🛠️ Invention or technique

Coke smelting of iron

Fundición de hierro con coque

Date
1709 · confidence high
Place
Coalbrookdale, Shropshire, England
Credited to
Abraham Darby I
People
👤 Abraham Darby I1678–1717
Field
Matter & energy

What it is

The use of coke (distilled mineral coal) instead of charcoal in the blast furnace, freeing ironmaking from the limits of the forests. It allowed cheap, high-volume cast iron.

The process took decades to spread widely, owing to issues of coke quality and sulphur content.

What it led to

  • Cheap iron for steam engines, bridges and railways
  • Industrial concentration in the coalfields
  • The industrial revolution in ironmaking
  • The Coalbrookdale iron bridge (1779)
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