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We have developed an air-spiral separator with a screw aspiration channel, which allows us to reduce the air consumption and specific quantity of metal per structure. We have established that the separation process is ensured at an air flow rate  V  = 7.1…7.9 m/s and the diameter of the working element  D  = 0.3 m/ To ensure a pressure of 120.7…133.4 Pa in the working element of the separator, the fan should ensure the initial air flow pressure  P  = 158.7…175.4 Pa. Our laboratory studies have established that the change in the product delivery volume uniformly affects the change in the output parameter at any speed value. We have found that the change in the product delivery volume has a larger effect on the change in the output parameter when the air flow rate increases. The relationship between the product delivery point and the air flow rate is almost linear and uniform.

Results of the Experimental Studies of Grain Cleaning with an Air-Spiral Separator