Flodin process

Image of the patent of the furnace

The Flodin process is a direct reduction process for manufacturing iron, developed by Gustaf Henning Flodin from Sweden and patented in 1924.

Using a specially constructed electric arc furnace, a mixture of hematite and coal is smelted in a continuous process, with the reduced metal accumulating at the bottom of the furnace, where it can be tapped off.

External links

Popular Science January 1926 p.55
US Patent US1691272 - Method of producing metals and metal alloys low in carbon - Filed March 18, 1924 by Gustav Henning Flodin

Iron and steel production

Iron production
(Ironworks)

Smelting	Bloomery (produces sponge iron) Blast furnace (Cold blast • Hot blast • Anthracite iron) (produces pig iron) Direct reduced iron
Secondary	Wrought iron (via Finery forge or Reverberatory Puddling Furnace) Cast iron (via Cupola furnace or Induction furnace)

Steelmaking
(Steel mill)

Primary (Pre-1850)	Pattern welding (Damascus steel) Crucible steel Tatara furnace Cementation process
Primary (Post-1850)	Bessemer process Open hearth furnace Electric arc furnace Basic oxygen process
Secondary	Electro-slag remelting Vacuum arc remelting Argon oxygen decarburization

Production by country

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