How a Custom Crusher Liner Doubled Throughput at Brumadinho

At an iron ore operation in Brumadinho, Minas Gerais, one change to the shape of a cone crusher’s wear liner did something no new machine was asked to do: it more than doubled the tonnage processed between each replacement. No bigger crusher. No extra horsepower. Just geometry.

That result is a window into a quiet problem running through mineral processing. Wear components, the metal liners that grind and shape ore inside a crusher, are routinely treated as consumables to be bought, worn out, and swapped. Treated differently, they become a performance variable that sets equipment availability, cost per tonne, and how predictable production actually is.

Here is how to read a single wear component outcome as a signal of how operationally mature a processing asset really is, and what the Brumadinho numbers mean for how these decisions should be judged across the sector.

What the Brumadinho numbers actually measure

Start with the baseline. Before the intervention, commercially available liners on the crusher lasted around 2.8 operating days and carried the circuit through roughly 21,000 to 27,000 tonnes before they had to be replaced, according to data published by Máquinas Furlan in Revista Minérios in October 2026.

After the redesign, the same 400 hp cone crusher, running in the secondary crushing circuit, held up for 5.16 operating days of continuous use and pushed more than 44,000 tonnes through each replacement interval.

Put side by side, the two sets of figures draw their own conclusion.

The 85% lifespan extension and 104% throughput increase are not marketing claims. They are the measured consequence of one engineering intervention: a corrugated liner geometry redesign paired with an increase in the metallic mass of the components.

The governing result of the case: a 104% rise in tonnage processed between replacement cycles, delivered without a single capital equipment purchase.

The read for operators and investors is specific. Equipment capacity was never the constraint at Brumadinho. The rate at which liner wear forced the circuit to stop was. The most consequential variable in this circuit turned out to be a component-level engineering decision, not a decision about buying a bigger machine.

That gap between 21,000 tonnes and 44,000 tonnes per cycle is not a rounding difference. It is the difference between two entirely different production schedules running on the same physical asset.

Why liner geometry determines throughput, not just component life

To understand why geometry carried that much weight, you have to look at how liners actually fail. They rarely wear out evenly across the whole surface. Instead, wear concentrates in a narrow zone, driving one patch of liner down to its minimum safe thickness while most of the surrounding metal is still perfectly usable.

When that happens, the liner gets scrapped early. You are throwing away good steel because one band wore through first.

Three mechanisms drive this concentration:

• Mismatched cavity geometry. Metso’s HP Series application guide notes that when the cavity profile does not suit the feed size distribution or the crusher runs outside its recommended closed-side setting, wear concentrates in a small zone and forces replacement before the liner is fully worn.
• Poor feed distribution. When material is not presented evenly into the chamber, contact pressure and sliding build up in limited regions rather than spreading across the surface.
• Particle motion dynamics. The impact, sliding, and compression paths that particles travel through the chamber dictate where load accumulates, and that pattern decides where the steel disappears fastest.

The particle motion dynamics inside a cone crusher, specifically how material slides, impacts, and compresses through the chamber, are the subject of extensive applied engineering work; crusher chamber design determines not just wear distribution but the throughput ceiling an operation can reach without adding capital equipment.

A published liner-wear prediction model, which links wear directly to the motion characteristics of material inside the chamber, shows that redesigning geometry to influence those particle flow paths can reduce sliding abrasion and spread impacts more evenly. That is the mechanism the Brumadinho corrugated profile was built to exploit.

The cost of ignoring it is quantified. Nesans India reports that poor wear patterns cut liner life by 30 to 50%, effectively doubling cost per tonne when a liner fails at 100,000 tonnes instead of its designed 200,000. There is also a hard floor: running a liner below 25 mm thickness, per Crusherglobal, risks damaging the crusher frame itself.

What this tells you is that liner life in abrasive ore is not primarily a materials question. It is a geometry question. The right diagnostic starting point is measuring where wear concentrates, not simply ordering a harder alloy and hoping for the best.

