A method for online detection of blast furnace slag output

Abstract

The invention provides an on-line detection method for blast furnace slag quantity. The method comprises the steps of establishing a fuzzy reasoning model of the blast furnace slag quantity; setting a fuzzy subjection function about (Iti-It0) in combination with the influence characteristic of the magnitude of the (Iti-It0) on the blast furnace slag quantity, wherein Iti is drum current at the ith moment, and It0 is the sum of drum idle current and slag flushing water consumed current; establishing a blast furnace slag quantity calculating model by using the fuzzy reasoning model of the blast furnace slag quantity and the fuzzy subjection function; and performing on-line detection on the blast furnace slag quantity by using the blast furnace slag quantity calculating model. By using the using the fuzzy modeling method, a nonlinear dynamic relation among the water slag quantity, the drum idle current and the slag flushing water consumed current under the condition that the working condition changes is established, and the fuzzy reasoning model of the blast furnace slag quantity is acquired, so that the high-precision on-line detection requirement on the blast furnace slag quantity under the adjustment of the complex working conditions of blast furnace iron-making production can be met, and a reliable judgment basis is provided for smooth operation of a blast furnace.

Description

technical field [0001] The invention belongs to the field of blast furnace ironmaking, and in particular relates to an online detection method for blast furnace slag output. Background technique [0002] In the metallurgical industry, the blast furnace ironmaking process accounts for 70% of the total energy consumption of iron and steel enterprises. It is a large energy consumer in iron and steel enterprises and has low energy utilization efficiency, so its potential for energy saving and emission reduction is huge. As we all know, the smooth running of the blast furnace is a key link in the blast furnace ironmaking process. In the process of smelting, it is of great significance to improve the air permeability of the blast furnace and ensure the smooth and smooth production of the blast furnace if the amount of slag produced by the blast furnace ironmaking can be grasped in time and the balance of the iron tapping of the blast furnace can be understood in time. In addition...

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Problems solved by technology

At present, there are usually four detection methods for blast furnace slag output: one is to install a belt scale on the water slag transport belt. Transport tank car measurement, but this method has a serious lag and cannot reflect the real-time status of blast furnace iron and slag in time; the third is to rely on experienced blast furnace furnace chief visual inspection, this manual judgment method has large random errors, which is not conducive to blast furnace Refined, intelligent and standardized operation of production; the fourth is to use the current change of the dehydration drum controlled by the frequency conversion of the blast furnace wheel slag treatment system to indirectly measure the blast furnace slag output. It is not a linear relationship, so this method cannot effectively detect the amount of blast furnace slag when the working conditions change drastically

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