Device and method for detecting and controlling slag state of converter

Abstract

The invention relates to a device and a method for detecting and controlling a slag state of a converter. The method comprises the following steps of: combining a mass spectrometer PLC (Programmable logic Controller) and an oxygen lance real-time control program of a second-level computer of the converter into an industrial Ethernet, wherein the mass spectrometer PLC is connected with a gas sampling device; adding an oxygen lance real-time control communication data module in a first-level PLC (Programmable logic Controller) of the converter; and additionally arranging an oxygen lance real-time control button in an operation picture; controlling the oxygen lance position and the oxygen flow of an oxygen lance at real time according to data in the communication data module by the first-level PLC control program of the converter. The mass spectrometer can accurately analyze data and ensures detection accuracy. The invention has high measuring and controlling accuracy, stops the phenomena of running slag and drying, has reasonable programming design, realizes real-time quantitative survey, controls a slag melting state of the converter, increases the yield and the production efficiency of molten steel of the converter, reduces the workload of operating workers for cleaning the slag, avoids the injury of personnel and equipment for running the slag and reduces the production cost of the converter.

Description

technical field [0001] The invention belongs to the field of automatic control, and in particular relates to a monitoring control device and a detection control method for the state of oxygen top-blown converter slag. Background technique [0002] Due to its high production efficiency and low cost, the oxygen top-blown converter has become a major steelmaking equipment. In the oxygen lance top-blowing steelmaking process, the slag state and oxygen lance control are the core technologies of the steelmaking operation. At present, the method for judging the state of the slag is generally to make judgments based on experience by workers observing the furnace mouth flame. Due to the different personal experience and mental state of the operators, the ability to control slag running and dry back is also different. Moreover, the shape of the flame is greatly affected by the fan, feeding, bottom blowing, furnace shape, etc., so it is difficult to accurately control the melting sta...

AI Technical Summary

Problems solved by technology

However, since this method is an indirect detection method, and there are problems such as the noise being blocked when the converter smoke hood is lowered and the slag accumulation at the furnace mouth, it cannot be accurately detected, so its application range is greatly limited.

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