Measurements of Blast Furnace Inner-States by Magnetometer

Abstract

We present in this paper a new and direct method of measuring the inner-states of the blast furnace. The key point of this method is that a number of magnetometers installed in the furnace detect the layers of the ores and coke through a disturbance of the magnetic field distribution. By processing the outputs from these multi-magnetometers, we can have various important clues for the control of the blast furnace, such as the falling speed and the thickness of the layers, etc. We develop the magnetometer suitable for the application, which is made of a small Mo permalloy film.