Unloading cement and fine powders
Cement locks itself in during discharge. Chalk, lime and apatite concentrate behave the same way. The answer is external vibration: the VH-500 on rail, the Rockhammer RH-200 in storage.
Why fine material stops flowing
Cement is a fine-grained material: as it discharges through the hatches of a cement wagon it compacts and locks itself in — external impact is required. The same happens with chalk, lime and apatite concentrate.
Why bolt-on eccentric vibrators are not enough
Bolt-on eccentric vibrators are the usual choice for wagons, but they do not help clean the wagon of residue. The VH-500 handles that on rail, and the Rockhammer RH-200 in storage.
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