Study on intelligent control for ore grinding and grading process

This paper analyzes the technical process of the grinding machine system in detail, based on the ore grinding and grading process of Sizhou Concentrator of Dexing Copper Mine in Jiangxi Copper Corporation, and defines the control contents and requirements of the system. Because the grinding process is a complex system with big sluggishness, long time lag, serious non-linearity and time-varying, so only applying PID control can not make the ore grinding and grading process in the best state of control. There fore Intelligent PID control is applied to simple loop, and series intelligent PID control and fuzzy control strategy applied to complicated loop. The ore-feeding flow control loop, ore-feeding water control loop, ore-discharge water control loop, water level of pump pond control loop, pump pond concentration series control loop and inlet pressure of the water cyclone control loop are designed. By all these control strategies and control loops, intelligent control of the grinding machine is realized.