Who this is for
Feed producers, poultry and livestock integrators, aquafeed entrepreneurs, and agro-processors considering a feed pelletising line in SADC or wider Africa. Also useful for development-finance teams assessing feed-mill feasibility.
The line is a train, not a machine
Buyers often think of a "pellet mill" as the project. It isn't. A feed line is a process train, and pellet quality and uptime depend on every stage being matched:
- Intake and cleaning — receiving raw materials, removing foreign material and metal.
- Grinding — hammer mill (or roller mill) reducing particle size for the species and pellet spec.
- Dosing and mixing — batch or continuous weighing and mixing to the formulation, including micro-ingredients and liquids.
- Conditioning — steam conditioning to gelatinise starch and soften the mash before pelleting (the single biggest determinant of pellet durability).
- Pelleting — the pellet mill (ring die or flat die) pressing mash through a die.
- Cooling — counterflow cooler removing heat and moisture so pellets are stable and storable.
- Crumbling / sieving — for poultry crumbles and to remove fines.
- Bagging or bulk load-out — packaging and dispatch.
A strong pellet mill bolted onto weak conditioning or an undersized cooler produces poor, dusty pellets at low throughput. Match the train.
Decision rule: never buy the pellet mill in isolation. Size grinding, mixing, conditioning, and cooling to the same throughput, and treat conditioning and cooling as quality-critical, not as accessories.
The three real tiers
Small line — 1–3 t/h
What it is: a compact line, often flat-die or small ring-die mill, simple batch mixer, basic conditioning, modest cooler. Frequently semi-manual intake and bagging.
Capex band, 2026: USD 60 000–150 000 landed-and-commissioned, depending on automation and cooling/conditioning quality.
When it is right: on-farm feed production, a poultry or livestock integrator making feed for its own use, or a startup commercial producer in a local catchment. Below ~3 t/h, capital-light makes sense.
Where it disappoints: pellet durability and consistency if conditioning is skimped. Labour intensity at the intake and bagging ends.
Mid-scale line — 3–10 t/h
What it is: a ring-die pellet mill with proper steam conditioning, automated batch dosing and mixing, a counterflow cooler, crumbler, and sieving, with semi-automated bagging or bulk load-out.
Capex band, 2026: USD 250 000–900 000 for the line scope, plus silos, civils, steam boiler, and utilities.
When it is right: most commercial SADC feed producers. Good balance of throughput, pellet quality, and capital. Suits a regional poultry/livestock feed brand with steady off-take.
Where it disappoints: if formulation flexibility (many species, frequent recipe changes) outgrows the dosing and mixing automation, changeovers slow you down.
Industrial line — 10–30+ t/h
What it is: a full automated feed mill — multiple grinding lines, automated multi-bin dosing with micro-ingredient systems, large mixers, high-capacity conditioning and pelleting, large counterflow coolers, automated bagging and bulk load-out, and plant-wide control.
Capex band, 2026: USD 1.5–4 million+ for the plant scope, plus silos, intake, civils, boiler, and utilities — which can add substantially.
When it is right: large integrators, contract feed manufacturers, and producers with proven high-volume off-take across multiple species. Lowest cost per tonne at high utilisation.
Where it disappoints: at low utilisation, like any large plant, it is the most expensive option you can own.
Side-by-side comparison
| Dimension | Small 1–3 t/h | Mid 3–10 t/h | Industrial 10–30+ t/h |
|---|---|---|---|
| Capex band (line) | USD 60–150 k | USD 250–900 k | USD 1.5–4 m+ |
| Pellet mill type | Flat / small ring die | Ring die | Ring die (multiple) |
| Conditioning | Basic | Single/double steam conditioner | Multi-stage / long-term conditioning |
| Dosing / mixing | Manual / simple batch | Automated batch + micro | Full automated multi-bin + micro |
| Cooling | Small counterflow | Counterflow | High-capacity counterflow |
| Power demand (indicative) | ~50–120 kW | ~150–400 kW | ~600–1 500 kW |
| Steam requirement | Small boiler | Medium boiler | Large boiler |
| Best supported by | On-farm / local catchment | Regional feed brand | Large integrator / contract mill |
Feed type changes everything
"Feed" is not one product. The species and pellet spec drive the die, the conditioning, and the cooling:
- Poultry — crumbles and small pellets; needs a crumbler and good fines removal; durability matters for feeder performance.
- Layer / broiler mash-to-pellet — formulation-sensitive; conditioning quality drives durability.
- Cattle / ruminant — larger pellets, often higher fibre; different die and conditioning.
