Arrangement for registering the instant grinding charge...

Details Arrangement for registering the instant grinding charge... Arrangement for registering the instant grinding charge...

B - Operations, Transporting

02

C

B02C 17/18 (2006.01) B02C 17/20 (2006.01)

Patent

CA 2088992

13 ABSTRACT The invention relates to an arrangement for recording the instant volume of grinding charge in the mill drum of a rotary drum mill of the kind provided with an internal lifting device. In order to enable the volume of grinding charge to be used in a better way as a parameter for controlling mill operation, it is pro- posed, among other things, that the lifting device (7) is resilient and is provided with a load detecting device (12) which, during each drum revolution, detects when the lifting device comes into engagement with, and is in engagement with the grinding charge present in the drum (4) and leaves, or is caused to leave, engagement with the grinding charge. The arrangement also includes a tension sensing device (19) which registers the ten- sion on the load detector, this tension being contingent on the load to which the lifting device is subjected by the grinding charge. (Figure 2).

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