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Progress must come from structural changes and practical improvements in day-to-day operations. One overlooked area is abrasive slurry duty, where water use, reliability and maintenance exposure intersect on production-critical assets.

Why slurry duties matter for water, risk, and performance

Abrasive slurries accelerate wear, particularly around sealing arrangements and shaft protection. Frequent interventions increase safety exposure through intrusive work on large equipment and raise the probability of unplanned downtime on critical-path assets.

The reliability challenge is well documented. Pump failures can account for up to 40 percent of unplanned downtime in mining and mineral processing plants. More broadly, over 80 percent of industrial businesses experienced unplanned downtime in the last three years, with each incident lasting an average of four hours.

Some estimates put downtime at $ 180,000 per incident and suggest mining manufacturers allocate 35-to-50 percent of annual budgets to maintenance

For mining operations, the financial exposure can be high. Some estimates put downtime at $ 180,000 per incident and suggest mining manufacturers allocate 35-to-50 percent of annual budgets to maintenance. Slurry pumping is also energy intensive, with research indicating slurry pumps account for eight-to-12 percent of a mineral mine’ s total energy consumption.

Taken together, these figures reinforce that if slurry pumps are not performing reliably, the consequences cascade into production risk, safety exposure and avoidable consumption.

The water issue hiding in plain sight

Clean flush water is commonly used to support mechanical packing and seal performance in slurry applications and can be treated as a utility requirement. However, it still carries a cost and operational footprint, especially where water is scarce or tightly managed.

Even where supply is available, the full burden can include treatment and distribution energy, monitoring requirements and constraints on reuse. Reducing that demand is a practical lever for mines trying to lower operating impact without compromising reliability.

A real-world example from an underflow thickener pump retrofit

A recent retrofit on a large underflow thickener slurry pump at a major copper mining operation shows what this can look like in practice.

The underflow thickener pump formed a critical part of the tailings handling system, moving high-density slurry into the tailings transport system. The pump was operating at approximately 65 percent solids, where reliability is essential and interruptions can quickly become a production issue.

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