# Iron processing - Stage 2 (technology) internal name `iron-mk02` · tier 2 (Logistic science pack, [tier 2](https://factorio.kalzumeus.com/tier/2.md)) HTML page: https://factorio.kalzumeus.com/tech/iron-mk02/ ## Cost 275 units of (1 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 2 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 3 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md)), 60 s each. ## Requires (2) - [Iron processing - Stage 1](https://factorio.kalzumeus.com/tech/iron-mk01.md) - [Niobium](https://factorio.kalzumeus.com/tech/niobium.md) ## Leads to (4) - [Advanced mining facilities](https://factorio.kalzumeus.com/tech/advanced-mining-facilities.md) - [Chromium processing - Stage 2](https://factorio.kalzumeus.com/tech/chromium-mk02.md) - [Molybdenum processing](https://factorio.kalzumeus.com/tech/molybdenum-processing.md) - [Water invertebrates - Stage 1](https://factorio.kalzumeus.com/tech/water-invertebrates-mk01.md) ## Unlocks (10 recipes) ### Iron pulp (stage 1) (`classify-iron-ore-dust`) - 2.5 s · tier 2 - Ingredients: 3 × [Iron ore dust](https://factorio.kalzumeus.com/item/iron-ore-dust.md), 300 × [Water](https://factorio.kalzumeus.com/fluid/water.md) - Results: 50 × [Iron pulp (stage 1)](https://factorio.kalzumeus.com/fluid/iron-pulp-01.md), 50 × [Iron slime](https://factorio.kalzumeus.com/fluid/iron-slime.md) - Made in: Hydroclassifier MK 01, Hydroclassifier MK 02, Hydroclassifier MK 03, Hydroclassifier MK 04 - Unlocked by: [Iron processing - Stage 2](https://factorio.kalzumeus.com/tech/iron-mk02.md) ### Iron (grade 1) (`grade-2-crush`) - 1 s · tier 2 - Ingredients: 1 × [Iron (grade 2)](https://factorio.kalzumeus.com/item/grade-2-iron.md) - Results: 0.5 × [Gravel](https://factorio.kalzumeus.com/item/gravel.md) (50% chance), 1 × [Iron (grade 1)](https://factorio.kalzumeus.com/item/grade-1-iron.md) - Made in: Impact crusher MK 01, Impact crusher MK 02, Impact crusher MK 03, Impact crusher MK 04 - Unlocked by: [Iron processing - Stage 2](https://factorio.kalzumeus.com/tech/iron-mk02.md) ### Iron (grade 1) (`grade-2-iron`) - 3 s · tier 2 - Ingredients: 5 × [Processed iron ore](https://factorio.kalzumeus.com/item/processed-iron-ore.md) - Results: 1 × [Iron (grade 1)](https://factorio.kalzumeus.com/item/grade-1-iron.md), 0.5 × [Iron (grade 2)](https://factorio.kalzumeus.com/item/grade-2-iron.md) (50% chance), 0.5 × [Iron (grade 3)](https://factorio.kalzumeus.com/item/grade-3-iron.md) (50% chance) - Made in: Automated screener MK 01, Automated screener MK 02, Automated screener MK 03, Automated screener MK 04 - Unlocked by: [Iron processing - Stage 2](https://factorio.kalzumeus.com/tech/iron-mk02.md) ### Iron (grade 2) (`grade-3-iron-processing`) - 3 s · tier 2 - Ingredients: 1 × [Iron (grade 3)](https://factorio.kalzumeus.com/item/grade-3-iron.md) - Results: 1 × [Iron (grade 2)](https://factorio.kalzumeus.com/item/grade-2-iron.md) - Made in: Secondary crusher MK 01, Secondary crusher MK 02, Secondary crusher MK 03, Secondary crusher MK 04 - Unlocked by: [Iron processing - Stage 2](https://factorio.kalzumeus.com/tech/iron-mk02.md) ### Hydrocyclone MK 01 (`hydrocyclone-mk01`) - 1 s · tier 2 - Ingredients: 30 × [Niobium pipe](https://factorio.kalzumeus.com/item/niobium-pipe.md), 2 × [Steam engine](https://factorio.kalzumeus.com/item/steam-engine.md), 30 × [Iron plate](https://factorio.kalzumeus.com/item/iron-plate.md), 30 × [Steel plate](https://factorio.kalzumeus.com/item/steel-plate.md), 30 × [Small parts](https://factorio.kalzumeus.com/item/small-parts-01.md), 10 × [Intermetallics](https://factorio.kalzumeus.com/item/intermetallics.md) - Results: 1 × [Hydrocyclone MK 01](https://factorio.kalzumeus.com/item/hydrocyclone-mk01.md) - Made in: Burner assembling machine MK 01, Burner assembling machine MK 02, Burner assembling machine MK 03, Automated factory MK 01, Automated factory MK 02, Automated factory MK 03, Automated factory MK 04, Character, Character (flying), Mutagenic infusion, (flying) - Unlocked by: [Iron processing - Stage 2](https://factorio.kalzumeus.com/tech/iron-mk02.md) ### Iron ore dust (`iron-ore-dust`) - 2 s · tier 2 - Ingredients: 1 × [Iron (grade 1)](https://factorio.kalzumeus.com/item/grade-1-iron.md) - Results: 1 × [Iron ore dust](https://factorio.kalzumeus.com/item/iron-ore-dust.md) - Made in: Ball mill MK 01, Ball mill MK 02, Ball mill MK 03, Ball mill MK 04 - Unlocked by: [Iron processing - Stage 2](https://factorio.kalzumeus.com/tech/iron-mk02.md) ### Iron slime (`iron-slime`) - 3 s · tier 2 - Ingredients: 140 × [Iron oxide](https://factorio.kalzumeus.com/item/iron-oxide.md), 300 × [Tailings](https://factorio.kalzumeus.com/fluid/tailings.md) - Results: 50 × [Iron slime](https://factorio.kalzumeus.com/fluid/iron-slime.md) - Made in: Mixer MK 01, Mixer MK 02, Mixer MK 03, Mixer MK 04 - Unlocked by: [Iron processing - Stage 2](https://factorio.kalzumeus.com/tech/iron-mk02.md) ### Molten iron (`molten-iron-06`) - 4 s · tier 2 - Ingredients: 1 × [Unslimed iron](https://factorio.kalzumeus.com/item/unslimed-iron.md), 3 × [Borax](https://factorio.kalzumeus.com/item/borax.md), 60 × [Oxygen](https://factorio.kalzumeus.com/fluid/oxygen.md) - Results: 40 × [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 2](https://factorio.kalzumeus.com/tech/iron-mk02.md) ### Unslimed iron (`unslimed-iron`) - 3 s · tier 2 - Ingredients: 100 × [Iron slime](https://factorio.kalzumeus.com/fluid/iron-slime.md), 200 × [Water](https://factorio.kalzumeus.com/fluid/water.md) - Results: 100 × [Tailings](https://factorio.kalzumeus.com/fluid/tailings.md), 1 × [Unslimed iron](https://factorio.kalzumeus.com/item/unslimed-iron.md) - Made in: Hydroclassifier MK 01, Hydroclassifier MK 02, Hydroclassifier MK 03, Hydroclassifier MK 04 - Unlocked by: [Iron processing - Stage 2](https://factorio.kalzumeus.com/tech/iron-mk02.md) ### Unslimed iron (`unslimed-iron-2`) - 3 s · tier 2 - Ingredients: 300 × [Iron pulp (stage 1)](https://factorio.kalzumeus.com/fluid/iron-pulp-01.md), 200 × [Water](https://factorio.kalzumeus.com/fluid/water.md) - Results: 100 × [Tailings](https://factorio.kalzumeus.com/fluid/tailings.md), 1 × [Unslimed iron](https://factorio.kalzumeus.com/item/unslimed-iron.md) - Made in: Hydrocyclone MK 01, Hydrocyclone MK 02, Hydrocyclone MK 03, Hydrocyclone MK 04 - Unlocked by: [Iron processing - Stage 2](https://factorio.kalzumeus.com/tech/iron-mk02.md)