Filtration beyond mining

A filtration business that had run out of mining

Industrial filtration equipment has a natural home in mining and minerals processing. Ore is crushed, leached and dissolved into slurry, and somewhere in every one of those flowsheets a machine has to pull the solids back out of the liquid. That is a good business, and it is a mature one.

Our client, a €5B global industrial machinery company, sells into it. Its leadership wanted a fact‑based view of which markets outside mining could drive filtration equipment growth, and it wanted that view before a board strategy review eight weeks away.

Three things stood between them and the answer, and none of them was a lack of ability.

The view was fragmented. Customer feedback existed, in quantity, across Europe, the Americas and Asia Pacific. It sat with local teams. Nobody had put the three regions on one page, and so nobody could say where the company was actually strong.

There was no bandwidth. A global study of end markets, competitors and customers is several hundred hours of work. That capacity did not exist anywhere in the organisation without taking people off the business they were already running.

The clock was the real constraint. Eight weeks. The Industrial Filtration Director needed a data‑driven growth plan before the board met, not after.

This is the shape of problem an augmented analyst team exists for. It is not that the client could not do the work. It is that the work would have taken four to six months alongside everything else, and the board meets in eight weeks.

Why “which markets are growing?” is the wrong question

A component supplier sits one or two steps removed from the demand it depends on. The company does not sell lithium. It sells a machine that appears inside a lithium refinery. So the growth of the lithium market is only loosely related to the growth of its own opportunity, and the gap between the two is where the analysis lives.

A market that quadruples in a country you cannot sell into has not grown at all, from where you are standing.

Four things break the naive answer.

Growth and access are different variables. The fastest‑growing battery materials are also the most geographically concentrated, and the concentration is in a market this company does not serve. A market can quadruple and remain closed.

Not every process step is a filtration step. Within a single flowsheet, some stages carry heavy solid‑liquid separation duty and some carry none. Sizing the whole market treats those as equivalent. They are not.

Not every product in a market is a filtration product. Second‑generation biofuels are a category, not a process. Four of the nine products in that category are gas‑phase and need no liquid filtration at all.

Public data is built for a different purpose. Trade statistics record exports, not production. Capacity databases record announcements, not output. Country‑level data for the largest producer in several of these markets is not published at all. Every number in this study had to be built with its own caveat attached, and we kept the caveats visible rather than smoothing them away.

The growth story and the addressable story are different stories

The battery metals chapter is where this study started, because it is where every filtration vendor’s attention was in 2026, and because it turned out to be the clearest illustration of the trap.

The demand case is not in doubt. Under a pathway aligned to the Paris Agreement, global EV battery demand rises from 860 GWh a year in 2023 to about 4,350 GWh a year in 2030, roughly fivefold. The critical minerals underneath that rise from 2.2 to 7.8 million tonnes a year over the same period, a compound rate of about 20 per cent.

What this changes in practice. The instruction that came out of this chapter was not “enter battery metals”. It was “track the European and North American project pipeline, and be present at the point where those projects choose their process route, because the decision that matters happens years before the plant is built”.

So far this reads like an obvious market to enter. The trap is in the second column of the next exhibit.

For each of the six battery materials we set 2023 supply against 2030 demand, which is the gap the industry has to close and therefore the plant building that has to happen. Then we set that gap against where the refining capacity actually sits. The two do not line up.

Graphite quadruples and China holds up to 92 per cent of the high‑purity anode material market. Manganese refining is 93 per cent Chinese. Lithium chemical production was 70 per cent Chinese in 2024 and is modelled at 62 per cent in 2030, which is a fall in share on top of a near‑doubling in volume. Nickel refining is 72 per cent Indonesia and China combined.

For a European equipment maker with no meaningful Chinese sales position, the battery metals chapter reads very differently once that column is attached. The volume is real. Most of it is not addressable. The parts that are addressable are the western and European projects, and those are almost all in development rather than in operation, which makes them a pipeline question rather than a revenue question.

Regulation manufactures addressable market where geology does not

If the addressable share of battery metals is small because refining sits in China, then anything that moves refining out of China is directly a market‑creation event. In Europe there is a specific piece of law doing exactly that, and it is unusually legible because it comes with numbers attached.

The European Critical Raw Materials Act, Regulation (EU) 2024/1252, covers lithium, nickel, cobalt, graphite and manganese. It sets benchmarks for the share of the EU’s own annual demand that the EU intends to cover domestically by 2030.

