Method for automatically controlling dry red mud filter press system

Abstract

The invention discloses a method for automatically controlling a dry red mud filter press system, comprising the following steps: enabling the pressure of a red mud feeding system for a filter press to be balanced and stable by adopting the variable-frequency adjustment, reducing the rotating speed of a motor at variable frequency in the time interval between the ending of one red mud feeding period and the starting of the next red mud feeding period to make the motor run without stop; reducing the frequency of starting and stopping high-capacity electrical equipment; arranging an electrical switching valve and an electrical adjusting vale, and connecting the high-low red mud positions of a red mud feeding slot with a red mud feeding pump; making the red mud circulate internally and the high-capacity electrical equipment run without stop when the filter press running wrong; and arranging an upper unit state displaying device to display and store the running, failing and alarming information of the dry red mud filter press system. In the invention, the peripheral equipment and the filter press are integrated into a whole control system by considering the whole situation of the control system, thus the working efficiency of the filter press is improved, the automatic balancing capacity of the dry red mud filter press system is improved, the pressure of the red mud feeding system is made to be balanced and stable, and the maintenance load of the filter press is greatly reduced.

Description

technical field [0001] The invention relates to a system control method of a dry process red mud filter press in an alumina production enterprise. Background technique [0002] At present, the filter press is mainly used in the existing alumina production enterprises to process the red mud discharged during production, and to press the red mud of the sintering method and the Bayer method to achieve solid-liquid separation, so as to provide for the storage of red mud new method. However, most of the filter press control methods sold in the domestic market are mainly manual and local machine control, without considering the overall control of the system and the special materials (red mud) in alumina production, which cannot make the system balanced and stable, resulting in pressure loss. The filter cannot reach the continuous working state, resulting in low production efficiency and heavy equipment maintenance workload. Contents of the invention [0003] The technical prob...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an automatic control method for the dry-process red mud filter press system to overcome the problems in the prior art that the system cannot be balanced and stable, which leads to the inability of the filter press to reach a continuous working state and the production efficiency. Low, insufficient equipment maintenance workload