From wear pattern analysis to chamber redesign

The Brumadinho result did not come out of a catalogue. Furlan’s technical team first observed the wear patterns on the existing liners, then assessed the specific ore characteristics and the crusher’s operating conditions, and only then developed the corrugated geometry to match.

That sequence matters. It is an application-specific diagnostic process, starting from real operating data and working toward a design, rather than selecting a part number and installing it.

For production planners and capital allocators, this reframes liner-related downtime entirely. It is a solvable engineering problem with an identifiable root cause, not an unavoidable tax on operating in abrasive ore.

The economics of wear component strategy in iron ore circuits

The engineering explains the how. The economics explain why it was worth doing.

Wear parts, liners chief among them, account for 40 to 60% of total cone crusher maintenance cost, according to a February 2026 technical breakdown by mining engineer Ibrahim Abu-Zaben. That makes liner strategy one of the largest controllable cost variables in any secondary crushing operation.

The procurement context matters here: wear parts procurement in high-throughput hard rock circuits has shifted from a purely transactional activity toward a performance contract model, where liner selection criteria and replacement schedules are negotiated as part of broader operational agreements rather than treated as spot purchases.

Wear parts represent 40-60% of total cone crusher maintenance cost, the single largest line item an operator can directly influence through design.

Then there is availability. Best-practice iron ore circuits target the low-90% range; Cooper’s Crushing and Screening documented a 92% availability figure at an iron ore process plant in September 2026, enabled by predictive maintenance and scheduled liner replacement. Every liner replacement event, by contrast, costs 24 to 36 hours of production, per Nesans India.

Now the arithmetic connects. Fewer replacement stops means more operating days on the same equipment, which is simply higher circuit availability with no capital spent. A 104% gain in throughput per interval is also a roughly halved frequency of those 24-to-36-hour shutdowns.

Brumadinho is not the only data point. HUATAO Group reported in 2026 that optimised liner geometry cut cost per tonne by 47% and lifted processed tonnage per set by 30% against OEM profiles, against an iron ore liner life benchmark of 800 to 1,200 hours.

For investors assessing an iron ore processing asset, wear component strategy works as a proxy for operational engineering maturity. Assets that design liners to their specific ore and track replacement intervals systematically will carry lower per-tonne costs and higher availability than peers reaching for catalogue replacements.

That turns the Brumadinho case from an engineering anecdote into a capital allocation signal. Where wear parts eat 40 to 60% of crusher maintenance spend and each change costs a full shift of production, a doubling of throughput per interval has a direct, calculable effect on the cost-per-tonne profile.

When custom geometry is worth the engineering investment, and when it is not

None of this means custom liners are always the answer. The honest position is that application-specific geometry is a high-conviction decision, justified under defined conditions and wasteful outside them.

The conditions that justify the engineering investment are reasonably clear:

1. High ore abrasiveness with evidence of localised wear. Iron ore, copper ore, granite, and basalt are the environments where liner wear becomes a dominant cost item, and the case strengthens where wear patterns already show premature failure zones.
2. High-throughput circuits where cost per tonne is materially sensitive to liner life. The more tonnes running through, the faster a longer-lived liner pays back its development cost.
3. A documented wear pattern showing systematic premature failure. Nesans India frames this directly: where wear is uniform and designed life is achieved, standard liners are adequate; where it is not, redesign is justified.

The risks are just as real, and worth naming plainly:

• Ore variability. A geometry optimised for one ore hardness or feed size can turn sub-optimal if conditions shift. HUATAO’s own data shows wear life differing sharply by ore type, from 800 to 1,200 hours for iron ore versus a reported 1,200 to 1,800 hours for copper ore (the copper figure unverified), which illustrates how sensitive a design is to its operating envelope.
• Monitoring discipline. Custom profiles only deliver their economics if wear is measured consistently. Without it, the benefit evaporates.
• Stocking complexity. Unique profiles need dedicated patterns, tooling, and inventory, which adds operational drag.
• Capital-damage risk. Running a liner past the 25 mm minimum thickness, per Crusherglobal and Maysco, risks frame damage, converting a cost-saving programme into a capital-repair bill.

