DR Congo mill expansion: add ball mill or screening first?
Samuel O.
Verified member · Service engineer
Today we run two crushing stages plus one ball mill at 800 t/day and want 1,200 t.
We suspect screening: the undersize runs coarse, mill feed is too big and throughput stalls.
Budget covers one stage only. If we add screening first, will the mill choke even more?
Discussion (3)
Paulo M.Verified member · Project chief engineer2026-10-22
Start with a screening efficiency test. If undersize is more than 15% coarse, screens and spray water both need work, and the fix is cheap.
Mwila K.Verified member · Mine equipment manager2026-10-23
We expanded screening first and mill throughput rose 18%, but the feed bin was too small and we had to add a conveyor later. Count both.
Chanda M.Verified member · Service engineer2026-10-24
Adjust mill liners and ball charge at the same time; screening alone will not lift output while the mill stays under-loaded.
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