| 摘要 |
Method for continuously measuring the thickness of the liquid slag (4) on the surface of a bath of molten metal (2) in a metal container (1), the liquid slag being included between a first liquid slag/powder interface (13) and a second molten metal/liquid slag interface (3). According to the invention, the following operations are carried out: a) two temperature sensors (7', 8') are immersed in the liquid slag, keeping the difference in level between these two sensors constant; b) the temperature of the molten metal/liquid slag interface is determined; c) the gradient of the variation in temperature as a function of level is determined; and d) the difference in level corresponding to the difference in temperature between the isothermal temperatures of the two interfaces (3, 13) is calculated by extrapolation. Preferably, one of the sensors (7') is slaved at a position on an isothermal line by varying its level to keep its measured temperature constant. Application to the melting of steel. <IMAGE>
|
