Slot and level control method of sintering mixture

Abstract

The invention relates to a slot and level control method of a sintering mixture, which belongs to the field of a metallurgical sintering production control technique. The slot and level control method provided by the invention has the technical scheme: tracking and recording the weight distribution of the mixture in the whole mixing flow by utilizing an array; predicting the weight of the mixturedischarged by a slot; dynamically predicting the variation trend of a level; adjusting the quantity of the mixture in advance; eliminating control errors caused by great lag of a system; prolonging the detecting data filtering period of the weight of the slot; and reducing control fluctuation. The control method provided by the invention tracks and records the weight distribution of the mixture in the whole mixing flow by utilizing the array, predicts the weight of the mixture discharged by the slot, dynamically predicts the variation trend of the level, provides the means for adjusting the quantity of the mixture in advance, eliminates the control errors caused by great lag of the system, prolongs the detecting data filtering period of the weight of the slot and effectively reduces the control fluctuation; the control parameters have actual derivation significances; and the debugging is convenient.

Description

technical field [0001] The invention relates to a method for controlling the material level of a sintering mixture tank, belonging to the technical field of metallurgical sintering production control. Background technique [0002] Sintering production is the process of processing iron-containing powdery raw materials into massive sinters to meet the needs of blast furnace ironmaking. During production, various raw materials are mixed together, called mixtures, and sent to the sintering machine to sinter into lumps. The basic process is that in the batching room, various required powdery raw materials are put on the belt in proportion through the feeding equipment, mixed and granulated by the mixing equipment to form a mixture, and then transported to the mixing tank for buffering by the belt, the lower part of the mixing tank There is a round roller feeder to discharge the mixed material to the sintering machine trolley to ignite and agglomerate. The operation of modern sin...

AI Technical Summary

Problems solved by technology

Simple PID control often causes material breakage or stockpiling, which requires manual intervention

2. The weight measurement of the mixing tank is not sensitive due to the harsh environment

There will be a large error in directly using the weight of the trough as the control target value

3. Changes in the set value of the mixture amount directly cause changes in the set values ​​of various raw materials, and frequent large fluctuations affect the stability of the mixture components

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