- Pig feed — its own pellet specs and hygiene considerations.
- Aquafeed — a different process class entirely (often extrusion, not pelleting, for floating/sinking feed). If aquafeed is in scope, that is an extrusion-line conversation, not a pellet-mill one.
Decide your species mix and pellet specs first; the line follows.
The constraints that should reshape the tier choice
1. Realistic off-take and species mix
Honest tonnes-per-month per species, year 1 / 2 / 3. A mill sized for ambition runs at low utilisation and burns its payback. Size for year-three reality with an expansion path.
2. Raw-material supply and variability
Maize, soya, fishmeal, brans, and micro-ingredients — supply consistency and quality vary by season and region. Intake, storage buffer, and grinding need to handle the worst-quarter reality, not the average. Imported ingredient lead times affect the storage you need.
3. Steam and boiler capacity
Conditioning needs reliable steam. The boiler is core scope, not an afterthought, and its sizing tracks the conditioning capacity. Under-specified steam is a common cause of poor pellet durability.
4. Location and service distance
Like any agro plant outside a major hub, a feed mill needs a spares buffer and remote-support capability sized to its response distance. See Spare-parts strategy for an imported Chinese line and our maize milling case study — the same logic applies.
5. Utility stability
Pellet mills draw heavy motor load; the main motor is a large single load that stresses an unstable grid on start. Surge protection, soft-start, and a clean-restart strategy matter.
Failure mode: a strong pellet mill let down by weak conditioning, an undersized cooler, or an under-specified boiler. The mill makes hot, soft, dusty pellets at reduced throughput, and the line never reaches its rated tonnes-per-hour.
The die is a consumable — plan for it
Pellet-mill dies and rolls wear and are a recurring operating cost. Different feed specs need different die hole sizes, so a multi-species producer needs multiple dies. Budget the die set for your species range and a wear-replacement buffer — a worn die quietly cuts throughput and pellet quality before it fails outright.
What gets under-budgeted on feed lines
- Conditioning capacity — the quality determinant most often skimped.
- Cooler sizing — undersized coolers leave warm, moist pellets that degrade in storage.
- Steam / boiler — core scope; sized to conditioning.
- Raw-material storage and intake — silos, bins, and a realistic buffer.
- Micro-ingredient / liquid addition — accuracy here drives feed performance and compliance.
- Die sets and wear buffer — recurring cost across the species range.
- Dust control and safety — feed dust is an explosion and health risk; extraction and safety scope are essential.
How to validate sizing before you buy
- Define species mix and pellet specs.
- Build an honest off-take model per species, year 1 / 2 / 3.
- Assess raw-material supply, grid, water, and steam reality.
- Pick the smallest tier that meets year-three demand at 70–80% utilisation, with an expansion path.
- Match the whole train — grinding, mixing, conditioning, pelleting, cooling — to the chosen throughput.
- Cost per tonne — compare on delivered cost per tonne of finished feed including energy, labour, dies, and finance.
What CISH does in this part of the process
For feed and agro-processing projects, our feasibility stage matches the whole train to realistic off-take and the raw-material reality, sizes the boiler and utilities, plans the spares strategy, and structures the sourcing split. See Agricultural processing production lines, our maize milling case study, and Sizing a maize mill for the same approach applied to grain.
Frequently asked questions
How many tonnes per hour do I actually need?
Work backwards from monthly demand per species at a realistic shift pattern, then add margin. Pick the smallest tier that covers year-three demand at 70–80% utilisation. Oversizing on tonnes-per-hour is the most common feed-mill mistake.
Why does conditioning matter so much?
Steam conditioning gelatinises starch and softens the mash, which is what lets the pellet mill produce durable, low-dust pellets at rated throughput. Skimp on conditioning and you get poor pellets at reduced output, regardless of how good the mill is.
Can one line make poultry, cattle, and pig feed?
Often yes, by changing dies and adjusting conditioning and formulation — but each species needs its own die and recipe discipline. Budget the die set for your full species range, and ensure dosing/mixing handles your changeover frequency.
Is aquafeed the same as a pellet line?
No. Floating/sinking aquafeed is usually made by extrusion, a different process class with different equipment and cost. If aquafeed is in scope, treat it as a separate extrusion-line decision.
What is the biggest hidden operating cost?
Dies and rolls (a recurring consumable that quietly cuts throughput as they wear) and energy (the pellet mill is a heavy motor load). Budget die replacement and consider energy-efficient drives and a clean-restart strategy for unstable grids.