Mining and mineral processing pump some of the most abrasive fluids handled anywhere in industry: cyclone feed, tailings transfer, concentrate lines. A pumping system that runs three years on clean water may need liner and impeller replacement in three months on slurry. The engineering response is systematic — velocity, materials and layout treated together — and it applies as much to the valves and piping as to the pumps.
Wear in slurry service scales steeply with velocity. Suction and discharge lines are sized for a settling velocity that keeps solids suspended without sanding, then kept near the lower end of that window in long straight runs. Every velocity excess in a discharge line is paid for directly in pipe and valve life, which is why slurry system designers derate pump speed — often via belt drive — rather than trimming with throttling valves.
System layout matters as much as component selection: long-radius bends, avoiding dead legs where solids pack, and sump designs that prevent settling during shutdown. Seal water systems — gland water on slurry pumps — need the same reliability attention as the pumped fluid itself; a lost gland water supply converts a seal change into a wet-end rebuild.
Tailings and concentrate duty rewards buyers who specify wear-life hours and wet-end replacement intervals alongside capital cost. Vendors with genuine slurry experience will quote achievable wear life by duty point and material; vendors quoting only price will be repriced by the maintenance team within a year. For EPC teams designing a new concentrator, the pump-and-valve wear philosophy deserves the same review rigor as the process design itself.