# Silicon processing - Stage 1 (technology)

internal name `silicon-mk01` · tier 4 (pY science pack 2, [tier 4](https://factorio.kalzumeus.com/tier/4.md))
HTML page: https://factorio.kalzumeus.com/tech/silicon-mk01/

## Cost

450 units of (1 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 2 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 3 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 6 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md)), 90 s each.

## Requires (1)

- [pY science pack](https://factorio.kalzumeus.com/tech/py-science-pack-2.md)

## Leads to (1)

- [Semiconductor doping](https://factorio.kalzumeus.com/tech/semiconductor-doping.md)

## Unlocks (6 recipes)

### Electronic Grade Silicon (`eg-si`)

- 10 s · tier 4
- Ingredients: 50 × [Pure Trichlorosilane](https://factorio.kalzumeus.com/fluid/pure-trichlorosilane.md), 100 × [Hydrogen](https://factorio.kalzumeus.com/fluid/hydrogen.md)
- Results: 2 × [Electronic Grade Silicon](https://factorio.kalzumeus.com/item/eg-si.md), 100 × [Hydrogen chloride](https://factorio.kalzumeus.com/fluid/hydrogen-chloride.md)
- Made in: Advanced foundry MK 01, Advanced foundry MK 02, Advanced foundry MK 03, Advanced foundry MK 04
- Unlocked by: [Silicon processing - Stage 1](https://factorio.kalzumeus.com/tech/silicon-mk01.md)

### Pure Trichlorosilane (`pure-trichlorosilane`)

- 5 s · tier 4
- Ingredients: 50 × [Trichlorosilane](https://factorio.kalzumeus.com/fluid/trichlorosilane.md)
- Results: 50 × [Pure Trichlorosilane](https://factorio.kalzumeus.com/fluid/pure-trichlorosilane.md), 0.3 × [Iron ore](https://factorio.kalzumeus.com/item/iron-ore.md) (30% chance), 0.3 × [Aluminium ore](https://factorio.kalzumeus.com/item/ore-aluminium.md) (30% chance), 0.3 × [Copper ore](https://factorio.kalzumeus.com/item/copper-ore.md) (30% chance)
- Made in: Destructive distillation column MK 01, Destructive distillation column MK 02, Destructive distillation column MK 03, Destructive distillation column MK 04
- Unlocked by: [Silicon processing - Stage 1](https://factorio.kalzumeus.com/tech/silicon-mk01.md)

### Silica powder (`silica-powder`)

- 8 s · tier 4 · productivity modules allowed
- Ingredients: 1 × [Sodium silicate](https://factorio.kalzumeus.com/item/sodium-silicate.md)
- Results: 10 × [Silica powder](https://factorio.kalzumeus.com/item/silica-powder.md)
- Made in: Ball mill MK 01, Ball mill MK 02, Ball mill MK 03, Ball mill MK 04
- Unlocked by: [Silicon processing - Stage 1](https://factorio.kalzumeus.com/tech/silicon-mk01.md)

### Silicon (`silicon`)

- 5 s · tier 4 · productivity modules allowed
- Ingredients: 20 × [Pure sand](https://factorio.kalzumeus.com/item/pure-sand.md), 20 × [Coal dust](https://factorio.kalzumeus.com/item/coal-dust.md)
- Results: 10 × [Silicon](https://factorio.kalzumeus.com/item/silicon.md)
- Made in: High pressure furnace MK 01, High pressure furnace MK 02, High pressure furnace MK 03, High pressure furnace MK 04
- Unlocked by: [Silicon processing - Stage 1](https://factorio.kalzumeus.com/tech/silicon-mk01.md)

### Sodium silicate (`sodium-silicate`)

- 5 s · tier 4 · productivity modules allowed
- Ingredients: 20 × [Pure sand](https://factorio.kalzumeus.com/item/pure-sand.md), 150 × [Refined syngas](https://factorio.kalzumeus.com/fluid/refsyngas.md), 15 × [Sodium hydroxide](https://factorio.kalzumeus.com/item/sodium-hydroxide.md)
- Results: 1 × [Sodium silicate](https://factorio.kalzumeus.com/item/sodium-silicate.md)
- Made in: High pressure furnace MK 01, High pressure furnace MK 02, High pressure furnace MK 03, High pressure furnace MK 04
- Unlocked by: [Silicon processing - Stage 1](https://factorio.kalzumeus.com/tech/silicon-mk01.md)

### Trichlorosilane (`trichlorosilane`)

- 10 s · tier 4
- Ingredients: 5 × [Silicon](https://factorio.kalzumeus.com/item/silicon.md), 100 × [Hydrogen chloride](https://factorio.kalzumeus.com/fluid/hydrogen-chloride.md)
- Results: 50 × [Trichlorosilane](https://factorio.kalzumeus.com/fluid/trichlorosilane.md), 100 × [Hydrogen](https://factorio.kalzumeus.com/fluid/hydrogen.md)
- Made in: Fluidised bed reactor MK 01, Fluidised bed reactor MK 02, Fluidised bed reactor MK 03, Fluidised bed reactor MK 04
- Unlocked by: [Silicon processing - Stage 1](https://factorio.kalzumeus.com/tech/silicon-mk01.md)