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Research on optimizing ladle baking process in steel mills

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Description: In the process of ladle baking and preheating, the baking temperature is particularly critical. The baking bun is unstable, which will cause a lot of energy waste and even the noise lining damage of refractory materials, and affect the service life and safe operation of the ladle.

Keyword: Steel ladle temperature measurement, infrared thermometer

ladle furnace

Project idea:

In the process of ladle baking preheating, if the baking temperature is too high, it will waste energy and reduce the service life of refractory materials; if the temperature is too low, the steel water temperature will drop too much and affect the quality of steel. Therefore, the temperature monitoring in the ladle baking process is very important. The traditional temperature measurement method is to use the thermocouple to measure the temperature of the discharged gas instead of the temperature of the resistant material to control the preheating process. This control method is very inaccurate and very inefficient. Because of the lack of effective temperature measurement means, the operator by experience, the quality of the baking bag is unstable, and will cause a lot of energy waste and even the noise lining damage, affecting the service life and safe operation of the ladle.

Characteristic of project: 

Infrared thermometer is installed on the original bag baking device, and the infrared temperature measuring device is installed in the form of optical fiber to directly measure the temperature of the coating-resistant material online, without the interference of flame, water vapor and heat radiation, and realize the temperature closed-loop control. And the temperature curve and gas flow of the whole baking bag process were recorded, the collected data was analyzed, the adjustment plan was formulated, and the special personnel were arranged to adjust the gas flow operation. It can improve the consistency of the baking temperature, usually reduce from the temperature difference to less than 50℃ to stabilize the condition of the standby bag; reduce manual inspection and operation quantity, basically maintenance free, no consumables and wearing parts, and no late input; realize the continuous measurement of the coating temperature to reduce the safety risks of personnel.

Project benefits: 

Through accounting, under the premise of the ladle temperature meeting the control requirements, the gas can save 30%, and can create 3.55 million efficiency per year.

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As professional one-stop solution provider, LIAONING MINERAL & METALLURGY GROUP CO., LTD(LMM GROUP) Established in 2007, and focus on engineering research & design, production & delivery, technology transfer, installation & commissioning, construction & building, operation & management for iron, steel & metallurgical industries globally. 

Our product  have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time.

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As professional one-stop solution provider, LIAONING MINERAL & METALLURGY GROUP CO., LTD(LMM GROUP) Established in 2007, and focus on engineering research & design, production & delivery, technology transfer, installation & commissioning, construction & building, operation & management for iron, steel & metallurgical industries globally. 

Our product  have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time.

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