A collaborative optimization control method based on thickener-filter press production balance

Abstract

The invention discloses a synergistic optimization control method based on the production balance of a thickener-filter press. First, the real-time detection data and equipment operation data in the production process of the thickener-filter press are obtained; the thickener-filter press is established according to the obtained data. The production balance model of the filter press is used to calculate the current production capacity of the filter press to process ore pulp; based on the established production balance model, the calculated value of the underflow discharge flow of the thickener is updated, and combined with the liquid level control target value of the stirring tank, the obtained The new set value of the underflow discharge flow of the thickener; and then use the new set value of the underflow discharge flow of the thickener as the control target value to automatically adjust the speed of the thickener underflow slurry pump to achieve the production balance of the thickener-filter press and collaborative control. This method can not only ensure sufficient incoming materials for the filter press, but also ensure the stability of the underflow ore discharge of the thickener, so that the production of the thickener-filter press is always in a balanced state, ensuring a stable production process and high production efficiency .

Description

technical field [0001] The invention relates to the technical field of automatic control of the dressing and smelting process industry, in particular to a collaborative optimization control method based on the production balance of a thickener-filter press. Background technique [0002] In the beneficiation process, the thickener provides the subsequent filter press with underflow slurry that meets the production requirements. For large thickeners that use slurry pumps for underflow discharge, the underflow discharge is a continuous production process, and the subsequent plate The production of ore pulp by the frame filter press is an intermittent production process, and the two different production methods before and after will easily cause the incoordination of the whole process production and affect the stability of the process indicators; at the same time, the underflow discharge of the thickener is controlled by the subsequent filter press The processing capacity of the...

AI Technical Summary

Problems solved by technology

In the existing technical scheme, it mainly relies on the production and operation experience of the workers. Since the manual operation cannot realize real-time adjustment, the adjustment of the underflow ore discharge volume of the thickener is relaxed, and the feed production of the filter press is given priority, but the underflow discharge of the thickener The amount of ore is greater than the processing capacity of the filter press, causing a large amount of unprocessed ore pulp to return to the thickener, affecting the stability of the underflow concentration of the thickener, and causing a lot of energy waste; the conventional automatic control method is based on thickener and filter press The buffer equipment between - the liquid level of the stirring tank is the control target, and the speed of the underflow ore discharge of the thickener is automatically controlled to ensure that the liquid level is within the normal range, and at the same time try to stabilize the ore discharge of the thickener. However, this method is a relatively passive control method. When the processing capacity of the filter press changes or exceeds the liquid level control range, it is easy to cause a large adjustment to the underflow discharge speed of the thickener, causing large fluctuations in production

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