When liquid steel is tapped from a basic oxygen (BOF) or electric arc (EAF) furnace, it is advantageous to minimize the quantity of slag carried over into the ladle. Measuring the pouring stream average temperature during the pour can be a challenge with the presence of slag and oxidation.
Previously this has been done by visual observation of the tapping stream or by the use of electromagnetic induction coils mounted onto the furnace. However, neither of these methods has proven to be entirely reliable.
LumaSense Technologies supplies complete systems designed specifically for this application. Our MIKRON thermal imagers provide a controlled field of view, aimed at a specific region of the pour as it exits the furnace. Our pyrometer solutions can monitor the pouring stream under varying widths and determine the average and maximum temperatures.
- Slag Detection at the Steel Furnace
The highly precise detectors in our process thermal imaging cameras and pyrometers detect the variances in the signature radiance of the molten pour. When the signature percentage reaches a preset limit the pour can be terminated. By limiting the pour precisely, a minimum amount of slag is introduced. The length of the pour is also maximized allowing for more workable product for a given amount of energy.