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Iron Smelter

Raw Material ProductionTier III

The Iron Smelter is a tier-3 production building with a 3×3×3 footprint that runs 2 recipes (Iron Ingot and Sulfur). It draws 9 heat per second while running. Building one costs 15 Stone. It is unlocked by the Iron Smelter research at Tier III.

“It consumes iron ore to smelt iron ingots and can only be built on a furnace and has a conveyor belt output.”— in-game description
Speed multiplier
×1
Heat per second while running
9/s
Size in grid cells
3×3×3
Belt and pipe ports, in/out
1/1 belt
Recipes
2
Unlocked at Alchemy Level
Level III

Recipes the Iron Smelter runs

2 recipes
RecipeInputs per batchOutputTimeHeat
Iron IngotInputs1 Iron OreOutput10/minTime10 minHeat9/s
SulfurInputs1 Pyrite OreOutput2.5/minTime16 minHeat9/s

Output is the main product per minute for one Iron Smelter, without research upgrades.

Build cost

Details

Speed multiplier
×1
Heat per second while running
9/s
Size in grid cells
3×3×3
Belt and pipe ports, in/out
1/1 belt
Recipes
2
Unlocked at Alchemy Level
Level III
Mirrored variant
No

Unlocked by

  • ResearchIron SmelterCosts 570c · 90 research pointsTier III

Change history

  1. v0.2.0.2556Patch note28 Jul 2025
    • “Added a conveyor input to the Iron Smelter.”

Patch-note lines are quoted from the official notes. Exact data changes are tracked from v1.0.4962.

Generated from the v1.0.4962 game files. Rates assume base machine speed without research upgrades.

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