were got by using of the non-electolysis method processing. 2. The shape classification of above 80 mum of particle size have become possible. 3. A processing weight have become possible to be raised to about 10 g/min. 4. The optimum condition of the revolution velocity of the screen, the adsorption pressure, the prevention of static electricity, the mixture ratio of particles were defined. 5. Good results were got by a repeat operation of the classification. 6. I want to complete for a study room by incorporating this apparatus.