# Iron processing - Stage 3 (technology) internal name `iron-mk03` · tier 5 (Chemical science pack, [tier 5](https://factorio.kalzumeus.com/tier/5.md)) HTML page: https://factorio.kalzumeus.com/tech/iron-mk03/ ## Cost 800 units of (1 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 2 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 3 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 6 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 10 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md)), 120 s each. ## Requires (2) - [Additives](https://factorio.kalzumeus.com/tech/additives.md) - [Titanium processing - Stage 2](https://factorio.kalzumeus.com/tech/titanium-mk02.md) ## Leads to (1) - [Iron processing - Stage 4](https://factorio.kalzumeus.com/tech/iron-mk04.md) ## Unlocks (11 recipes) ### High grade iron (`high-grade-iron`) - 10 s · tier 5 - Ingredients: 450 × [Iron pulp (stage 7)](https://factorio.kalzumeus.com/fluid/iron-pulp-07.md), 1 × [Filtration media](https://factorio.kalzumeus.com/item/filtration-media.md) - Results: 7 × [High grade iron](https://factorio.kalzumeus.com/item/high-grade-iron.md) - Made in: Filter MK 01, Filter MK 02, Filter MK 03, Filter MK 04 - Unlocked by: [Iron processing - Stage 3](https://factorio.kalzumeus.com/tech/iron-mk03.md) ### Iron concentrate (`iron-concentrate`) - 3 s · tier 5 - Ingredients: 100 × [Iron pulp (stage 1)](https://factorio.kalzumeus.com/fluid/iron-pulp-01.md), 100 × [Water](https://factorio.kalzumeus.com/fluid/water.md) - Results: 1 × [Iron concentrate](https://factorio.kalzumeus.com/item/iron-concentrate.md), 100 × [Tailings](https://factorio.kalzumeus.com/fluid/tailings.md), 50 × [Coal water slurry](https://factorio.kalzumeus.com/fluid/coal-slurry.md) - Made in: Jig concentrator MK 01, Jig concentrator MK 02, Jig concentrator MK 03, Jig concentrator MK 04 - Unlocked by: [Iron processing - Stage 3](https://factorio.kalzumeus.com/tech/iron-mk03.md) ### Fine iron concentrate (`iron-ore-dust-2`) - 3 s · tier 5 - Ingredients: 1 × [Iron concentrate](https://factorio.kalzumeus.com/item/iron-concentrate.md) - Results: 0.3 × [Iron ore dust](https://factorio.kalzumeus.com/item/iron-ore-dust.md) (30% chance), 0.5 × [Fine iron concentrate](https://factorio.kalzumeus.com/item/iron-dust-concentrate.md) (50% chance) - Made in: Ball mill MK 01, Ball mill MK 02, Ball mill MK 03, Ball mill MK 04 - Unlocked by: [Iron processing - Stage 3](https://factorio.kalzumeus.com/tech/iron-mk03.md) ### Iron pulp (stage 2) (`iron-pulp-02`) - 3 s · tier 5 - Ingredients: 4 × [Unslimed iron](https://factorio.kalzumeus.com/item/unslimed-iron.md), 50 × [Petroleum sulfonates](https://factorio.kalzumeus.com/fluid/petroleum-sulfonates.md), 50 × [Oleochemicals](https://factorio.kalzumeus.com/fluid/oleochemicals.md) - Results: 400 × [Iron pulp (stage 2)](https://factorio.kalzumeus.com/fluid/iron-pulp-02.md) - Made in: Centrifugal pan MK 01, Centrifugal pan MK 02, Centrifugal pan MK 03, Centrifugal pan MK 04 - Unlocked by: [Iron processing - Stage 3](https://factorio.kalzumeus.com/tech/iron-mk03.md) ### Iron pulp (stage 3) (`iron-pulp-03`) - 3 s · tier 5 - Ingredients: 100 × [Iron pulp (stage 2)](https://factorio.kalzumeus.com/fluid/iron-pulp-02.md), 50 × [Xylenol](https://factorio.kalzumeus.com/fluid/xylenol.md) - Results: 50 × [Iron pulp (stage 3)](https://factorio.kalzumeus.com/fluid/iron-pulp-03.md) - Made in: Leaching station MK 01, Leaching station MK 02, Leaching station MK 03, Leaching station MK 04 - Unlocked by: [Iron processing - Stage 