The extraction benchmark is 10 per cent. The processing benchmark is 40 per cent. That ratio is the commercial content of the Act.

Read those six numbers as a filtration vendor and the shape of the opportunity is unmistakable. The extraction target is the smallest of the three. The processing target is four times larger, and the recycling target two and a half times larger. Processing and recycling are precisely where the solid‑liquid separation, the water loops and the residue handling sit. Extraction, from an equipment point of view, is somebody else’s machine.

The permitting clock does something more useful still. A 15‑month cap on processing and recycling permits, against 27 months for extraction, means the European projects that will actually get built first are the ones in the part of the value chain this company serves. And designation as a Strategic Project is a public signal, which makes the pipeline observable rather than a matter of guesswork.

Two European projects made the point concretely. A lithium hydroxide converter under construction in Germany cites Strategic Project status directly. A battery recycling operation in Finland running a hydrometallurgical route is already in operation and positions itself as EU battery‑metals supply. Neither is a mine. Both are filtration‑intensive.

Size the market at the duty, not at the gate

Alumina is a 142 million tonne market growing at a low single‑digit rate. As a market‑entry proposition that is unexciting: large, mature, slow. That framing is wrong, and the reason it is wrong is the most transferable idea in this study.

Alumina is not one filtration market. It is three separate duties inside a single refinery, and one stage that carries no duty at all. We mapped the Bayer process stage by stage and put the separation equipment against each stage.

One finding we did not expect. One of the filter types this company sells does not appear anywhere in the public process literature for this flowsheet. Not as a competitor product, not as a generic category, not in the trade press. Either the public record is incomplete, or the machine is being specified through channels the desk research cannot see. Both possibilities are commercially interesting and neither could be settled from a desk. We flagged it rather than resolving it, and it became one of the questions taken into the customer interviews.

Eight distinct filtration duties across three stages, each with a different machine and a different wear profile. A 142 million tonne market is not one addressable line, it is eight, and the company sells into most of them.

The same exercise reframed the sizing question. Bauxite production grew about 5 per cent a year over the last decade to 428 million tonnes in 2024, and roughly 85 per cent of bauxite ends up as alumina. Alumina itself grew about 3 per cent a year to 142 million tonnes. Those growth rates are unremarkable. The number of separation duties per tonne is not, and it is the second number that determines the equipment opportunity.

Screen by process, before you screen by growth

Second‑generation biofuels are fuels made from non‑food biomass: agricultural residues, energy crops, forestry waste. The category grows at about 8 per cent a year to 2030 on the base case, from 1.9 to 3.0 million tonnes. As a headline, that is the fastest‑growing non‑mining market in this study apart from the two battery outliers.

The headline is not usable, because “second‑generation biofuel” is a policy category rather than a process. It contains nine products running down two conversion pathways, and only some of them separate solids from liquid at all. So before sizing anything, we placed every product on a single axis: how much solid‑liquid filtration duty does its process actually contain?

Half a market that has no use for your machine is not half a market. It is noise with a growth rate attached.

Four of the nine products fall away immediately. Biogas, biomethane, syngas and methanol are gas‑phase problems: they need gas cleanup, not liquid filtration. Butanol separates mostly by distillation. That leaves cellulosic ethanol, sustainable aviation fuel, Fischer‑Tropsch liquids and bio‑oils, which is where the plant‑level work then went.

This screen took a morning. It removed roughly half a category from the sizing workload before any data was gathered, and it is the reason sixteen markets fitted into eight weeks. It also produced a better answer, because the 8 per cent growth rate attaches to the whole category, and the growth rate of the filtration‑relevant half of it is a different and more useful number.

A market with no plants you can reach is not a market

Phosphates are the counter‑example to battery metals: unglamorous, slow, and considerably more addressable. They are also where the gap between global volume and served volume is easiest to see, so we use them here to show the arithmetic plainly.

Global phosphate rock production reached 230 million tonnes in 2024, growing about 1.6 per cent a year over the decade, with Africa and East Asia holding roughly 75 per cent of it. From that rock come four processed products, and each was sized separately.

Why the plant list is the deliverable, not the market size. A market‑size chart tells a strategy team whether to be interested. A list of named plants with process routes and capacities tells a regional sales manager who to call on Monday. The second is worth more, and it is the part that cannot be bought from a market report.

