method and arrangement for a power anturiju00e4rjestelylle in mineral and metallurgical prosessilaitteessa, and anturiju00e4rjestely in a mineral and metallurgical prosessilaitteessa

摘要

The present invention relates to the field of mineral and metallurgical processes, and more particularly to a method and arrangement for providing power to a sensor arrangement on a large rotating mineral and metallurgical grinding mill, and to a sensor arrangement on a large rotating mineral and metallurgical grinding mill. An arrangement for providing power to a sensor arrangement (6), (20), (25) according to the present invention has a transmitting unit (12), (14), (22) arranged outside said large rotating mineral and metallurgical grinding mill, said transmitting unit (12), (14), (22) having at least one transmitting coil element (13), (15-18) for creating an alternating electromagnetic field to said at least one transmitting coil element (13), (15-18) for transmitting inductive charge to an at least one receiving coil element (7-11), (21), (26); and an at least one receiving coil element (7-11), (21), (26) for taking power by receiving inductive charge, said at least one receiving coil element (7-11), (21), (26) being arranged at the shell surface (5), (19), (24) of said large rotating mineral and metallurgical grinding mill, wherein said at least one transmitting coil element (13), (15-18) of said transmitting unit (12), (14), (22) is arranged close to the said at least one receiving coil element (7-11), (21), (26) at the shell surface (5), (19), (24) of said large rotating mineral and metallurgical grinding mill.