Development of Shape Classifier for Fine Particles

在之前的研究中，形状分类器是一个实验基础(专利正在申请中，62-19450)。这种分级机很好地适用于粒度在110微米以上的颗粒。在本研究中，首先改进了圆孔筛的制作方法，对尽可能小于110米的颗粒进行形状分级，通过蚀刻的方法在不锈钢薄板上开了许多直径为100微米的孔。并采用非电解法对该丝网进行了镀镍处理。用这种方法得到了许多直径为80微米的均匀孔，尽管以前说100微米是一个下限。这种新筛子的开发使直径约为80微米的颗粒形状分类成为可能。此外，通过扩大屏幕的表面积，可以将处理重量提高到约10g/min。这种处理重量(10克/分钟)被认为足以用作自习室。结果如下。1.采用非电解法加工得到了直径为80微米的均匀孔洞。2.实现了粒度在80微米以上的形状分级。3.已有可能将加工重量提高到约10克/分钟。4.确定了筛分转速、吸附压力、防静电、颗粒配比的最佳条件。5.通过多次分类，取得了较好的效果。6.我想把这套设备装进自修室。

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.