Menetelmä ja järjestely hienonnusprosessin ohjaamiseksi

The present invention relates to the field of mineral and metallurgical processes, to comminution processing or disintegrating in general and to comminution processing by crushers and tumbling mills, and more particularly to a method and arrangement for controlling of a comminution process. An arrangement for controlling of a comminution process according to the present invention has a system for monitoring the flow of ore (11) before entering a grinding circuit (10), (19) of said comminution process, which said monitoring system of said controlling arrangement comprises an imaging system (12), (20), said imaging system (12), (20) measuring 3D reconstruction measurement data (21) for reconstruction of a three-dimensional image profile (32) of said ore (11); which said controlling arrangement comprises a control block (27), (46) receiving a calculated rock size distribution data (23) of said ore (11), said rock size distribution data (23) being calculated based on said measured 3D reconstruction measurement data (21); and which said control block (27), (46) receiving one or more distinct property values for one or more rock size variables said one or more distinct property values being calculated based on said measured 3D reconstruction measurement data (21).