Standardised OEM liners remain the right call in lower-abrasion applications where wear is uniform and predicted life is achieved, and in operations where fleet standardisation and parts logistics matter more than incremental performance.

The monitoring obligation that custom programmes require

Custom geometry without measurement is money spent on faith. The regime that makes it pay is specific: weekly liner thickness checks, tonnage tracked per liner set, and wear rate calculated in millimetres per 10,000 tonnes, as both Crusherglobal and Nesans India set out.

The monitoring obligation described here, weekly thickness checks, tonnage tracking, and wear rate calculation, is the operational expression of a broader life cycle asset management philosophy that replaces reactive maintenance with structured, data-driven intervention schedules across the full equipment lifespan.

This is the non-negotiable part. Operators who fund the engineering but skip the measurement programme are unlikely to capture the full benefit, and may not notice when a liner has worn past its safe limit.

For investors, this hands over a clean diagnostic. Has the wear pattern been formally analysed, are replacement criteria defined and tracked, and was the geometry built from real operating data? Those three questions separate a genuinely optimised programme from a well-marketed one.

What the Brumadinho result signals for the sector, and where the logic leads

The Furlan case is one documented instance of a broader shift. Across 2024 to 2026, mineral processing has moved steadily toward application-specific wear solutions, predictive maintenance integration, and cost-per-tonne optimisation, and Brumadinho sits squarely inside that trajectory.

The direction is backed by economics. A Patsnap analysis reports that strategic wear-part management combining predictive maintenance and bulk procurement can cut total ownership costs by 20 to 30% against reactive approaches (figure unverified), while premium wear-resistant materials cost 30 to 60% more than standard components but deliver two to three times the service life in high-abrasion duty.

McKinsey’s mining productivity analysis identifies comminution as one of the highest-impact subsectors for technological improvement, framing rising costs and declining ore grades as the twin pressures forcing operators to extract more value from existing equipment rather than simply adding capacity.

Máquinas Furlan framed its own result around a single integration: equipment engineering, foundry expertise, and application engineering working together, with field validation feeding back into the design. As Revista Minérios put it, wear components have moved from purely consumable items to strategically important elements in mining operations.

How widely this spreads depends on three variables: whether operators have application engineering capability on hand, whether monitoring infrastructure is in place, and whether margin pressure on iron ore sharpens the economic calculus further.

For investors running due diligence on a processing asset, the Brumadinho logic implies three questions worth asking:

• Have the wear patterns on the crusher been formally analysed?
• Is the liner geometry application-specific, or lifted straight from a catalogue?
• Is a structured replacement-interval tracking system actually operating?

The signal underneath all three is that the gap between operations using standard catalogue liners and those deploying engineered geometry with predictive monitoring compounds over time. The Brumadinho numbers put a concrete scale on what that compounding looks like.

Reading liner strategy as an operational quality signal

One geometry change on a single crusher at Brumadinho doubled the tonnage processed between liner replacements and extended component life by 85%.

The throughline is what makes it matter. That improvement did not come from a capital expenditure decision. It came from an engineering decision about geometry, validated by field measurement, and that is the model the sector is moving toward.

For the investor and operator audience, the conclusion is direct. Liner strategy has become a due diligence variable, and operations that have made the engineering investment are better positioned than peers that have not.

As ore grades decline and margin pressure on iron ore operations builds, the assets that have optimised the cost-per-tonne levers they actually control will carry a structural advantage over those still treating wear parts as an afterthought.

The structural argument for liner optimisation sharpens as margin pressure on iron ore intensifies; supply-side constraints and shifting steel demand patterns have compressed the price bands that once made cost-per-tonne inefficiencies tolerable at high-volume operations.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Past performance does not guarantee future results, and several figures cited above are noted as unverified in the underlying research.