3](https://factorio.kalzumeus.com/tech/iron-mk03.md) ### Iron pulp (stage 4) (`iron-pulp-04`) - 3 s · tier 5 - Ingredients: 500 × [Iron pulp (stage 3)](https://factorio.kalzumeus.com/fluid/iron-pulp-03.md), 50 × [Organic solvent](https://factorio.kalzumeus.com/fluid/organic-solvent.md), 150 × [Pressurized air](https://factorio.kalzumeus.com/fluid/pressured-air.md) - Results: 500 × [Iron pulp (stage 4)](https://factorio.kalzumeus.com/fluid/iron-pulp-04.md) - Made in: Flotation cell MK 01, Flotation cell MK 02, Flotation cell MK 03, Flotation cell MK 04 - Unlocked by: [Iron processing - Stage 3](https://factorio.kalzumeus.com/tech/iron-mk03.md) ### Iron pulp (stage 5) (`iron-pulp-05`) - 3 s · tier 5 - Ingredients: 100 × [Iron pulp (stage 4)](https://factorio.kalzumeus.com/fluid/iron-pulp-04.md), 300 × [Water](https://factorio.kalzumeus.com/fluid/water.md), 150 × [Pressurized air](https://factorio.kalzumeus.com/fluid/pressured-air.md) - Results: 100 × [Iron pulp (stage 5)](https://factorio.kalzumeus.com/fluid/iron-pulp-05.md) - Made in: Flotation cell MK 01, Flotation cell MK 02, Flotation cell MK 03, Flotation cell MK 04 - Unlocked by: [Iron processing - Stage 3](https://factorio.kalzumeus.com/tech/iron-mk03.md) ### Iron pulp (stage 6) (`iron-pulp-06`) - 3 s · tier 5 - Ingredients: 100 × [Iron pulp (stage 5)](https://factorio.kalzumeus.com/fluid/iron-pulp-05.md), 50 × [Sulfuric acid](https://factorio.kalzumeus.com/fluid/sulfuric-acid.md), 150 × [Pressurized air](https://factorio.kalzumeus.com/fluid/pressured-air.md) - Results: 100 × [Iron pulp (stage 6)](https://factorio.kalzumeus.com/fluid/iron-pulp-06.md), 100 × [Tailings](https://factorio.kalzumeus.com/fluid/tailings.md), 50 × [Iron pulp (stage 2)](https://factorio.kalzumeus.com/fluid/iron-pulp-02.md) - Made in: Flotation cell MK 01, Flotation cell MK 02, Flotation cell MK 03, Flotation cell MK 04 - Unlocked by: [Iron processing - Stage 3](https://factorio.kalzumeus.com/tech/iron-mk03.md) ### Iron pulp (stage 7) (`iron-pulp-06-thickener`) - 3 s · tier 5 - Ingredients: 100 × [Iron pulp (stage 6)](https://factorio.kalzumeus.com/fluid/iron-pulp-06.md) - Results: 50 × [Tailings](https://factorio.kalzumeus.com/fluid/tailings.md), 50 × [Iron pulp (stage 7)](https://factorio.kalzumeus.com/fluid/iron-pulp-07.md) - Made in: Thickener MK 01, Thickener MK 02, Thickener MK 03, Thickener MK 04 - Unlocked by: [Iron processing - Stage 3](https://factorio.kalzumeus.com/tech/iron-mk03.md) ### Iron pulp (stage 7) (`iron-pulp-07`) - 2.5 s · tier 5 - Ingredients: 3 × [Fine iron concentrate](https://factorio.kalzumeus.com/item/iron-dust-concentrate.md), 100 × [Armac 12-D](https://factorio.kalzumeus.com/fluid/armac-12.md) - Results: 100 × [Iron pulp (stage 7)](https://factorio.kalzumeus.com/fluid/iron-pulp-07.md) - Made in: Flotation cell MK 01, Flotation cell MK 02, Flotation cell MK 03, Flotation cell MK 04 - Unlocked by: [Iron processing - Stage 3](https://factorio.kalzumeus.com/tech/iron-mk03.md) ### Molten iron (`molten-iron-03`) - 4 s · tier 5 - Ingredients: 1 × [High grade iron](https://factorio.kalzumeus.com/item/high-grade-iron.md), 3 × [Borax](https://factorio.kalzumeus.com/item/borax.md), 60 × [Oxygen](https://factorio.kalzumeus.com/fluid/oxygen.md) - Results: 150 × [Molten iron](https://factorio.kalzumeus.com/fluid/molten-iron.md) - Made in: Basic oxygen furnace MK 01, Basic oxygen furnace MK 02, Basic oxygen furnace MK 03, Basic oxygen furnace MK 04 - Unlocked by: [Iron processing - Stage 3](https://factorio.kalzumeus.com/tech/iron-mk03.md)