# Gold processing (technology) internal name `gold` · tier 5 (Chemical science pack, [tier 5](https://factorio.kalzumeus.com/tier/5.md)) HTML page: https://factorio.kalzumeus.com/tech/gold/ ## Cost 900 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 (1) - [Chromium processing - Stage 3](https://factorio.kalzumeus.com/tech/chromium-mk03.md) ## Leads to (2) - [Medium scale integrated circuits](https://factorio.kalzumeus.com/tech/integrated-circuits-2.md) - [Intermetallics - Stage 3](https://factorio.kalzumeus.com/tech/intermetallics-mk03.md) ## Unlocks (12 recipes) ### Chromite concentrate (`chromite-concentrate`) - 10 s · tier 5 - Ingredients: 50 × [Chromite fines](https://factorio.kalzumeus.com/fluid/chromite-fines.md), 100 × [Sulfuric acid](https://factorio.kalzumeus.com/fluid/sulfuric-acid.md) - Results: 100 × [Chromite concentrate](https://factorio.kalzumeus.com/fluid/chromite-concentrate.md) - Made in: Centrifuge, Centrifuge MK 01, Centrifuge MK 02, Centrifuge MK 03, Centrifuge MK 04 - Unlocked by: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md) ### Chromite fines (`chromite-fines`) - 5 s · tier 5 - Ingredients: 100 × [Chromite mix](https://factorio.kalzumeus.com/fluid/chromite-mix.md), 15 × [Gravel](https://factorio.kalzumeus.com/item/gravel.md) - Results: 50 × [Chromite fines](https://factorio.kalzumeus.com/fluid/chromite-fines.md) - Made in: Scrubber MK 01, Scrubber MK 02, Scrubber MK 03, Scrubber MK 04 - Unlocked by: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md) ### Chromite mix (`chromite-mix`) - 5 s · tier 5 - Ingredients: 100 × [Chromite solution](https://factorio.kalzumeus.com/fluid/chromite-solution.md), 100 × [Hydrogen peroxide](https://factorio.kalzumeus.com/fluid/hydrogen-peroxide.md) - Results: 50 × [Chromite mix](https://factorio.kalzumeus.com/fluid/chromite-mix.md) - Made in: Mixer MK 01, Mixer MK 02, Mixer MK 03, Mixer MK 04 - Unlocked by: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md) ### Chromium rejects (`chromium-rejects`) - 5 s · tier 5 - Ingredients: 100 × [Prepared chromium](https://factorio.kalzumeus.com/fluid/prepared-chromium.md) - Results: 50 × [Chromium rejects](https://factorio.kalzumeus.com/fluid/chromium-rejects.md), 10 × [Chromium](https://factorio.kalzumeus.com/item/chromium.md) - Made in: Centrifuge, Centrifuge MK 01, Centrifuge MK 02, Centrifuge MK 03, Centrifuge MK 04 - Unlocked by: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md) ### Gold concentrate (`gold-concentrate`) - 2 s · tier 5 - Ingredients: 100 × [Cyanic acid](https://factorio.kalzumeus.com/fluid/cyanic-acid.md), 5 × [Gold precipitate (type 1)](https://factorio.kalzumeus.com/item/gold-precipitate.md) - Results: 1 × [Gold concentrate](https://factorio.kalzumeus.com/item/gold-concentrate.md) - Made in: Leaching station MK 01, Leaching station MK 02, Leaching station MK 03, Leaching station MK 04 - Unlocked by: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md) ### Gold plate (`gold-plate`) - 3 s · tier 5 - Ingredients: 200 × [Oxygen](https://factorio.kalzumeus.com/fluid/oxygen.md), 1 × [Purified gold](https://factorio.kalzumeus.com/item/purified-gold.md) - Results: 4 × [Gold plate](https://factorio.kalzumeus.com/item/gold-plate.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: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md) ### Gold precipitate (type 1) (`gold-precipitate`) - 10 s · tier 5 - Ingredients: 50 × [Chromium rejects](https://factorio.kalzumeus.com/fluid/chromium-rejects.md), 100 × [Water](https://factorio.kalzumeus.com/fluid/water.md) - Results: 5 × [Gold precipitate (type 1)](https://factorio.kalzumeus.com/item/gold-precipitate.md) - Made in: Centrifuge, Centrifuge MK 01, Centrifuge MK 02, Centrifuge MK 03, Centrifuge MK 04 - Unlocked by: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md) ### Gold precipitate (type 2) (`gold-precipitate-2`) - 3.5 s · tier 5 - Ingredients: 150 × [Sulfuric acid](https://factorio.kalzumeus.com/fluid/sulfuric-acid.md), 1 × [Gold concentrate](https://factorio.kalzumeus.com/item/gold-concentrate.md), 2 × [Sodium bisulfate](https://factorio.kalzumeus.com/item/sodium-bisulfate.md) - Results: 1 × [Gold precipitate (type 2)](https://factorio.kalzumeus.com/item/gold-precipitate-2.md) - Made in: Wet scrubber MK 01, Wet scrubber MK 02, Wet scrubber MK 03, Wet scrubber MK 04 - Unlocked by: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md) ### Gold solution (`gold-solution`) - 3 s · tier 5 - Ingredients: 1 × [Gold precipitate (type 2)](https://factorio.kalzumeus.com/item/gold-precipitate-2.md), 10 × [Coal dust](https://factorio.kalzumeus.com/item/coal-dust.md), 200 × [Ammonia](https://factorio.kalzumeus.com/fluid/ammonia.md) - Results: 100 × [Gold solution](https://factorio.kalzumeus.com/fluid/gold-solution.md) - Made in: Wet scrubber MK 01, Wet scrubber MK 02, Wet scrubber MK 03, Wet scrubber MK 04 - Unlocked by: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md) ### Gold plate (`hotair-gold-plate`) - 3 s · tier 5 - Ingredients: 200 × [Oxygen](https://factorio.kalzumeus.com/fluid/oxygen.md), 1 × [Purified gold](https://factorio.kalzumeus.com/item/purified-gold.md), 50 × [Hot air](https://factorio.kalzumeus.com/fluid/hot-air.md) - Results: 5 × [Gold plate](https://factorio.kalzumeus.com/item/gold-plate.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: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md) ### Prepared chromium (`prepared-chromium`) - 3 s · tier 5 - Ingredients: 100 × [Chromite concentrate](https://factorio.kalzumeus.com/fluid/chromite-concentrate.md), 200 × [Chlorine](https://factorio.kalzumeus.com/fluid/chlorine.md) - Results: 50 × [Prepared chromium](https://factorio.kalzumeus.com/fluid/prepared-chromium.md) - Made in: Wet scrubber MK 01, Wet scrubber MK 02, Wet scrubber MK 03, Wet scrubber MK 04 - Unlocked by: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md) ### Purified gold (`purified-gold`) - 3 s · tier 5 - Ingredients: 100 × [Gold solution](https://factorio.kalzumeus.com/fluid/gold-solution.md), 2 × [Iron oxide](https://factorio.kalzumeus.com/item/iron-oxide.md), 4 × [Nichrome](https://factorio.kalzumeus.com/item/nichrome.md), 3 × [Graphite](https://factorio.kalzumeus.com/item/graphite.md) - Results: 5 × [Purified gold](https://factorio.kalzumeus.com/item/purified-gold.md) - Made in: Electrolyzer MK 01, Electrolyzer MK 02, Electrolyzer MK 03, Electrolyzer MK 04 - Unlocked by: [Gold processing](https://factorio.kalzumeus.com/tech/gold.md)