Characteristics of open-and closed-circuit grinding systems

摘要

The characteristic differences between open-and closed-circuit grinding systems were examined via the use of a continuous vibration ball mill and a blade type classifier.For the same median diameter of the product,the rate of powder production in the closed-circuit is about 5% higher than that of the open-circuit.The median diameter of classified coarse particles for the closed-circuit is smaller than that for the open-circuit.The power requirement per unit mass production increases with decreasing mean diameter of the product.For the same mean diameter of the product,the power requirement for the closed-circuit process is about 5% smaller than that of the open-circuit process.This value corresponds to the difference in the rate of powder production between the two systems.