Phosphoric acid is a 90 million tonne market of which 59 million tonnes sits in the served regions. Mono‑ammonium phosphate is 32 million tonnes of which 25 is addressable. Di‑ammonium phosphate is 35 million tonnes of which 23 is addressable. Growth across all three is close to flat: phosphoric acid at about 1.3 per cent a year over the decade, DAP at 0.7 per cent.

Triple superphosphate is the one the study recommended dropping. It is a 5.8 million tonne market globally, it has been shrinking in Asia Pacific at more than 5 per cent a year and in Europe has almost disappeared, and what remains sits overwhelmingly in the residual regions rather than the served ones. Small, declining, and in the wrong places. That is three reasons to spend the sales resource elsewhere, and it was written into the report as a plain instruction rather than left for the reader to infer.

Underneath the tonnage sits the plant census, and this is where a market‑size number becomes a sales target. Across the whole study we catalogued more than 350 named production and processing sites, each with its operator, location, process route, operating status and capacity. In phosphates specifically, the served regions resolve to a small and completely nameable set: two large DAP plants in Vietnam, four sites across France, Italy, Turkey and Finland, and two very large integrated operations in the United States.

Scale and growth almost never sit in the same market

Put all sixteen markets on one page and the pattern is immediate. The three fastest‑growing are battery materials, and all three are the least addressable. The three largest by tonnage are mature industrial minerals growing at low single digits. There is no market in this study that is both large and fast, and any strategy that went looking for one would have come back empty.

What the grid is for is not picking a winner. It is making the trade‑off explicit, so that the steering committee argues about the right thing.

Three readings came out of this page, and each of them changed a conversation.

The high‑growth markets are small. Calcium carbonate made from captured carbon dioxide grows at about 79 per cent a year, which is the fastest rate anywhere in the study. It reaches roughly 1.6 million tonnes by 2030, against a total calcium carbonate market of about 11 million tonnes. A 79 per cent growth rate on a 14 per cent share is a genuine opportunity and a poor place to point the whole sales organisation.

The mature markets are not uniform inside. Active pharmaceutical ingredients grow at about 3 per cent overall. Within that, specialty and high‑potency ingredients are about 5 per cent of global tonnage and grow at roughly 9 and 11 per cent against 2.6 per cent for bulk. The market average is the least informative number available about it.

Some markets are closing. Kaolin peaked in 2021 and is structurally constrained by paper decline, partly offset by ceramics and renovation‑driven paint. Triple superphosphate is shrinking. European titanium dioxide capacity is idling. Knowing where not to send an application engineer is worth as much as knowing where to send one, and it is the half of the answer that market reports rarely give.

What this study could not settle

Every figure in the report carries the conditions it was built under, on the chart rather than in an appendix. Collected in one place, these are the things a reader should hold against the numbers.

Why publish the limits. A study that presents sixteen markets without stating what its numbers rest on is asking to be believed rather than checked. The client’s process experts checked ours, in five workshops, which is the only reason the figures survived contact with a board.

Exports stand in for production in several markets. Lithium, amino acid, manganese and active pharmaceutical ingredient volumes are built from trade statistics, because production is not published consistently. Exports are not production: India exports only about 35 per cent of the ingredients it makes. Where this substitution was made it is stated on the chart, and Belgium, Germany and the Netherlands were excluded from several series because transit inflates their export figures.

China is inside the Asia Pacific figure in the phosphates chapter, because country‑level data is not published at that level. The addressable line for phosphates is therefore an upper bound, not a served market.

The plant census is not a census. Every site table in the report carries the same note: these are the major sites for which quantified capacity data is available, and they are not exhaustive. The map totals are floors.

Three markets rest on a stated assumption rather than a measurement. Amino acid production is plant capacity multiplied by an assumed 0.8 utilisation. Modified starch capacity is proxied from total starch capacity, of which modified product is a variable share up to 40 per cent, and the site mapping is assumed to cover 80 per cent of the market. The calcium carbonate total assumes the site mapping captures about 70 per cent. These are all reasonable assumptions and they are all assumptions.

Every 2030 number is a scenario, not a forecast. Base, best and worst bands are given for each market with the mechanisms that would produce them. The base case is not more likely than the others, it is the one that carries the historical rate forward.

One filter type could not be located in the public record at all. Discussed above. Unresolved at handover, and carried into the customer conversations as an open question.

What the numbers rest on