SEARCH

Backaground

As an important container for transporting molten steel and conducting secondary metallurgical reactions in the converter and continuous casting sections, the management and scheduling of the ladle play an important role in optimizing the operation and energy saving and consumption reduction of the steel plant. The ladle consists of a barrel, a lining, a nozzle opening and closing device, and a breathable brick.

The main function of the ladle is to receive the molten steel and part of the slag flowing out of the tapping door of the primary steelmaking furnace (converter or electric furnace). The molten steel can be calmed for a period of time to adjust the temperature of the molten steel, even the composition, and float the non-metallic inclusions in the molten steel. At the same time, the steel flow is opened and closed during the pouring process to control the flow of molten steel and liquid steel to ensure smooth pouring.

In recent years, major accidents caused by safety hazards such as overheating of molten steel (iron) piercing the ladle, severe wear of the ladle lining, and fatigue damage in the ironmaking and steelmaking processes of the metallurgical industry have frequently occurred, posing a serious threat to production safety.

Practice has shown that the initial defects of the ladle lining will gradually develop from point to surface until complete failure. When the lining peels off in the early stage, the temperature of the peeling point area will be abnormally high, and the temperature of the defective area will be significantly higher than other locations. Therefore, the use of infrared thermal imagers to achieve online rapid detection and diagnosis can timely detect abnormal temperature changes of equipment, locate defective parts, and promptly avoid safety accidents to ensure normal production operations.

Advantagies

• It has all-weather passive thermal imaging function;
• Adopts a self-developed temperature measurement and correction algorithm via the thermal infrared camera to achieve accurate temperature measurement;
• It has strong environmental adaptability and can be used in harsh environments such as high temperature and high dust;
• Automatic identification of package number and intelligent association of temperature data;
•  360° all-round temperature detection of the package via a thermal camera, with a 3D schematic diagram showing the temperature field distribution;
• Automatic positioning and warning of 1 square decimeter high temperature area;
• Establish a corresponding model between the refractory material of the package and the surface temperature of the package;
• Establish a surface temperature database for each ladle use cycle;
•  Open interface with a thermo camera-compatible SDK development package, enabling connection with DCS, PLC, and other systems.

Benefits brought

• 

  Automatic identification of package number and intelligent association of temperature data

• 

  Establishing a corresponding model between the refractory material of the ladle and the surface temperature of the ladle

• 

  Automatic positioning and warning of 1 square decimeter high temperature area