Automatic steel ladle baker braking system and method

Abstract

The invention discloses an automatic steel ladle baker braking system and method. The automatic steel ladle baker braking system comprises a steel ladle, a controller, a temperature detecting device,a coal gas supply pipeline, a coal gas electric adjusting valve, a coal gas caloric value measurer, a coal gas flow rate detecting device, an air supply pipeline, an air electric adjusting valve and an air flow rate detecting device. The controller obtains the area, the barking time and baking temperature of steel ladle refractory material and the coal gas caloric value, calculates the energy required by heating the refractory material and distributes the coal gas quantity; PID closed-loop control of the coal gas supply quantity is realized through the coal gas electric adjusting valve and thecoal gas flow rate detecting device; the air supply quantity is calculated according to the coal gas caloric value and the actually measured coal gas quantity; and PID closed-loop control of the airsupply quantity is realized through the air electric adjusting valve and the air flow rate detecting device. According to the automatic steel ladle baker braking system, PID closed-loop control over coal gas and the air is realized, and reasonable fuel supply is realized according to the temperature rising requirement of the refractory material to lower temperature deviation during the baking process.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to an automatic baking system and method for a ladle roaster. Background technique [0002] The steel ladles of metallurgical enterprises need to replace all the refractory materials after using for a period of time, so as to ensure the safety of molten steel contained in the ladles. Therefore, all refractory materials are replaced, and the steelmaking plant is referred to as an overhaul package; the overhaul package needs to be baked strictly according to the refractory baker, to drain all the moisture in the refractory material, and bake to the temperature required by the process. [0003] At present, ladle bakers in metallurgical enterprises generally use large, medium and small fires for combustion, and cannot be baked strictly according to the temperature curve of refractory materials. Because the valve positions of the gas control valve and air control valve are fixed at l...

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Problems solved by technology

[0003] At present, ladle bakers in metallurgical enterprises generally use large, medium and small fires for combustion, and cannot be baked strictly according to the temperature curve of refractory materials. Because the valve positions of the gas control valve and air control valve are fixed at large, medium and small fires However, the calorific value and pressure of the gas fluctuate in actual work, it is difficult to ensure a reasonable air-fuel ratio during the baking process, the gas cannot be completely burned, and it is impossible to achieve a reasonable fuel supply in accordance with the temperature rise requirements of the refractory material, resulting in baking The temperature deviation of the process is large, and the waste of gas is serious

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