Study on the feed pressusre control of the fine sands classifying hydro-cyclone

The relationship between cyclone feed pressure verse the classifying and the thickening performances were studied with the industrial operating 250mm diameter fine sand recovery cyclones was studied.It was shown that the optimal classifying and thickening performances were got at different feeding pressure.The concentration of the underflow increases with the pressure.When the pressure is lower than the critical point,the classifying efficiency increases steadily with the pressure,but when it is over the point,the classifying efficiency decreases rapidly.In practice,the feeding pressure should be set near the rational point to avoid sacrificing classifying efficiency.