The ball mill grinding powder system is an extremely complex system that is difficult to achieve stable operation and process control using traditional control methods. Under the premise of meeting the safety of the grinding system, the ball mill grinding body is improved based on the working principle of the ball mill, and the control mode is improved, and the relationship between the grinding output, the drying output and the ventilation output is coordinated to realize the economic operation of the milling system.

The multi-variable decoupling controller is used to cancel the interaction between the ball mill inlet negative pressure and the ball mill inlet temperature, and the ball mill temperature object compensator compensates the lag and inertia of the ball mill inlet temperature process, improving the ball mill inlet temperature control quality; when present to the ball mill when the material is broken or the outlet of the ball mill is abnormal, the hot damper needs to move quickly. After the working condition is restored, the conventional control is switched back. When the outlet temperature of the ball mill is over temperature, the cold damper is opened by the selector, and the outlet temperature of the ball mill is restored. After that, the cold damper returns to normal control. With the above control scheme, the ball mill inlet negative pressure can be controlled within the desired range whether during the normal operation of the milling system or during start or stop. Especially when the ball mill is cut off, the negative pressure of the ball mill inlet can still be maintained within the normal range due to the timely action of the cold and hot dampers.

Under the premise of ensuring the stability of grinding and product compliance, the ball mill control system comprehensively improves equipment production capacity, reduces energy consumption, optimizes safety measures, reduces energy consumption, and improves economic efficiency. At the same time, it minimizes labor intensity and reduces staff and efficiency. the goal of. The system adopts standardized and open structure, supports PLC, intelligent instrument, frequency converter and acquisition module, etc. The system functions include:

●The control parameters can be modified to minimize the loss of equipment during operation.

●Flexible "manual / automatic / machine side operation" switching control to ensure the normal operation of production

●Adopt intelligent expert control system to realize mine feeding control of crusher and optimize balance control system

● Use automatic position-er to detect the actual material quantity of the powder ore bin and raw material warehouse, so as to facilitate the shift arrangement

● Can be involved in the enterprise LAN to achieve fast and simple data transmission in the factory

● Realize light and sound alarms, enabling communication between central control personnel and operators