On-line detection method of blast furnace slag quantity

Abstract

The invention provides an on-line detection method of blast furnace slag quantity, which aims to indirectly measure the blast furnace slag quantity by using current variation of a dehydration drum under variable frequency control of a blast furnace wheel method water granulated slag disposal system. In the invention, as current of the dehydration drum is proportional to grain slag and slag-washing water in the drum within a certain range, a current signal of a frequency converter of the dehydration drum of the furnace-process slag disposal system is transferred to a blast furnace PLC system by network or a point-to-point communication manner and then transferred to a process computer system for statistics, calculation and display through the PLC system; and a process computer performs real-time statistics of measurement of current, actual tapping quantity and weight of a transport slag pot car for a period of time, and different current of the dehydration drum is subject to data analysis to indirectly obtain the actual slag quantity of a blast furnace.

Description

technical field [0001] The invention relates to an on-line detection method for the amount of slag produced in iron and steel metallurgical blast furnace ironmaking. Background technique [0002] The smooth operation of the blast furnace is the key to the production of the blast furnace. It is of great significance to timely grasp the slag output status of the blast furnace ironmaking and the balance of the iron tapping in time to improve the air permeability of the blast furnace and the smooth production of the blast furnace. On-line detection of the slag amount is beneficial to effectively determine the blast furnace condition, and is also conducive to safe tapping and tap hole maintenance. At present, there are usually three detection methods for blast furnace slag output: one is to install a belt scale on the water slag transport belt, which has higher requirements for the installation environment and requires a lot of maintenance; the other is to measure by transporting...

AI Technical Summary

Problems solved by technology

At present, there are usually three detection methods for blast furnace slag output: one is to install a belt scale on the water slag transport belt, which has higher requirements for the installation environment and requires a lot of maintenance; the other is to measure by transporting tank cars. Due to the serious lag, the method cannot reflect the iron and slag discharge status of the blast furnace in time; the third is to rely on the visual inspection of an experienced foreman on duty. This kind of manual judgment has a large random error, which is not conducive to the refined production and standardized operation of the blast furnace

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