Theoretical and Experimental Study on Pneumatic Classification of Fine-Metal-Powder

With the development of powder metallurgy industry, the fine-metal-powder classification becomes one of the vital techniques in powder technology. A pneumatic classifier without screen and mechanical moving parts is designed and developed. Theoretical analysis and experiments of Pneumatic-Classification was conducted. The oversize ratio in fine powder can be reduced to less than 5% and the undersize ratio in coarse powder less than 15% when the air flow is suitable. The classification effect is satisfactory for the customers.