Hi Py Kod and Py Nat,
As we move along, we will soon need to figure out the operation plan to manage the rejects within the tube press operation
There are mainly two rejects:
1) Reject 1 (from the reject plough after the metal detector): This reject prior crushing would be same moisture as product, but bigger in size (15mm thk sheet, size 400mm x 100mm). Most likely contain metal, which is the reason it was triggered by metal detector to reject it. We should always examine this reject, to find out the root cause and the origin of the metal. This is also an important aspect for preventive/ corrective maintenance diagnosis.
2) Reject 2 (from the drop conveyor, to dispose wet drop): Sometimes when the filter/bladder was damaged (or the pressing pressure too low, pressing time too short and other reasons that you will soon learn in Rocks plant), we would experience wet drop (from tube press). We would need to discharge the wet drop at the other end (near the product bin) by reversing the drop conveyor. This reject would be wet, ranging around 30-50% moisture (mud form).
Prior commissioning, we need to plan how operation would transfer, recycle and reuse, dispose these rejects. And according to the operation arrangement, the project could incorporate suitable container for these rejects.
The earlier assumption was to provide basic frame holding a 1 ton bulk bag to keep these rejects. And then operator can move this with forklift. We should now re-examine the operation plan (I am not sure if we have a forklift around the area), and make adjustment early if needed.
I hope you can assist to facilitate discussions among operation team, and let us know what kind of container would be suitable with the operation arrangement