Automatic control system for RH refining equipment of steel mill

Abstract

The invention provides an automatic control system for RH refining equipment of a steel mill. The system comprises a parameter collecting and inputting module, a decarburization control module, an alloy adding module, a temperature control module and a terminal control module, wherein the parameter collecting and inputting module is used for acquiring or inputting initial and target data of moltensteel; the decarburization control module is used for configuring the decarburization treatment time and the decarburization oxygen blowing amount parameters according to the carbon content of the initial and target data of molten steel; the alloy adding module is used for configuring the alloy adding amount and the molten steel acid fusion aluminum amount parameters according to the received theinitial and target data of molten steel; the temperature control module is used for configuring the warming oxygen blowing amount, the warming aluminum adding amount or the steel scrap adding amountparameter according to the received initial and target data of molten steel and the alloy adding amount parameter; and the terminal control module is used for receiving the parameters configured by the modules, configuring a control command according to the received parameters and separately sending the parameters to an oxygen gun system, a vacuum pump system and an alloy system of the RH refiningequipment.

Description

technical field [0001] The invention relates to the technical field of control, in particular to an automatic control system for RH refining equipment in a steel plant. Background technique [0002] Vacuum refining is a refining method commonly used in steel production at present. It can produce high-quality steel with high purity and meet the requirements of social development for steel performance. At present, the RH refining technology has developed from the original single degassing to decarburization, uniform molten steel temperature and composition, desulfurization, dephosphorization and other multi-functional out-of-furnace refining technologies, which have become an indispensable refining process for many high-quality steel smelting. Since the pyrometallurgical reaction in RH refining takes place in a closed vacuum chamber, the process is quite complicated, involving flow, heat transfer and complex reactions, etc. It is quite difficult for people to understand it. Fo...

AI Technical Summary

Problems solved by technology

At present, the analysis and judgment of this refining process mainly rely on manual operation, especially in the RH oxygen blowing decarburization and alloying smelting process, it is necessary to take samples for temperature measurement and analysis every other time period to determine the operation process to adjust the composition of molten steel , temperature, this kind of manual operation is both cumbersome and inaccurate, and it is not conducive to reducing costs. It can no longer meet the requirements of current steelmaking.

[0003] Compared with the advanced production and research level of foreign countries, there is still a big gap in the development and application of RH process control simulation in my country, and there is basically no complete set of RH refining simulation control technology of its own.

However, in actual production, the process control process simulation software that is directly purchased from abroad and matched with the equipment is very expensive, and there is also a problem of coordination with the specific RH refining equipment. If the coordination is not good, it will affect the refining process

And with the continuous improvement of the refining level, the production process and raw material level are constantly changing, making the adjustment of the imported model relatively difficult

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