A ROTARY CHARGING DEVICE FOR A SHAFT FURNACE AND METHOD FOR UPGRADING SUCH A DEVICE

摘要

A rotary charging device for a shaft furnace commonly comprises a rotary distribution means for distributing charge material on a charging surface in the shaft furnace. A rotatable structure supports the rotary distribution means and a stationary support rotatably supports the rotatable structure. According to the invention, the charging device is equipped with an inductive coupling device including a stationary inductor fixed to the stationary support and a rotary inductor fixed to the rotatable structure. The stationary inductor and the rotary inductor are separated by a radial gap and configured for achieving contact-less electric energy transfer from the stationary support to the rotatable structure by means of magnetic coupling trough the radial gap.